Button Head Bolt Sets Pack of 5 M3–M8 — A2 Fully Threaded

Why choose these A2 button head bolt sets

A pre-matched 5-set kit of low-profile Allen-drive button head bolts with hex nuts and Form A washers, all in A2 stainless steel. Each set saves you sourcing matching components separately and gives you a complete clearance-friendly bolted joint in one part number. Fully threaded to ISO 7380 — so you can clamp variable thicknesses with the same length — and finished in corrosion-resistant A2 stainless that handles interior, workshop and light outdoor use.

Sizes available

Five bolt diameters — M3, M4, M5, M6 and M8 — across eleven length options from 10mm up to 100mm. Each set contains 5 bolts, 5 hex nuts and 5 flat washers in matching A2 stainless steel.

Pack option

Supplied as 5-set packs. Mix sizes across the Fasteners range in one checkout to qualify for free UK delivery on orders over £20.

Typical uses

Equipment panels and enclosures, AV racks and mounts, machinery covers, garden furniture, motorcycle and bicycle brackets, exhibition stand assembly, 3D-printer frames, drone and robotics builds, and any threaded joint where a low-profile dome head improves clearance or appearance.

How to fit

Pass the bolt through the workpiece with the washer on the nut side, run the hex nut down by hand, then tighten with a hex (Allen) key on the head against a spanner on the nut. Add a separate spring or serrated washer where vibration is expected. Avoid over-torquing small sizes; A2 stainless is softer than carbon steel.

Delivery

Same-day dispatch on orders placed before 2pm — free UK delivery on orders over £20.