Nyloc Lock Nuts (DIN 985 / ISO 7040) are a type of nuts used across industrial assembly. Below is the complete size table together with material, standard and application guidance.
What Are Nyloc Lock Nuts?
Nyloc Lock Nuts are nuts defined by DIN 985 / ISO 7040. They are selected by thread size and the dimensional characteristics shown below, and are available in a range of materials and finishes to suit the application and environment.
Dimensions & Specifications (DIN 985 / ISO 7040)
| Size | Pitch (mm) | Width across flats s (mm) | Width across corners e min (mm) | Total height m (mm) | Metal height (mm) | Reference standard | Notes |
|---|---|---|---|---|---|---|---|
| M3 | 0.5 | 5.5 | 6.01 | 4.0 | 2.4 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M4 | 0.7 | 7.0 | 7.66 | 5.0 | 3.2 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M5 | 0.8 | 8.0 | 8.79 | 5.0 | 3.7 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M6 | 1.0 | 10.0 | 11.05 | 6.0 | 4.7 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M8 | 1.25 | 13.0 | 14.38 | 8.0 | 6.14 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M10 | 1.5 | 16.0 | 17.77 | 10.0 | 8.04 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M12 | 1.75 | 18.0 | 20.03 | 12.0 | 9.64 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M14 | 2.0 | 21.0 | 23.36 | 14.0 | 11.0 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M16 | 2.0 | 24.0 | 26.75 | 16.0 | 13.0 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M20 | 2.5 | 30.0 | 32.95 | 20.0 | 16.0 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M24 | 3.0 | 36.0 | 39.55 | 22.0 | 19.0 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M30 | 3.5 | 46.0 | 50.85 | 25.0 | 24.0 | DIN 985 / ISO 7040 | With nylon insert, single use |
| M36 | 4.0 | 55.0 | 60.79 | 29.0 | 29.0 | DIN 985 / ISO 7040 | With nylon insert, single use |
Materials & Finishes
Common materials include carbon steel (typically zinc plated or hot-dip galvanized), alloy steel in property classes 8.8, 10.9 and 12.9, and stainless steel A2 (304) or A4 (316) for corrosion resistance. Specify the material, property class and surface finish appropriate to your load and environment.
Typical Applications
Paired with bolts and studs across machinery, structures and equipment; lock variants resist loosening under vibration.
Related Fasteners
Pricing
Nyloc Lock Nuts are stocked and supplied to order. Pricing starts from approximately US$0.040 per piece for standard sizes in carbon steel; final pricing depends on size, material, finish and order quantity (MOQ applies). Request a quotation below for your exact specification.
Request a Quotation for Nyloc Lock Nuts
Tell us the size, material, finish and quantity you need for Nyloc Lock Nuts (DIN 985 / ISO 7040) and our team will respond within one business day.