1.1 This specification establishes the requirements for free-cutting brass rod, bar, wire, and shapes of any specified cross section produced from Copper Alloy UNS No. C36000 suitable for high-speed screw machining applications and moderate thread rolling.

Bracketed nominal diameters should be avoided wherever possible. Normally these tapping screws are made in the sizes for which weight details are given. It is not practicable to make the sizes for which dashes appear instead of length data.

This standard covers the complete dimensional and general data for metric series heavy hex flange screws recognized as American National Standard.

This Standard specifies the shape and basic dimensions of hexalobular internal driving feature for bolts and screws including the gauging method. The curvature of the contour of the hexalobular internal driving feature is defined by the gauges specified in Tables 3, 4 and 5. Additional informati...

The surface of the spring washer and of the safety ring must be smooth and free from scale and burr. The spring washers must be coiled with constant pitch and without any kinks (with the exception of the barbing of the ends). The ends of the spring washer which bite into the parent material must...

Shim rings are designed to prevent machine components from moving axially. The preferred application of these rings is to compensate for the play of such components where secured by circlips as specified in DIN 471 and DIN 472, DIN 983 and DIN 984 or lock washers as specified in DIN 6799. Shim ri...