{"id":4539,"date":"2026-03-20T09:34:15","date_gmt":"2026-03-20T01:34:15","guid":{"rendered":"https:\/\/machinedwasher.com\/?post_type=product&#038;p=4539"},"modified":"2026-04-12T03:58:49","modified_gmt":"2026-04-11T19:58:49","slug":"allen-bolt","status":"publish","type":"product","link":"https:\/\/machinedwasher.com\/ru\/products\/allen-bolt\/","title":{"rendered":"Black Oxide Stainless Steel Allen Bolt Corrosion-Resistant Socket Head Cap Screw for Machinery Assembly"},"content":{"rendered":"<h2>What is an Allen Bolt?<\/h2>\n<p class=\"ds-markdown-paragraph\">A fastener with a cylindrical head and a hexagonal socket drive. Designed for high-torque applications and recessed installations where external wrench clearance is limited.<\/p>\n<hr \/>\n<h2>Material<\/h2>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Alloy Steel:<\/strong>\u00a0Most common for high strength; grades 10.9, 12.9 (Cr-Mo).<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Stainless Steel:<\/strong>\u00a0A2 (304) general purpose, A4 (316) marine grade.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Carbon Steel:<\/strong>\u00a0Grades 4.8, 8.8 for general use.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Titanium:<\/strong>\u00a0Grade 5 for aerospace\/motorsports (strength-to-weight ratio).<\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h2>Surface Finishes<\/h2>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Zinc Plating:<\/strong>\u00a0Standard corrosion protection (72h+ salt spray).<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Zinc-Nickel:<\/strong>\u00a0High-performance (144h+ salt spray), low hydrogen embrittlement.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Black Oxide:<\/strong>\u00a0Mild corrosion resistance, cosmetic finish.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Passivation:<\/strong>\u00a0For stainless steel, removes free iron.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>PTFE\/Xylan:<\/strong>\u00a0Low friction, chemical resistant.<\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h2>Specifications<\/h2>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Diameter (Metric):<\/strong>\u00a0M3 to M48 (common: M3, M4, M5, M6, M8, M10, M12).<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Length:<\/strong>\u00a06mm to 280mm+.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Drive Size:<\/strong>\u00a0M3=2.5mm, M4=3mm, M5=4mm, M6=5mm, M8=6mm, M10=8mm, M12=10mm.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Strength Class:<\/strong>\u00a08.8, 10.9, 12.9 (alloy); A2-70, A4-80 (stainless).<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Standards:<\/strong>\u00a0DIN 912, ISO 4762.<\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h2>Primary Applications<\/h2>\n<ul>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Industrial Machinery:<\/strong>\u00a0High-strength assemblies, vibrating equipment.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Automotive:<\/strong>\u00a0Engine, chassis, transmission components.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Electronics:<\/strong>\u00a0Compact devices, control panels.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Marine:<\/strong>\u00a0A4 stainless for boat building, outdoor hardware.<\/p>\n<\/li>\n<li>\n<p class=\"ds-markdown-paragraph\"><strong>Construction:<\/strong>\u00a0Structural steel, architectural metalwork.<\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h2>Best Practice Application Example<\/h2>\n<p class=\"ds-markdown-paragraph\">MRO replaces a worn conveyor clamp bolt with an\u00a0<strong>M8 x 45mm alloy steel, class 10.9 Allen bolt, zinc-nickel plated<\/strong>. Installed in recessed bore using 6mm hex key. Achieves required clamp torque without cam-out. Zinc-nickel provides 144h+ corrosion resistance; 10.9 grade secures joint against vibration, preventing downtime.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone  wp-image-4544\" src=\"https:\/\/machinedwasher.com\/wp-content\/uploads\/2026\/03\/1688_image_share_abeef94842bee9b4c551d8f8ded7a9fa.jpg\" alt=\"\" width=\"308\" height=\"308\" \/><\/p>","protected":false},"excerpt":{"rendered":"<p>Black Oxide Stainless Steel Allen Bolt Corrosion-Resistant Socket Head Cap Screw for Machinery Assembly<\/p>","protected":false},"featured_media":4543,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[3086],"product_tag":[3438,3463,3444,3469,3446,3470,3467,3468,3443,3466,3441,3439,3464,3442,3445,832,625,639,3440,3465],"class_list":{"0":"post-4539","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-machined-bolts","7":"product_tag-allen-bolt","8":"product_tag-allen-bolts","9":"product_tag-button-head-socket-screw","10":"product_tag-button-head-socket-screws","11":"product_tag-captive-screw","12":"product_tag-captive-screws","13":"product_tag-countersunk-allen-bolt","14":"product_tag-countersunk-allen-bolts","15":"product_tag-csk-allen-bolt","16":"product_tag-csk-allen-bolts","17":"product_tag-din-912","18":"product_tag-hex-socket-bolt","19":"product_tag-hex-socket-bolts","20":"product_tag-iso-4762","21":"product_tag-set-screw","22":"product_tag-set-screws","23":"product_tag-socket-head-cap-screw","24":"product_tag-socket-head-cap-screws","25":"product_tag-socket-screw","26":"product_tag-socket-screws","28":"first","29":"instock","30":"shipping-taxable","31":"product-type-simple"},"acf":[],"_links":{"self":[{"href":"https:\/\/machinedwasher.com\/ru\/wp-json\/wp\/v2\/product\/4539","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/machinedwasher.com\/ru\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/machinedwasher.com\/ru\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/machinedwasher.com\/ru\/wp-json\/wp\/v2\/comments?post=4539"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/machinedwasher.com\/ru\/wp-json\/wp\/v2\/media\/4543"}],"wp:attachment":[{"href":"https:\/\/machinedwasher.com\/ru\/wp-json\/wp\/v2\/media?parent=4539"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/machinedwasher.com\/ru\/wp-json\/wp\/v2\/product_brand?post=4539"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/machinedwasher.com\/ru\/wp-json\/wp\/v2\/product_cat?post=4539"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/machinedwasher.com\/ru\/wp-json\/wp\/v2\/product_tag?post=4539"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}