DIN 985 Lock Nut M4 Aluminium Alloy

DIN 985 Lock Nut M4 Aluminium Alloy — stocked and shipped worldwide by SFX Fasteners. Available for single-piece retail orders — no minimum order — dispatched from our own warehouse within 24–48 hours.

Specifications

Manufactured to DIN 985. Dimensions meet the published standard; tolerances per the standard’s normal grade unless stated otherwise. Full dimension table available on request.

Ordering & shipping

Need a specific size, grade or standard? Send us a quote request — we quote to drawing and to DIN / ANSI / GB / JIS standards.

About this DIN 985 nut

This is a nut made to DIN 985, in Aluminium Alloy, supplied anodised, with an M4 thread. Every dimension is stated against the standard named above; where a tolerance class matters to your design, ask us and we will confirm it in writing before you order.

A nut is the closing half of a bolted joint. Its property class is chosen to match the bolt it is paired with — a class 8 nut for a grade 8.8 bolt, so the thread strips before the bolt breaks. Used wherever a bolt or stud has to be tightened from the far side, and for locking and positioning duties on machinery and steelwork.

DIN 985 is the same part as ISO ISO 10511, GB/T GB/T 889.1. Check the head geometry, the key size and the tolerances before substituting one for another — those do differ between systems.

Anodising grows a hard, integral oxide layer on aluminium. It adds wear and corrosion resistance and takes dye for colour, without adding measurable thickness.

Sold by the piece, so one is a valid order. Stock lines leave our warehouse within 24–48 hours of cleared payment, and freight is calculated at checkout from the packed weight and the destination.