DIN 982
DIN 982 - Prevailing torque type hexagon nuts with nonmetallic insert
Withdrawn German prevailing torque hexagon nuts with a non-metallic insert, high form: the predecessor of the regular ISO 7040 nut, with the same steel body height but the DIN 934 widths across flats on M10, M12, M14 and M22 (17, 19, 22 and 32 mm instead of 16, 18, 21 and 34 mm) and a different overall height on most sizes. High form means taller than the low DIN 985 with the same hexagon; the nut corresponds to the regular ISO 7040, not to the high ISO 7041. The steel body carries the thread, and a non-metallic insert, such as polyamide, is held in a crimped collar above it. Off the shelf parts are still commonly supplied to this older specification. Covers metric coarse pitch from M5 to M24 and fine pitch threads from M8x1 to M24x2; the ISO fine pitch version is ISO 10512.
Outdated standard