All-Metal Hex Lock Nut – Fastener Weight Calculator

Calculate the exact weight of your extreme-environment fasteners instantly. Our All-Metal Hex Lock Nut Weight Calculator is designed specifically for prevailing torque type hex nuts featuring a captive metal insert (DIN 980 M standard).

Whether for automotive exhaust systems, heavy-duty engines, or high-temperature machinery, precision matters. Unlike nylon-insert nuts, these all-metal lock nuts utilize a spring steel clip to withstand extreme heat while providing exceptional vibration resistance. Get accurate weight data in seconds.

Supported Size Range:

  • Diameters: M3, M4, M5, M6, M8, M10, M12, M16, M20, M24, M30, M36, up to M39.
  • Material: All-Metal Construction (Polymer-free and heat-resistant, perfect for high-temperature environments).
  • Key Feature: Built-in Metal Insert (A captive spring clip grips the bolt threads to prevent loosening under vibration).

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All-Metal Hex Lock Nut Specification & Weight Reference (Stainless Steel 304)

Thread SizePitch (mm)Nut Height (mm)Wrench Size (mm)Single Weight (g)Weight per 1000 pcs (kg)
M30.503.705.50.4560.46
M40.704.207.00.7560.76
M50.805.108.01.161.16
M61.006.0010.02.432.43
M81.258.0013.05.045.04
M101.5010.0017.010.8610.86
M121.7512.0019.015.9115.91
M162.0016.0024.032.0132.01
M202.5020.0030.068.0068.00
M243.0024.0036.097.0097.00

Applicable Standards: DIN 980 (M), GB/T 6184

Note: Weights shown are for Stainless Steel 304 only. Use the calculator above for other materials (Stainless Steel, Brass, Titanium, etc.) and additional specifications.

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