scope:

1. SCOPE.

This specification covers the material and perfonnauce requirements of the following type of weld nuts: IS0 metric coarse threaded nuts M5 to Ml4 inclusive. Nuts of the same blank design as above but with a plain unthreaded hole suitable for the assembly of a thread rolling screws as defined in WD 95 1 or WD 952. IS0 metric coarse threaded nuts M8 to Ml4 inclusive with a prevailing torque feature of the plastic insert type. 3 -. REFERENCES. WE 950 Prevailing torque type steel hexagon nuts and hexagon flange nuts- WSB-M X250-C3 WSD-MlA283-Bl to B49 WSK-M4D67 1-A - Mechanical and performance properties. Steel, sheet, zinc, zinc/iron and zinc alloy coated. Steel, cross reference for standard parts. Polyamide (PA) 46, Heat Stabilized Molding Compound   3. MATERIAL. All weld nuts shall be steel in accordance with WSD-MlA283-Bl, B2, B3$ 4, B47, B48 or B49. The insert shall be plastic in accordance with WSK-M4D671-A or a plastic material that will achieve the requi