{"product_id":"hex-head-bolts-set","title":"Hex Head Bolt Sets with Nyloc M3–M8 — A2 DIN 933\/982","description":"\u003ch3\u003eWhy choose these A2 hex bolt nyloc sets\u003c\/h3\u003e\n\u003cp\u003eA complete vibration-proof bolted-joint kit — each set pairs a full-thread hex head bolt (DIN 933), a Form A flat washer (DIN 125A) and a nylon-insert lock nut (DIN 982) in matching A2 stainless steel. The nylon insert grips the bolt thread and resists loosening from vibration and thermal cycling, while the kit format saves you sourcing matching components separately.\u003c\/p\u003e\n\u003ch3\u003eSizes available\u003c\/h3\u003e\n\u003cp\u003eFive bolt diameters — M3, M4, M5, M6 and M8 — across thirteen length options from 10mm up to 100mm (plus a 22mm step for awkward jobs). Full-thread bolts let you clamp variable thicknesses with the same length.\u003c\/p\u003e\n\u003ch3\u003ePack option\u003c\/h3\u003e\n\u003cp\u003eSupplied in 5-set packs (each set = bolt + nyloc nut + washer). Mix sizes 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\u003eMachinery and equipment brackets, motorcycle and bicycle fittings, garden machinery and mowers, trailer body work, vehicle accessory mounting, exhibition stand assembly and any threaded joint that’s exposed to vibration, where a plain hex nut would slowly back off.\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, then thread the nyloc nut on by hand until it engages the nylon insert (you’ll feel the resistance increase). Tighten with two spanners to firm torque. A nyloc nut is designed for single use — the insert deforms on first fit, so re-using the same nut on a fresh joint gives a reduced grip.\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":54688954810705,"sku":"M310HexBolts","price":3.95,"currency_code":"GBP","in_stock":true},{"title":"16mm \/ M3","offer_id":54688954843473,"sku":"M316HexBolts","price":3.95,"currency_code":"GBP","in_stock":true},{"title":"20mm \/ M3","offer_id":54688954876241,"sku":"M320HexBolts","price":4.1,"currency_code":"GBP","in_stock":true},{"title":"25mm \/ M3","offer_id":54688954909009,"sku":"M325HexBolts","price":4.2,"currency_code":"GBP","in_stock":true},{"title":"30mm \/ M3","offer_id":54688954941777,"sku":"M330HexBolts","price":4.4,"currency_code":"GBP","in_stock":true},{"title":"40mm \/ 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