{"product_id":"glvaner-10-sets-1-4-20-x-3-1-2-stainless-steel-carriage-bolts-screws-black-and-hex-nuts-flat-washers-black-round-head-square-neck-304-stainless-steel-18-8-full-thread-coverage-size-1-4-20-x-3-1-2","title":"Glvaner (10 Sets) 1\/4-20 x 3-1\/2\" Stainless Steel Carriage Bolts Screws Black and Hex Nuts \u0026 Flat Washers Black, Round Head Square Neck, 304 Stainless Steel 18-8, Full Thread Coverage - size: 1\/4-20 x 3-1\/2\"","description":"\u003ch3\u003eAbout this item\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePackage Includes: 10 Pcs Carriage Bolts (1\/4-20 x 3-1\/2\") + 10 Pcs Hex Nuts (1\/4\"-20)+ 10 Pcs 1\/4\" Inside Diameter Flat Washers\u003c\/li\u003e\n\u003cli\u003eThread Size: 1\/4-20; Thread Pitch: 20 TPI; Thread Type: Coarse Thread\u003c\/li\u003e\n\u003cli\u003eMaterial: 304 Stainless Steel (A2-70) with durable black coating; Provides enhanced strength and superior corrosion resistance compared to standard stainless steel or zinc-plated fasteners; Features smooth, burr-free surfaces with scratch-resistant protection during handling and installation; Maintains a uniform industrial-grade black finish for professional applications\u003c\/li\u003e\n\u003cli\u003eBolt head diameter: 0.59 inch (15mm); Bolt head height: 0.14 inch (3.68mm); Bolt length (including the square neck): 3.5 inch (89mm)\u003c\/li\u003e\n\u003cli\u003eCarriage bolts feature a domed head with integrated square neck; The square neck mechanically locks into square receiver holes, preventing rotation; The polished dome head creates a semi-recessed installation profile, blending functional grip security with reduced surface protrusion for enhanced safety in woodworking, structural connections, and agricultural equipment applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOverview\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 1\/4-20 x 3-1\/2\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Glvaner\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFastener Type:\u003c\/strong\u003e Carriage Bolt\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Glvaner","offers":[{"title":"Default Title","offer_id":48476819554562,"sku":"B0DBSHY6KQ-size-1-4-20-x-3-1-2","price":16.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0823\/2534\/0418\/files\/41BOHsgI2AL_2b6f8cba-6b01-469f-8289-648afbe36497.jpg?v=1789102878","url":"https:\/\/mrovanta.com\/products\/glvaner-10-sets-1-4-20-x-3-1-2-stainless-steel-carriage-bolts-screws-black-and-hex-nuts-flat-washers-black-round-head-square-neck-304-stainless-steel-18-8-full-thread-coverage-size-1-4-20-x-3-1-2","provider":"MROVanta","version":"1.0","type":"link"}