Thread standards Tapping tools are manufactured in five different standard: ISO, ANSI, DIN, DIN/ANSI and JIS. DIN and ISO are common world-wide, ANSI is most common in American markets and JIS is most common in Asia markets.

Maryland Metrics Technical Data Chart: General Tolerances to DIN ISO 2768 T1 and T2 • The latest DIN standard sheet version applies to all parts made to DIN standards. • Variations on dimensions without tolerance values are according to 'DIN ISO 2768-mk'. Machining Tolerances Calculator - Technical Help. You enter a basic diameter (Fig 1; Dia) and select your desired fit from the calQlation options and Limits and Fits will automatically calculate the machining tolerances (maximum and minimum diameters) for both the Hole and the Shaft.

• ISO, ANSI and JIS have quite short OAL (overall length) and are rather similar, except for the shank diameter which is in inch for ANSI and metric for ISO and JIS • DIN is a long version, with metric shank diameter and long OAL • DIN/ANSI is a mix of both, with ANSI shank diameter and OAL from DIN. ISO shank and square dimensions​ Shank diameter (DMM),mm Square (WSC), mm​ ISO 529 Metric​ ISO 529 UNC/UNF BSW/BSF​ ISO2283 Metric​ ISO2284 G​ ISO2284 Rc​ 2.50 2.00​ M1​ ​ ​ ​ ​ M1.2​ ​ ​ ​ ​ M1.4​ ​ ​ ​ ​ M1.6​ No. 0​ ​ ​ ​ M1.8​ ​ ​ ​ ​ M2​ No.

1​ ​ ​ ​ ​2.80​ 2.24​ M2.2​ No. 2​ ​ ​ ​ M2.5​ No. 3​ ​ ​ ​ 3.15​ 2.50​ M3​ No. 5​ M3​ ​ ​ 3.55​ 2.80​ M3.5​ No.

6​ M3.5 M4​ ​ ​ 4.00​ 3.15​ M4​ ​ M5​ ​ 4.50​ 3.55​ M4.5​ No. 8​ M6​ ​ ​ 5.00​ 4.00​ M5​ No.

10 3/16​ ​ ​ ​ 5.60​ 4.50​ M5.5​ No. 12 7/32​ M7​ ​ ​ 6.30​ 5.0​ M6​ 1/4 M8​ ​ ​ 7.10​ 5.60​ M7​ 9/32​ ​ ​ ​ 8.00​ 6.30​ M8​ 5/16​ M10​ G1/8​ Rc 1/8​ 9.00​ 7.10​ M9​ ​ M12​ ​ ​ 10.00​ 8.00​ M10​ 3/8​ ​ G1/4​ Rc1/4 8.00​ 6.30​ M11​ 7/16​ ​ ​ ​ 9.00​ 7.10​ M12​ 1/2​ ​ ​ 11.20​ 9.00​ M14​ 9/16​ M14​ ​ ​ 12.50​ 10.00​ M16​ 5/8​ M16​ G3/8​ Rc3/8​ 14.00​ 11.20​ M18 M20 11/16 3/4 M18 M20​ ​ ​ 16.00​ 12.50​ M22​ 7/8​ M22​ ​ ​ 18.00​ 14.00​ M24​ 1”​ M24​ G5/8​ Rc5/8​ 20.00​ 16.00​ M27 M30 1 1/8​ M27 M30​ G3/4 Rc3/4​ 22.40​ 18.00​ M33​ 1 1/4 ​ G7/8​ Rc7/8​ 25.00​ 20.00​ M36​ 1 3/8​ ​ G1”​ Rc1”​ 28.00​ 22.40​ M39 M42​ 1 1/2 ​ ​. ANSI shank and square dimensions Shank diameter (DMM), inch​ Square (WSC), inch​ ASME B94.9 machine screw sizes​ ASME B94.9 fract.

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Sizes​ ASME B94.9 metric sizes​ 0.141​​ 0.11​​ No. 0​ ​ M1.6​ No. 3​ ​ M2.5​ No.

6​ ​ M3.5​ 0.168​ 0.131​ No. 8​ ​ M4​ 0.194​ 0.152​ No.

10​ ​ M5​ 0.220​ 0.165​ No. Normal tap tolerance is ISO 2 (6H), which generates an average quality fit between screw and nut. Lower tolerance (ISO 1) generates a fine fit without a gap on the flanks between screw and nut. Higher tolerance (ISO 3) generates a rough fit with a large gap.

This is used if the nut is coated, or if a loose fit is preferred. Between tolerances 6H (ISO2) and 6G (ISO3), and between 6G and 7G, there are also taps with tolerance 6HX and 6GX. Windows 7 themes 3d fully customized 2011 free download torrent.

“X” means the tolerance is outside the standard and is used for taps working with high strength or abrasive materials such as cast iron. These materials do not cause oversize problems so higher tolerance can be used in order to increase tool life. The tolerance width is equal between 6H and 6HX. Forming taps are usually produced with a 6HX or 6GX tolerance. Pipe threads refer to the following standards: • G threads to ISO 228-1.