Nyloc Lock Nuts M3–M10 — A2 Stainless Steel DIN 982

Why choose these Nyloc Lock Nuts

Our Nyloc Lock Nuts are precision-formed from A2 (18/8) stainless steel to DIN 982 — the European standard for the full-height (high-form) nylon insert hex nut. As the bolt thread is screwed into the nut it cuts a path through the unthreaded nylon collar at the top, generating an interference fit that resists vibration loosening across a wide temperature range. A2 stainless gives excellent corrosion resistance for indoor and most outdoor environments, including damp and coastal-adjacent settings.

Sizes available

• M3 / 3mm — electronics, instruments and small craft assemblies
• M4 / 4mm — brackets, panels and light fittings
• M5 / 5mm — furniture, signage and trim
• M6 / 6mm — handrails, fencing and general fabrication
• M8 / 8mm — automotive, trailer and machinery fixings
• M10 / 10mm — structural and heavy-duty applications

Pack options

Each size is available as a single unit sample, or in packs of 10 or 25. Use the variation selectors above to choose the exact combination you need.

Typical uses

• Automotive, motorcycle, cycle and trailer joints subject to vibration
• Garden furniture, fencing, decking and outdoor signage
• Agricultural and groundscare machinery where shock loads loosen plain nuts
• Workshop jigs, fixtures and any assembly that will be disassembled occasionally — nyloc nuts retain their locking action for a limited number of refits

How to fit

Place the nut onto a standard metric bolt or stud with the plain hex face against the work surface and the nylon collar facing away from the joint. Tighten with a hex spanner or socket — the bolt thread will cut into the nylon insert as it engages, producing the locking action. Use a clean, undamaged bolt thread for best results, and replace the nut rather than re-using if the locking action feels weak.

Delivery

Same-day dispatch on orders placed before 2pm, Monday to Friday. Free UK delivery on orders over £20. Tracked options available at checkout.