{"product_id":"zinc-plated-steel-coarse-thread-square-head-bolts","title":"Zinc Plated Steel Coarse Thread Square Head Bolts","description":"\u003cp\u003eThese high-quality Square Head Bolts are designed for applications requiring a secure, reliable hold. Featuring a traditional four-sided head design, these bolts provide a greater surface area in contact with the fastened part compared to standard hex bolts. This increased contact area offers superior resistance to loosening, making them an excellent choice for both heavy-duty industrial projects and vintage-style restorations.\u003c\/p\u003e\n\n\u003cp\u003eConstructed from durable Grade 2 \/ A307 steel, these fasteners offer the strength and dependability needed for general-purpose fastening. Each bolt is finished with a protective zinc plating, which provides essential corrosion resistance and a clean, professional appearance. To ensure the best fit and maximum stability, square head bolts are typically mated with square-headed nuts.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e Grade 2 \/ A307\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\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 working on machinery, construction, or specialized hardware projects, these square head bolts provide the torque and gripping power necessary for a lasting connection. Their unique geometry allows for easy wrenching and a distinct aesthetic that bridges the gap between modern utility and classic hardware design.\u003c\/p\u003e","brand":"Fastener Line","offers":[{"title":"5\/16\"-18 \/ 1\" \/ 12 pcs.","offer_id":48714214408424,"sku":"87676","price":7.84,"currency_code":"USD","in_stock":true},{"title":"5\/16\"-18 \/ 1-1\/4\" \/ 10 pcs.","offer_id":48714214441192,"sku":"87677","price":8.56,"currency_code":"USD","in_stock":true},{"title":"5\/16\"-18 \/ 1-3\/8\" \/ 8 pcs.","offer_id":48714214473960,"sku":"86671","price":10.44,"currency_code":"USD","in_stock":true},{"title":"5\/16\"-18 \/ 1-3\/8\" \/ 10 pcs.","offer_id":48714214506728,"sku":"87678","price":7.95,"currency_code":"USD","in_stock":true},{"title":"5\/16\"-18 \/ 1-1\/2\" \/ 10 pcs.","offer_id":48714214539496,"sku":"87679","price":8.32,"currency_code":"USD","in_stock":true},{"title":"5\/16\"-18 \/ 1-3\/4\" \/ 10 pcs.","offer_id":48714214572264,"sku":"87680","price":8.69,"currency_code":"USD","in_stock":true},{"title":"5\/16\"-18 \/ 2\" \/ 10 pcs.","offer_id":48714214605032,"sku":"87681","price":9.23,"currency_code":"USD","in_stock":true},{"title":"5\/16\"-18 \/ 2-1\/2\" \/ 10 pcs.","offer_id":48714214637800,"sku":"87682","price":9.73,"currency_code":"USD","in_stock":true},{"title":"5\/16\"-18 \/ 3\" \/ 8 pcs.","offer_id":48714214670568,"sku":"87683","price":8.79,"currency_code":"USD","in_stock":true},{"title":"3\/8\"-16 \/ 1\" \/ 12 pcs.","offer_id":48714214703336,"sku":"87685","price":8.36,"currency_code":"USD","in_stock":true},{"title":"3\/8\"-16 \/ 1-1\/4\" \/ 10 pcs.","offer_id":48714214736104,"sku":"87686","price":7.95,"currency_code":"USD","in_stock":true},{"title":"3\/8\"-16 \/ 1-1\/2\" \/ 10 pcs.","offer_id":48714214768872,"sku":"87687","price":8.34,"currency_code":"USD","in_stock":true},{"title":"3\/8\"-16 \/ 1-3\/4\" \/ 10 pcs.","offer_id":48714214801640,"sku":"87688","price":9.29,"currency_code":"USD","in_stock":true},{"title":"3\/8\"-16 \/ 2\" \/ 10 pcs.","offer_id":48714214834408,"sku":"87689","price":9.37,"currency_code":"USD","in_stock":true},{"title":"3\/8\"-16 \/ 2-1\/2\" \/ 10 pcs.","offer_id":48714214867176,"sku":"87690","price":9.79,"currency_code":"USD","in_stock":true},{"title":"3\/8\"-16 \/ 3\" \/ 8 pcs.","offer_id":48714214899944,"sku":"87691","price":9.45,"currency_code":"USD","in_stock":true},{"title":"3\/8\"-16 \/ 4\" \/ 10 pcs.","offer_id":48714214932712,"sku":"71728","price":11.92,"currency_code":"USD","in_stock":true},{"title":"3\/8\"-16 \/ 4\" \/ 6 pcs.","offer_id":48714214965480,"sku":"87692","price":8.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0258\/7584\/1076\/products\/87676_56dff09a-bb4d-4d32-8e4e-4a33107aa80e.jpg?v=1756312598","url":"https:\/\/fastenerline.com\/products\/zinc-plated-steel-coarse-thread-square-head-bolts","provider":"Fastener Line","version":"1.0","type":"link"}