{"product_id":"set-bolt-button-head-nut-washers","title":"Button Head Bolt Sets M3–M8 — A2 Stainless ISO 7380","description":"\u003ch3\u003eWhy choose these A2 button head bolt sets\u003c\/h3\u003e\n\u003cp\u003eA complete bolted-joint kit — each set pairs a low-profile button head bolt (ISO 7380) with a flat washer and your choice of nut. The rounded dome head sits lower than a standard hex bolt for clearance-sensitive jobs, and the Allen-key socket gives clean torque without rounding. A2 stainless steel handles interior, workshop and light outdoor use without rusting.\u003c\/p\u003e\n\u003ch3\u003eSizes available\u003c\/h3\u003e\n\u003cp\u003eBolt diameters M3, M4, M5, M6 and M8 across thirteen length options from 10mm up to 100mm. A nut-only option in M3 is also stocked for replacements.\u003c\/p\u003e\n\u003ch3\u003ePack options\u003c\/h3\u003e\n\u003cp\u003eChoose your nut style — wing nut for hand-tightening, nylon lock nut for vibration resistance, or full hex nut for standard joints — in single sample, 2-pack or 5-pack quantities. Mix sizes and styles 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, AV racks, machinery covers, garden furniture, motorcycle and bicycle brackets, indoor signage, exhibition stand assembly, drone and robotics builds, and any flush-finish bolted joint where a low-profile head is preferred.\u003c\/p\u003e\n\u003ch3\u003eHow to fit\u003c\/h3\u003e\n\u003cp\u003eDrop the bolt through the workpiece, fit the washer to the head side and run the chosen nut down the thread. Drive with a hex (Allen) key while holding the nut with a spanner. Wing nuts allow tool-free release on covers; nyloc nuts give vibration-proof retention. Avoid over-torquing M3 and M4 — 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":"30mm \/ M3 \/ 3mm \/ Nylon Lock Nut","offer_id":54689000259921,"sku":"FAS-BUTTONBOLT-A2-SET-PL-30MM-M3-3MM-NYLON-LOCK-NUT","price":4.25,"currency_code":"GBP","in_stock":true},{"title":"30mm \/ M3 \/ 3mm \/ Full Nut","offer_id":54689000292689,"sku":"FAS-BUTTONBOLT-A2-SET-PL-30MM-M3-3MM-FULL-NUT","price":4.25,"currency_code":"GBP","in_stock":true},{"title":"60mm \/ M5 \/ 5mm \/ Nylon Lock Nut","offer_id":54689000325457,"sku":"FAS-BUTTONBOLT-A2-SET-PL-60MM-M5-5MM-NYLON-LOCK-NUT","price":5.0,"currency_code":"GBP","in_stock":true},{"title":"60mm \/ M5 \/ 5mm \/ Full 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