This Aerospace Standard specifies the inside diameters, cross-sections, tolerances, and size identification codes (dash numbers) for O-rings used in sealing applications and for straight thread tube fitting boss gaskets. The dimensions and tolerances specified in this standard are suitable for an...

Designation of a wood screw thread of nominal diameter d1 = 4 mm: Thread 4 DIN 7998

This standard establishes a conformance test procedure for the performance of Nonmetallic Resistant Element Prevailing-Torque Screws (hereinafter called "REPT screw"), in nominal screw sizes No. 0 thru 1-1/2 in. While the requirements of this standard apply to Nonmetallic Resistant Element Screws...

1.1.1 This standard contains the complete dimensional, mechanical and performance requirements for metric series hexagon keys and bits of nominal sizes from 0.7 mm to 36 mm recognized as "American National Standard." They are primarily intended to be used for tightening and loosening metric serie...

This standard specifies product grade A hexagon socket thin head cap screws with pilot recess for wrench key with ISO metric screw thread from M4 up to and including M36. If, in special cases, the screws are to meet requirements other than those given in this standard, e.g.with regard to propert...

This standard specifies requirements for M1,6 to M10 square thin nuts assigned to product grade B. If, in special cases, nuts are to comply with specifications other than those given in this standard, e.g. regarding property class, these shall be selected in accordance with the relevant standards.