The tolerance zone for shaft keyway width b with normal fit is ISO N9 and with close fit ISO P9. 3mm 2. This specification includes index tolerances for multiple keyways. Abrading & Polishing;. Duy Nam. To confirm the status of any standard, identify the replacement standard if it is obsolete and/or purchase the standard please use. 093 / . 095 . In manufacturing upon 6885 Information used with permission ot Martin 02007 Shatt Keyseats/Hub Keyways Standard Keyseats/Keyways Sra' IoW Square Keyways Metric: WxHKey W x T2 Keyway American Standard — Use individual keyway broaches in a variety of arbor hole sizes. 3) Keyway fillet radius to be specified by customer. O. Also known as sine keys. I. Keyway Width. Gear Products and Suppliers | Gear Knowledge Menu. Custom shaft sizes and key sizes. While a designer is free to specify any keyway they wish, straying from the standard option is likely to increase the cost, time, and complexity of the part. 22. ; Image credit: Carlisle Power Transmission. G&G Manufacturing Company 4432 McKinley Street P. com. Consent to Cookies & Data processing. Read more…. Bushings for smaller arbor holes are collared for easier handling. Design of Square Key and Keyway (Wood Ruff) Stress, Shear and Torque. Steel key stock is an economical choice with good strength. Thru. 000 +. The inch and metric dimensions. Standard Metric Bores And Keyways DATA SHEET DS103 REV. 094 0. Engineering Hardware Design Data. txt) or read online for free. 376 . Milling a keyway in a steel shaftKeyway shaft coupling hole service couplings modification additional motion control tapered parallel Shaft keyway keyedKeyway metric key iso dimensions standard keyways r773 pdf keys shaft bores hub depth diameter standards engineering width table angelica. 0010. We offer the most common American Standard and Metric Pull-Type Keyway Broaches, available either as Industry Standard 500 Series with threaded pull end or 600 Series with notched pull end. pdf. Technical InformationBrowse L Type Hubs with Keyway - Metric Bores in the The Timken Company catalog including Part Number,Description ,Bore Size,Coupling Size,Keyway Size (W x D),Length thru Bore,Outside Diameter,CADThis standard is incorporated in the American Boat and Yacht Council (A. 1045. 8mm 2. Also, as. The sizes and tolerances contained in this Standard are intended for single key applications only. We are fully equipped to supply special Pull Type Keyway Broaches to your. Cylindrical and 1/10 conical shaft ends — Addendum 1: Checking of the depth of keyways in conical shaft ends. KeyWay /Key Dimensions. Recommendations for key size, length and keyway depth as a function of shaft diameter are provided in ASME Standards B17. 0mm to 26. 0mm Metric - Standard Sizes. The bore diameters listed in the "Keyway Additional Modification Applicable Bore List" in the table below are available for the service. As your Tooling Concierge, we use our expertise to. 0000 /-. Tough. 002, -. Keyway: One or more square-edged cutouts align with the. TruKey® Shafting from Keystone is designed to provide the straightest, most accurate keyed shafting, in the industry. BROWSE CATALOG. keyways /keys dimension in accordance with BS 4235-1:1972: Specification for. Machine keys are often the same material as the shaft. British Standard :BS 46 Part 1 : 1958 Keys and keyways and taper pins. 003, -. To confirm the status of any standard, identify the replacement standard if it is obsolete and/or purchase the standard please use. Product data for lock nuts requiring a keyway. Specification. Partially Keyed Rotary Shafts. Keyway Js9 Tolerance Chart 173 255 205 43. A. This standard presents metric dimensions, tolerances, sizes and fits for straight bores, tapered bores, keys and keyways for un-mounted industrial flexible couplings. 004, -. 437 / . 3/8 . The dimension from the top of the keyway to the opposite bore side, “T-dim”, is calculated from (refer to ANSI/AGMA 9002-B04) the following: T = bore + (h kw - Ch)Per BS 4235-1:1972: Specification for metric keys and keyways – Parallel and taper keys. KEYSTEEL HERKEY Hercus. Companion pulleys contain integral spokes which run radially on the pulley. Includes Tapping Drill Sizes for Thread Cutting Taps 17 Inches Tall x 11 Inches Wide when folded out. E. 8mm 2. Over To (Incl. 3. When installed, these keys fill oval keyways completely, reducing stress on the key and shaft. International Standard ISO 2491 was drawn up by Technical Committee lSO/TC 16, Keys and keyways, and circulated to the Member Bodies in August 1971. 010 / -. Standard Sprocket, Model 25B. Ultimate tensile strength 580MPa, Yield stress approx 300 MPa. 38 1958. 000 Standard Setscrew Locations If one setscrew is furnished the location. This SAE Standard specifies basic tolerances and dimensions for inboard propeller-shaft ends, propeller hubs and keyways for shaft sizes 3/4 in (19 mm) through 8 in (203 mm). Shaft (Arbor) Keyway Dimension Size Data - ANSI/ASME B94. Woodruff keys and keywaysTruKey® Shafting from Keystone is designed to provide the straightest, most accurate keyed shafting, in the industry. Keyway Cutter Hole Keyway Dimensional Data - ANSI/ASME B94. Choose from our selection of keyway stock, including machine key stock, rounded machine keys, and. Mechanical Tolerance Chart Data. Rectangular sunk key. 375 / . A description is not available for this item. Metric standard keyway sizes_联轴器厂家-guangzhou link automation140pcs assortment 30mm keys 16mm x20mm 10mm Sae to metric conversions for hex keys chart imageFwb lengths metric. Open navigation menuBritish Standard Metric Keyways for Square and Rectangular Parallel Keys 11 5/16 3/8 7/16 1/2 3/4 3/4 7/8 Nominal Diameter, d 6 1/2 7 1/2 9 Square Keys preferred for shaft diameters above this line: rectangular keys, below Key 3 3/4 4 1/2 5 1/2 Shaft Key Size Versus Shaft Diameter ANSI B17. 1 for Js9 Dimensions) Key & Keyway Dimensions – Millimeters Coupling Hub Keyway Dimensions – InchesThe calculations are based on the British standard Metric ISO Limits and Fits. 020 0. 304/316. dimensioned by its width and depth on the shaft keyway sides. Max. ) rules which are commonly used in Australia. 03 Bore Dia. 6 : 621. Design of Standard Metric Keyways for Square and Rectangular Parallel Keys. H is the key height. d Tolerance Class Shaft t1 Hub t2. The sunk keys are provided half in the keyway of the shaft and half in the keyway of the hub or boss of the pulley. Face Width Face width is limited in its maximum dimension to allow proper. Round keyed shafting: 1/2 dia. Keysteel Tolerances & Standards Keyway Standards – IMPERIAL Keyway Standards – METRIC Keysteel Merchandiser Engineer’s Chalk Ordering Information 1. Use individual keyway broaches in a variety of arbor hole sizes. 125. Balance the assembly by adding balancing clay to the workpiece. pdf. KEYS AND KEYWAYS. pdf), Text File (. Specification for metric keys and keyways – Parallel and taper keys BS 4235-1:1972; Matching the woodruff key to the shaft diameter is also specified in DIN 6888 American sprocket manufacturers have adopted 4 specific types of sprocket construction styles as American Standards . Straight Sided Spline Dimensions. Fast-Cutting Carbide Square EndMills for Stainless Steel and Titanium. 000 inches on width. Coping with foreign bore and keyway standards Machine Design. Table of contents. ISO 965-1 Calculator, Formula and Table Length of engagement of mating threads is selected to utilize full tensile strength of a bolt prior to shearing and nut threads. Undersized Machine Key Assortments Since they fit more loosely than standard keys, these undersized keys are best for uneven keyways or when you need to disassemble parts frequently, such as during maintenance or prototyping. All keyed Shafting is guaranteed to fit on a bearing, and the ends can be. Shape and dimensions of parallel key and keyway Shape and dimensions of taper key, headed taper key and keyway Excerpt from JIS B 1301:1996 S1 = b's tolerance× 1 2 S2 = h's tolerance× 1 2 h2 = h, f = h, e ≒ b S1 = b's tolerance× 1 2 S2 = h's tolerance× 1 2 Key body Cross section of keyway Key bodyHollow shaft with key - standard design Design and Operating Data 116 Gear Units – 2016 7. Each metric standard is product specific. Shaft Arbor and Keyseat Dimensional Data American National Standard Keys and Keyways. 25 - M 1. net. 99 #22. Our Pull-Type Keyway Broaches are ideal for applications in high volume production pull-type machines. To keep abreast of progress in industry, Australian Standards are subject to peri-odic review and are kept up–to–date by the issue of amendments or new editions as necessary. rad 10 12 4 4 2. Key standard sizes shaft failure theories ppt powerpoint presentation diaMetric woodruff keys are supplied to din 6888 / iso 3912 in c45k key Keyway chartKeys standard metric keyways mechanical. Keyway misumiKey and keyway dimensions. Consumers should consult with suppliers. - Series EL couplings supplied with Metric series: KM/KML, HM . boeray 164pcs Woodruff Key Assortment Metric Set 17 Sizes Carbon Steel Woodruff-key Kit Woodruff Key-Crankshaft. All dimensions for S. C. The ISO sprockets have large pitches that are measured in sixteenths of an inch, but are expressed in metric units. Metric – Rectangular. Is there a standard for setscrew (grubscrew) over keyways for metric. Couplings can be additionally modified with new JIS keyways based on JIS B 1301. View. The taper ratio of standard pin taper is 1:50 in metric and 1:48 in British. The notes and tables below relate to straight cylindrical involute splines in accordance with BS ISO. 493. For instance, a "1/4 x 1/8" keyway has two sidewalls that are1/8 inch dep, shown as "d" in figure 1. Keyway metric key iso dimensions standard keyways keys r773 pdf bores shaft hub. 5020 2. The tables below show the dimensions of a straight sided spline in accordance with BS 5686:1986, ISO 14-1982: Specification for straight-sided splines for cylindrical shafts: metric nominal dimensions, tolerances and gauging requirements. Woodruff keys are an. Machine the center of these sprockets to fit the exact dimensions of your shaft. 002 on the key. Categories. Standard Metric Keys Keyways for. Shaft and Hub Keyway and Key Sizes dpk3n3gg92jwt. Forrest Addy Diamond. Metric Calculator Bore Size. STANDARD KEYWAY BROACHES revtool eu. The following tables show standard dimensions for keys and their grooves. Standard External Metric Thread and Fastener Sizes M 0. Re-design the shaft shown below to be a uniform,Metric woodruff keys are supplied to din 6888 / iso 3912 in c45k key All torque transmissions resourcesKeyway chart bore resources torque alltorquetransmissions. Interference Fit Bore Tol. 1. However, since the corner of the keyway is normally chamfered, it is difficult to accurately measure a keyway’s depth during manufacture. Our Pull-Type Keyway Broaches are ideal for applications in high volume production pull-type machines. Buy. Keyway and Key Size Dimensions W Standard Key and Keyway Sizing h T1 T r H T2 English Dimensions: Metric Dimensions: Keyway: W x T1 Key: W x T Keyway: W x h Key: W x T Metric Standard Parallel Keyway and Key Sizes Shaft Diameter (mm) Keyway and Key Size Dimension Reference English Standard Keyway and Key Sizes Shaft. European norm specifications are. AGMA ASA Keyway and Bores Design Data including dimension and tolerances. To confirm the status of any standard, identify the replacement standard if it is obsolete and/or purchase the standard please use. 000 +. 053 0. Keyway dimensionsMetric key keyway dimensions per iso/rtt3 js9 width Inch keyway chart ansi agma shaft key width b4 dimensions diameter nominal reference motor electricKeys keyway metric standard keyways sizes engineering shaft key parallel square fit fits mechanical data rectangular british limits figure. Dimensions shown are in Inches, if you wish to convert to mm, please use our universal converter. Taper metric dimensions keyway key bs 1972 keyways keys. Keys are made of steel. ISO Hardware Specifications Table. Loose running fit for wide commercial tolerances or allowances on. EN Standard. ANSI is the American National Standards Institute's standard keyboard layout that America, Australia, Canada and also many Middle-Eastern and Asian countries use. Has anyone got a link to one ? Thanks Roger . A list of standard. 0mm metric, standard. Single bearing supports use Type 1N. AUTOMATION & IIOT. 1-1967 or JIS B 1301-1996 specify sizes and tolerances of the keys and keyways. Displaced 90° From Keyway Center. $. BRITISH STANDARD FOR. 093 / . Key strength and steel analysis entering into the makeup of stock for keys is not within the. 1N, 2N, 3N and 4N are designed to be a non-driven support end. It establishes: (1) the designation symbols used to define specific dimensional limits on drawings, material stock, related tools, gages, etc. Cross-section of a parallel keyed joint. ANSI-B17. American Metric ® Corporation Ametric ® 623 GROUP: 064 Metric Shaft Keys DIN 6885 A 20x12x170 22x9x170 22x14x170 25x9x170 25x14x170 28x10x170 28x16x170 32x11x170 32x18x170 36x12x170 36x20x170 40x14x170 40x22x170 45x16x170 45x25x170 8x7x180 12x8x180 14x9x180 16x7x180 16x10x180 18x7x180 18x11x180 20x8x180 20x12x180. DIN Standard. Shaft keyed keyway aluminum diameter grainger length motor shafts close. Bushings for smaller arbor holes are collared for easier handling. The preferred method for dimensioning a keyway is with a local note. Because this key stock is slightly larger than standard key stock, keys will fit tightly in worn keyways. If a setscrew is required, drill and tap over keyway as shown. 500 ± 0. Metric key keyway shaft standard keyways falk keys bores resources industrial. 8mm 3. In the National basketball Association (NBA), the court is 28. Size Shaft Dia. Hub to Shaft. Email. Get In Touch. this Ansi Standard Keyway Sizes Pdf, but end up in malicious downloads. Metric keyways are dimensioned by width and depth as measured from the radius of the shaft to the center of the keyway. In the Metric system it is common practice to specify the key size. S. 002/-0. . 5020 2. These Pages include various standards. 3mm 3. Loose running fit for wide commercial tolerances or allowances on. Keyway Width. Metric Standard Parallel Keyway and Key Sizes Shaft Diameter (mm) Keyway (mm) Key (mm)* From To Width (W) Depth (h) Width (W. Shaft keyseat dimensions and tolerances were. BS 4235-1:1972: Specification for metric keys and keyways - Parallel and taper keys BS 4235-2:1977, ISO 3912-1977: Specification for metric keys and keyways - Woodruff keys and keyways BS 5686:1986, ISO 14-1982: Specification for straight-sided splines for cylindrical shafts: metric nominal dimensions, tolerances and. 2. Sizes of shafting from 3 to 5 inches in diameter may be either cold-rolled or turned, more frequently the latter, and all larger sizes of shafting must be turned because cold-rolled shafting is not available in diameters larger than 5 inches. Hub keyway depth is one-half the nominal height of the key and measured from the side corner. pdf - Free download as PDF File (. Use individual keyway broaches in a variety of arbor hole sizes. Product data for lock nuts requiring a keyway. ANSI Hardware Deign and Engineering Data. Recommendations for key size, length and keyway depth as a function of shaft diameter are provided in ASME Standards B17. 2M - Lock Washers (Metric Series) This Standard covers the dimensions, physical properties, and methods of testing for helical spring and tooth lock washers. Stock Sizes of Keyshaft. Keyway broach sets contain multiple keyway broaches in a range of sizes for creating precise keyways in the bore holes of pulleys, gears, washers, and other shaft. Woodruff Key Dimensions Fastener Mart, LLC Woodruff Keys dimensions and specificationsThe sizes are already designed to be able to properly carry the load with medium strength fastener (Grade 5 or equivalent) SAE J744 specifies the flanges by a letter and a bolt count. B. Durable. , depending on the lock nut. Available in metric sizes, these 18-8 stainless steel. Therefore, this standard does not intend to replace any existing metric standards, but to define what is preferred. Key KeyWay. DIA. Keyshaft keyed shaft, diameter 1 7/16 in, keyway 3/8 in x 3/16 inKeyway parallel keyways metric t2 wxh bores Keyway keyed keyways boresGates belts, hoses, and applications: standard & non-standard shaft key. Bushings for smaller arbor holes are collared for easier handling. Judicious standard keyways 2019 . Therefore, in order to ensure an appropriate fit, the width and height dimensions of a standard key and keyway must adhere to recommended tolerances. $8. When one end wears out, switch to the opposite end for two times the life of a standard carbide end mill. Keyway size; b h c or r Standard size of b1 and b2 Tightening type Normal type r1 and r2 t1 t2; Standard size Tolerance （h9） Standard size Tolerance b1/b2 tolerance（P9） b1 tolerance（N9） b2 tolerance（Js9） Standard size Tolerance Standard size Tolerance; 2×2: 6~8: 2: 0 -0. Choose from our selection of metric sprockets, including over 1,100 products in a wide range of styles and sizes. Shaft Arbor and Keyseat Dimensional Data American National Standard Keys and Keyways; Standard Metric Keys Keyways for Metric Bores with One Key; Keyway Cutter Hole Keyway Dimensional Data for MIlling Centers and Arbors - ANSI/ASME B94. 000 / +0. If you are in America or North America. 6 Hollow shaft with key - standard design The standard design uses the parts that are normally supplied with every hollow shaft, as shown in Figure 4. FOREWORD. Keyways will be furnished. Length of Screw Thread Engagement per. Keys standard metric keyways mechanical. 34109. These explain the sizes and dimensions required by different keyway families according to different manufacturers, and the charts are used in the making of keyways to ensure correct sizing. A woodruff key, also known as a half‑moon key, is a semi-circular machine shaft key that prevents gears, hubs, or other components from moving independently of a rotating shaft or spindle. 3D Printing & CAD. Specification for metric keys and keyways – Parallel and taper keys BS 4235-1:1972; Matching the woodruff key to the shaft diameter is also specified in DIN 6888Allowance must be made for keyway and setscrews . Standard woodruff keysWoodruff ansi metric keyway fasteners nominal Key steel pulleys belts metric transmissions stationaryenginepartsTool steel & shim stock. This is a +/- band clearance;. keyways /keys dimension in accordance with BS 4235-1:1972: Specification for metric keys and keyways - Parallel and taper keys. 5. Parallel keys are the most widely used machine key. Find the depths to cut in keyway and keyseat. The standard metric fastener thread series for general purpose threaded components is the M thread profile and the coarse pitch thread series. We can provide keyed shafts in any length up to 20 foot. 3750 0. Metric Key & Keyway Dimensions Per ISO/R773 – P9 Width Tolerance . Japanese Industrial Standard (JIS) Hex Fasteners. ANSI B17. Keyway Depth (Normally 1/2 of width). The usage of these tolerances is advised for economic reasons. lt has been approved by the Member Bodies of the following countries : Austria India Belgium Japan Canada Netherlands clearance fit bores with set screws. Made of solid carbide, these keyseat cutters are harder, stronger, and more wear resistant than high-speed steel for the longest life and best finish on hard material. 062 0. INTRODUCTION — The general practice in industry is to supply coupling hubs without fillet radii in the keyway corners to permit the use of standard commercial keys instead of keys with chamfered. May 13th, 2018 - Standard Metric Keys amp Keyways for Metric Bores with One Key Js9 Width Tolerance « Keyways will be furnished per ISO R773 and Js9 width tolerance unless' iet. The inclusion of dimensional data in this Standard is not intended to imply that all products DE- described are stock production items. Re-design the shaft shown below to be a uniform,Metric woodruff keys are supplied to din 6888 / iso 3912 in c45k key All torque transmissions resourcesKeyway chart bore resources torque alltorquetransmissions. The overall length or “C”dimension for each catalog item is included in this catalog. Here, you can find detailed information about these machine elements. They are also often used on tapered shafts. 004/0. Enter your desired preferred tolerance grade and the nomial size. The rounded ends make it easy to slide gears, hubs, and other components into place. View. All keyed Shafting is guaranteed to fit on a bearing, and the ends can be. Gear G is positively located on shaft S by Woodruff key N . Regions using "inch" units work with NEMA standards (see page NEMA Frame Size). Machining of square shafts with rounded ends (with or without keyways) Other machining available upon request per prints provided (drill, tap, threading) For Keyway MM Dimensions – see the table at. 00 : BR-00 Details: 1/16-1/8 Dumont Keyway Broach Set, 0823-0420 : 1/16, 3/32, 1/8: $500. Figure 2 Keyway Sizes. 250 - 8. BS 4235-2:1977, ISO 3912-1977: Specification for metric keys. 1. 25: 2 Relevant British Standards. The inch and metric dimensions here correspond to common values. At Eagle Tool, we stock a full line of both standard and metric keyways, held in an oversize condition, so that we can alter to suit your immediate needs. Since these U-joints have zero backlash (no play), there’s no motion lost when your shafts change direction, so machines move smoothly with more accurate, repeatable motion. 2-1967. Metric Remachinable One-Piece Split Coupling with Keyways (22) Fully metric, including clamp screws. Key Length DIN 6885. This is a multi-part document divided into the following parts: Part 1 Metric keys and keyways. pdf. 4. Standard External Metric Thread and Fastener Sizes M 0. Standard Keyways and Setscrews Diameter of Shaft Keyway Width × Depth Setscrew Diameter of Shaft Keyway Width × Depth Setscrew 1/2 - 9/16 1/8 × 1/16 10-24 2 5/16 - 2 3/4 5/8 × 5/16 5/8 *Keyway Broaches. The main difference between each of the hex cap screw standards is the width across the flats dimensions for the M10, M12, and M14. These easy-to-adjust components maintain perpendicularity to <0. ISO 286 Chart Calculator. We can provide keyed shafts in any length up to 20 foot. See ANSI/AGMA 9112-B14 for metric bores with metric keyways. You may also refer detailed information on British Standard Metric Keys and Keyways. In addition to the standard sprockets, special sprockets may be available in the same styles . 020 0. Metric Key & Keyway Dimensions Per ISO/R773 – Js9 Width Tolerance «. Bushings rest inside the arbor hole of your workpiece and act as guides to ensure rigid and accurate keyway cutting. In AGMA 9112-B15 the “measurement of bores” section was moved from an annex to clause 4. 2 Normative references . As double U- joints, they connect and transfer torque between two shafts that are either parallel to each other or are misaligned at an angle. This standard makes reference to the following British Standards: BS 46, Keys and keyways and taper pins. Metric Calculator Bore Size. Our Pull-Type Keyway Broaches are ideal for applications in high volume production pull-type machines. Metric thread, 5H: ISO 965-3 Axial run-out. 5000 2. KEYS AND KEYSEATS webpal org. B. Standards such as BS 46, ANSI B17. Keys are made of steel. 8 mm. 2 metres. Metric Roller Chain. Design of Square Key and Keyway (Wood Ruff) Stress, Shear and Torque. As your Tooling Concierge, we use our expertise to. Also known as sine keys. Cutting Tools. Keyway Width. Woodruff key cutter size chartStandard woodruff keys Shaft standard key sizes rectangular gates keys diameters most non std readily. 5 times the shaft diameter to ensure a good load distribution over the entire key length when the shaft becomes twisted when loaded in torsion. Although similar in principle to BS 46-1, for inch. This standard presents metric dimensions, tolerances, sizes and fits for straight bores, tapered bores, keys and keyways for unmounted industrial flexible couplings. 4 m= ––– (2-5) P d 2. Referencing Figure 1, the. DIN 472 circlips agujeros. All dimensions in mm. 1. Nearly every shaft diameter has a corresponding standard keyway width and depth – this calculator helps you find it. 9 Small Head Hex Flange Zinc Plated; DIN 910 Hexagon Head Pipe Plug. shaft diameter u. • Keys DIN 6885 → Page 842. G&G Manufacturing Company 4432 McKinley Street P. Standard woodruff keysWoodruff ansi metric keyway fasteners nominal Key steel pulleys belts metric transmissions. 424 Minimum 2. KHK produces a wide range of standard & special spur gears. Metric External Table Chart Thread Designations Sizes M 1. 438 . 477 Maximum 2. 2 Keyways - Dimensions for keyways are given in Table 3. Shaft /Hub/keyway material (BS EN 10083 C45 normalised. g. Accu-Flange ™ mounting collars are machinable flange collars that feature a standard keyway with three through holes and three tapped holes and an integral clamp design and relief groove mechanism. Standard L Type coupling hub materials are either sintered iron (L035-L190) or cast iron (L225-L276). DOWNLOADS. High Speed Steel, Cobalt, Cutting Tools, Broach, Steel Cutting Broach. 1 Metres Long. For example: a keyway. I can't find one for metric as all my book are for imperial. All material is furnished as Cold Drawn, Ground & Polished. Double bearing supports use a Type 3N, 3L and 3K. Did. Keyway Bore Diameter Size Bore Reference -0. BS: 449: Part 2 requires an active Premium Membership with. This British Standard has been approved by The Mechanical Engineering Industry Standards Committee. Referencing Figure 1, the keyway dimension is W x T 1. Din 6885 H7 H9 Tolerances pdfsdocuments2 com. Metric or inch keyways can be selected with the modification symbol. Metric keyways are dimensioned by width and depth as measured from the radius of the. Thin parallel tkeys and their corresponding keyways (Dimensions in millimetres) Clavetage par clavettes paralldes minces (Dimensions en millim&res) First edition - 1974-08-15 UDC 621. Failure to do so British ISO Metric Screw Threads Designations. C, Cotter Pin Hole has centerline. In Australia, backyard half-courts generally start in size from about 7metres in height to fit the "free-throw line" (or 9m to fit the "three-point line") and 4 or 5 metres in width and upwards.