This standard specifies the type and size of the hexagonal width through gauge for testing hexagonal socket screws. This standard

This standard specifies the gauge type and size for testing the hexagonal width across flats, diagonal width and hexagonal hole de

This standard specifies the type and size of the test die for testing the tightening height of hexagonal bolts and hexagonal nuts.

This standard specifies the type and size of the test die for testing the head height of bolts and screws. This standard is applic

This standard specifies the type and size of the test die for testing the height of slotted and cross recessed countersunk, semi-c

This standard specifies the type and size of the die for testing hexagonal head screws and hexagonal nut diagonal width. This stan

This standard specifies the dimensions, technical requirements, markings and logos of cross slot precision punching dies for manuf

This standard specifies the lifting eye nuts with thread specifications of M8~M100×6. This standard is applicable to general loadi