{"product_id":"button-head-bolts-set","title":"Button Head Bolt Sets Pack of 5 M3–M8 — A2 Fully Threaded","description":"\u003ch3\u003eWhy choose these A2 button head bolt sets\u003c\/h3\u003e\n\u003cp\u003eA 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.\u003c\/p\u003e\n\u003ch3\u003eSizes available\u003c\/h3\u003e\n\u003cp\u003eFive 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.\u003c\/p\u003e\n\u003ch3\u003ePack option\u003c\/h3\u003e\n\u003cp\u003eSupplied as 5-set packs. Mix sizes across the Fasteners range in one checkout to qualify for free UK delivery on orders over £20.\u003c\/p\u003e\n\u003ch3\u003eTypical uses\u003c\/h3\u003e\n\u003cp\u003eEquipment 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.\u003c\/p\u003e\n\u003ch3\u003eHow to fit\u003c\/h3\u003e\n\u003cp\u003ePass 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.\u003c\/p\u003e\n\u003ch3\u003eDelivery\u003c\/h3\u003e\n\u003cp\u003eSame-day dispatch on orders placed before 2pm — free UK delivery on orders over £20.\u003c\/p\u003e","brand":"Universal Hardware","offers":[{"title":"10mm \/ M3","offer_id":54688958710097,"sku":"M310ButtonNutSets","price":3.95,"currency_code":"GBP","in_stock":true},{"title":"16mm \/ M3","offer_id":54688958742865,"sku":"M316ButtonNutSets","price":4.15,"currency_code":"GBP","in_stock":true},{"title":"20mm \/ M3","offer_id":54688958775633,"sku":"M320ButtonNutSets","price":4.25,"currency_code":"GBP","in_stock":true},{"title":"25mm \/ M3","offer_id":54688958808401,"sku":"M325ButtonNutSets","price":4.35,"currency_code":"GBP","in_stock":true},{"title":"30mm \/ M3","offer_id":54688958841169,"sku":"M330ButtonNutSets","price":4.5,"currency_code":"GBP","in_stock":true},{"title":"40mm \/ 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