{"product_id":"zinc-plated-coarse-thread-square-head-bolts","title":"Zinc Plated Coarse Thread Square Head Bolts","description":"\u003cp\u003eThese high-quality Square Head Bolts are designed for applications requiring a traditional aesthetic or specific functional advantages over standard hex bolts. Featuring a classic four-sided head design, these fasteners provide a greater surface area in contact with the part being fastened. This increased contact area offers superior resistance to loosening once installed, making them a reliable choice for various structural and mechanical projects.\u003c\/p\u003e\n\n\u003cp\u003eConstructed from durable steel and finished with a protective zinc plating, these bolts offer enhanced corrosion resistance, ensuring longevity in indoor and light outdoor environments. The coarse thread design allows for quicker assembly and better grip in heavy-duty materials. Square head bolts are traditionally mated with square-headed nuts, though they are versatile enough for many specialized fastening needs.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Zinc Plated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Style:\u003c\/strong\u003e Square\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type:\u003c\/strong\u003e Coarse Thread\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness\/Grade:\u003c\/strong\u003e Grade 2 \/ A307\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Square Head Bolt\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWhether you are performing repairs on vintage machinery or working on new construction that requires the unique grip of a four-sided head, these bolts deliver the strength and reliability you need. The Grade 2 \/ A307 rating ensures they meet industry standards for general-purpose hardware, providing a balance of ductility and strength for your fastening applications.\u003c\/p\u003e","brand":"Fastener Line","offers":[{"title":"1\/4\"-20 \/ 1\" \/ 15 pcs.","offer_id":48714199466216,"sku":"39741","price":6.58,"currency_code":"USD","in_stock":true},{"title":"1\/4\"-20 \/ 1-1\/4\" \/ 12 pcs.","offer_id":48714199498984,"sku":"39742","price":6.78,"currency_code":"USD","in_stock":true},{"title":"1\/4\"-20 \/ 1-1\/2\" \/ 12 pcs.","offer_id":48714199531752,"sku":"39743","price":8.58,"currency_code":"USD","in_stock":true},{"title":"1\/4\"-20 \/ 2\" \/ 10 pcs.","offer_id":48714199564520,"sku":"39744","price":8.48,"currency_code":"USD","in_stock":true},{"title":"1\/4\"-20 \/ 2-1\/2\" \/ 10 pcs.","offer_id":48714201170152,"sku":"39745","price":9.48,"currency_code":"USD","in_stock":true},{"title":"1\/4\"-20 \/ 3-1\/2\" \/ 6 pcs.","offer_id":48714199597288,"sku":"39747","price":7.23,"currency_code":"USD","in_stock":true},{"title":"1\/4\"-20 \/ 4\" \/ 5 pcs.","offer_id":48714202317032,"sku":"39748","price":8.23,"currency_code":"USD","in_stock":true},{"title":"5\/16\"-18 \/ 1\" \/ 10 pcs.","offer_id":48714199630056,"sku":"71701","price":6.39,"currency_code":"USD","in_stock":true},{"title":"5\/16\"-18 \/ 1-1\/4\" \/ 10 pcs.","offer_id":48714199662824,"sku":"71702","price":6.78,"currency_code":"USD","in_stock":true},{"title":"5\/16\"-18 \/ 1-3\/8\" \/ 10 pcs.","offer_id":48714199695592,"sku":"71703","price":7.18,"currency_code":"USD","in_stock":true},{"title":"5\/16\"-18 \/ 1-1\/2\" \/ 10 pcs.","offer_id":48714199728360,"sku":"71704","price":7.55,"currency_code":"USD","in_stock":true},{"title":"5\/16\"-18 \/ 1-3\/4\" \/ 10 pcs.","offer_id":48714199761128,"sku":"71705","price":8.09,"currency_code":"USD","in_stock":true},{"title":"5\/16\"-18 \/ 2-1\/2\" \/ 10 pcs.","offer_id":48714199793896,"sku":"71707","price":8.54,"currency_code":"USD","in_stock":true},{"title":"5\/16\"-18 \/ 3\" \/ 10 pcs.","offer_id":48714199826664,"sku":"71708","price":9.05,"currency_code":"USD","in_stock":true},{"title":"5\/16\"-18 \/ 4\" \/ 10 pcs.","offer_id":48714199859432,"sku":"71711","price":9.85,"currency_code":"USD","in_stock":true},{"title":"3\/8\"-16 \/ 1\" \/ 10 pcs.","offer_id":48714199892200,"sku":"71721","price":7.35,"currency_code":"USD","in_stock":true},{"title":"3\/8\"-16 \/ 1-1\/4\" \/ 10 pcs.","offer_id":48714199924968,"sku":"71722","price":8.65,"currency_code":"USD","in_stock":true},{"title":"3\/8\"-16 \/ 1-1\/2\" \/ 10 pcs.","offer_id":48714199957736,"sku":"71723","price":8.29,"currency_code":"USD","in_stock":true},{"title":"3\/8\"-16 \/ 1-3\/4\" \/ 10 pcs.","offer_id":48714199990504,"sku":"71724","price":8.56,"currency_code":"USD","in_stock":true},{"title":"3\/8\"-16 \/ 2-1\/2\" \/ 10 pcs.","offer_id":48714200023272,"sku":"71726","price":10.07,"currency_code":"USD","in_stock":true},{"title":"3\/8\"-16 \/ 3\" \/ 10 pcs.","offer_id":48714200056040,"sku":"71727","price":10.95,"currency_code":"USD","in_stock":true},{"title":"3\/8\"-16 \/ 4\" \/ 10 pcs.","offer_id":48714200088808,"sku":"71728","price":11.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0258\/7584\/1076\/products\/39747_fa0271c2-ca60-464c-9e1e-cc0f5f9de9d8.jpg?v=1756320331","url":"https:\/\/fastenerline.com\/products\/zinc-plated-coarse-thread-square-head-bolts","provider":"Fastener Line","version":"1.0","type":"link"}