{"id":1111,"date":"2020-01-07T12:31:20","date_gmt":"2020-01-07T12:31:20","guid":{"rendered":"https:\/\/resources.tannerbolt.com\/articles-what-are-hex-cap-screws\/"},"modified":"2024-02-16T16:24:43","modified_gmt":"2024-02-16T16:24:43","slug":"articles-what-are-hex-cap-screws","status":"publish","type":"post","link":"https:\/\/resources.tannerbolt.com\/articles-what-are-hex-cap-screws\/","title":{"rendered":"What are Hex Cap Screws?"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-6314\" style=\"margin-left: auto; margin-right: auto; display: block;\" src=\"https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws-group.jpg\" sizes=\"(max-width: 1000px) 100vw, 1000px\" srcset=\"https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws-group.jpg 1000w, https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws-group-300x60.jpg 300w, https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws-group-768x154.jpg 768w\" alt=\"hex-cap-screws-group\" width=\"1000\" height=\"200\" \/><\/p>\n<p><a href=\"https:\/\/www.tannerbolt.com\/products\/FASTENERS\/04@@2e%20HEX%20HEAD%20CAP%20SCREWS%20PLATED.aspx\">Hex Cap Screws<\/a> are fasteners featuring a hexagonal, six-sided, head with a washer face on the bearing surface and a chamfered point. Commonly used in construction and machine assemblies, hex cap screws are one of the most common fasteners used on the jobsite today. Specifications for <a href=\"https:\/\/www.tannerbolt.com\/products\/FASTENERS\/04@@2e%20HEX%20HEAD%20CAP%20SCREWS%20PLATED.aspx\">hex cap screws<\/a> are described under the ASME B18.2.1-1996 standard. Hex cap screw specifications include ASTM A449 &amp; SAE J429: Grade 2, Grade 5 &amp; Grade 8.<\/p>\n<p><!--more--><\/p>\n<h2>Hex Cap Screws are NOT Hex Bolts<img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-6216\" style=\"float: right;\" src=\"https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws-1.jpg\" sizes=\"(max-width: 200px) 100vw, 200px\" srcset=\"https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws.jpg 200w, https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws-150x150.jpg 150w, https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws.jpg 160w, https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws.jpg 320w\" alt=\"hex-cap-screws\" width=\"200\" height=\"200\" \/><\/h2>\n<p>Mistaking a hex cap screw for a hex bolt is a very common occurrence, but the two fasteners differ in many ways, including the way they are used and installed.<\/p>\n<ul>\n<li>Hex bolts are installed by turning a nut to tighten the fastener<\/li>\n<li>Hex cap screws are installed into tapped holes by turning the head to assemble and tighten<\/li>\n<li>Hex cap screws feature a washer face on the bearing surface and the chamfered point<\/li>\n<li>Hex bolts have neither the washer face or chamfered point<\/li>\n<li>Hex cap screws are commonly used for precision applications where a tight tolerance is required<\/li>\n<li>Hex bolts are often used in the construction industry where the mechanical properties are more important than dimensional tolerances<\/li>\n<\/ul>\n<h2>Grades of Hex Cap Screws<\/h2>\n<h3><a href=\"https:\/\/www.tannerbolt.com\/products\/FASTENERS\/04@@2e%20HEX%20HEAD%20CAP%20SCREWS%20PLATED\/01@@2e%20HEX%20GRADE%202%20ZINC%20PLATED\/01@@2e%20COARSE%20THREAD.aspx\">Grade 2 Hex Cap Screws<img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-6215\" style=\"float: right;\" src=\"https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws3-1.jpg\" sizes=\"(max-width: 200px) 100vw, 200px\" srcset=\"https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws3.jpg 200w, https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws3-150x150.jpg 150w, https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws3.jpg 160w, https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws3.jpg 320w\" alt=\"hex-cap-screws3\" width=\"200\" height=\"200\" \/><\/a><\/h3>\n<ul>\n<li>Often referred to as \u201chardware\u201d quality, these fasteners are typically made of low carbon steel<\/li>\n<li>Grade 2 fasteners are ideally suited for holding wood pieces together (in combination with appropriate nuts and washers) or general hardware use where higher strength is not required<\/li>\n<li>There is no grade marking on the head of Grade 2 fasteners<\/li>\n<li>Many manufacturers will put a distinguishing company identification on the head<\/li>\n<\/ul>\n<h3><a href=\"https:\/\/www.tannerbolt.com\/products\/FASTENERS\/04@@2e%20HEX%20HEAD%20CAP%20SCREWS%20PLATED\/02@@2e%20HEX%20GRADE%205%20ZINC%20PLATED.aspx?category=Hex+Cap+Screws%2c+Grade+5+Zinc+Plated\">Grade 5 Hex Cap Screws<\/a><\/h3>\n<ul>\n<li>Tempered Grade 5 fasteners are made of medium carbon steel<\/li>\n<li>Grade 5 fasteners are quenched and tempered for the additional strength necessary for most automotive uses and other applications where strength is a moderate concern<\/li>\n<li>The grade marking on the head of a Grade 5 fastener is three equally-spaced lines coming out from the center of the head<\/li>\n<li>Manufacturers\u2019 identifications are added for traceability<\/li>\n<\/ul>\n<h3><a href=\"https:\/\/www.tannerbolt.com\/products\/FASTENERS\/04@@2e%20HEX%20HEAD%20CAP%20SCREWS%20PLATED\/03@@2e%20HEX%20GRADE%208%20YELLOW.aspx?category=Hex+Cap+Screws%2c+Grade+8+Yellow+Zinc+Plated\">Grade 8 Hex Cap Screws<img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-6217\" style=\"float: right;\" src=\"https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws7.jpg\" sizes=\"(max-width: 200px) 100vw, 200px\" srcset=\"https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws7-1.jpg 200w, https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws7-150x150.jpg 150w, https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws7.jpg 160w, https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws7.jpg 320w\" alt=\"hex-cap-screws7\" width=\"200\" height=\"200\" \/><\/a><\/h3>\n<ul>\n<li>Tempered Grade 8 fasteners are manufactured of medium carbon alloy steel for the most demanding applications<\/li>\n<li>Grade 8 fasteners are then quenched and tempered to superior strength and hardness qualities<\/li>\n<li>The grade marking on a Grade 8 fastener is six equally-spaced lines coming out from the center of the head<\/li>\n<li>Manufacturers\u2019 identifications are added for traceability<\/li>\n<\/ul>\n<h3>18-8 Stainless Steel Hex Cap Screws<\/h3>\n<ul>\n<li>The most popular type of stainless used in the production of fasteners<\/li>\n<li>The composition is approximately 18% chromium and 8% nickel, thus the name 18-8<\/li>\n<li>18-8 stainless steel consists of several grades of stainless in this classification including 302, 303, 304 and 305<\/li>\n<li>All of these grades of 18-8 stainless steel have good strength and corrosion resistance<\/li>\n<\/ul>\n<h3><a href=\"https:\/\/www.tannerbolt.com\/products\/FASTENERS\/27@@2e%20STAINLESS%20STEEL\/01@@2e%20HEX%20HEAD%20CAP%20SCREWS-304%20316\/1403@@2e%20316%20STAINLESS%20STEEL.aspx\">316 Stainless Steel Hex Cap Screws<img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-6218\" style=\"float: right;\" src=\"https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws6.jpg\" sizes=\"(max-width: 200px) 100vw, 200px\" srcset=\"https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws6-1.jpg 200w, https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws6-150x150.jpg 150w, https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws6.jpg 160w, https:\/\/resources.tannerbolt.com\/wp-content\/uploads\/2024\/01\/hex-cap-screws6.jpg 320w\" alt=\"hex-cap-screws6\" width=\"200\" height=\"200\" \/><\/a><\/h3>\n<ul>\n<li>316 stainless steel is more corrosion resistant than 18-8, but also more expensive<\/li>\n<li>316 stainless steel is composed of approximately 18% chromium and 12% nickel with the addition of 2% to 4% molybdenum<\/li>\n<li>316 stainless steel also maintains its strength at higher temperatures than 18-8<\/li>\n<\/ul>\n<h3>410 Stainless Steel Hex Cap Screws<\/h3>\n<ul>\n<li>410 stainless steel has approximately 12% chromium with no nickel<\/li>\n<li>410 stainless steel is not very corrosion resistant and is magnetic, but it can be heat-treated to become harder<\/li>\n<\/ul>\n<h2>Additional\u00a0Hex Cap Screw Technical Specification Data Available<\/h2>\n<p>For a more in-depth look at hex cap screws, please visit our <a href=\"https:\/\/www.tannerbolt.com\/content.aspx?file=customerpages\/HEX-CAP-SCREWS-TECH-DATA.HTM\">Hex Cap Screw Technical Specification Data page<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hex Cap Screws are fasteners featuring a hexagonal, six-sided, head with a washer face on the bearing surface and a chamfered point. Commonly used in construction and machine assemblies, hex cap screws are one of the most common fasteners used on the jobsite today. Specifications for hex cap screws are&#8230;<\/p>\n","protected":false},"author":2,"featured_media":2643,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"_links":{"self":[{"href":"https:\/\/resources.tannerbolt.com\/wp-json\/wp\/v2\/posts\/1111"}],"collection":[{"href":"https:\/\/resources.tannerbolt.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/resources.tannerbolt.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/resources.tannerbolt.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/resources.tannerbolt.com\/wp-json\/wp\/v2\/comments?post=1111"}],"version-history":[{"count":5,"href":"https:\/\/resources.tannerbolt.com\/wp-json\/wp\/v2\/posts\/1111\/revisions"}],"predecessor-version":[{"id":2670,"href":"https:\/\/resources.tannerbolt.com\/wp-json\/wp\/v2\/posts\/1111\/revisions\/2670"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/resources.tannerbolt.com\/wp-json\/wp\/v2\/media\/2643"}],"wp:attachment":[{"href":"https:\/\/resources.tannerbolt.com\/wp-json\/wp\/v2\/media?parent=1111"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/resources.tannerbolt.com\/wp-json\/wp\/v2\/categories?post=1111"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/resources.tannerbolt.com\/wp-json\/wp\/v2\/tags?post=1111"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}