{"id":5753,"date":"2026-05-15T11:50:57","date_gmt":"2026-05-15T03:50:57","guid":{"rendered":"https:\/\/xzfastener.com\/?post_type=product&p=5753"},"modified":"2026-05-15T11:50:58","modified_gmt":"2026-05-15T03:50:58","slug":"din-931-din-933-grade-8-8-black-oxide-carbon-steel-hex-head-bolts-fully-and-partially-threaded","status":"publish","type":"product","link":"https:\/\/xzfastener.com\/vi\/products\/din-931-din-933-grade-8-8-black-oxide-carbon-steel-hex-head-bolts-fully-and-partially-threaded\/","title":{"rendered":"DIN 931 DIN 933 Grade 8.8 Black Oxide Carbon Steel Hex Head Bolts Fully and Partially Threaded"},"content":{"rendered":"

Product Description<\/h2>\n

The DIN 931 DIN 933 Grade 8.8 Black Oxide Carbon Steel Hex Head Bolts<\/strong> are high-strength external hex bolts designed for machinery assembly, steel structure fastening, equipment installation, construction hardware, and general industrial applications.<\/p>\n

These bolts are made from carbon steel<\/strong> and produced in Grade 8.8<\/strong>, providing reliable mechanical strength for demanding fastening work. The product range includes both DIN 931 partially threaded hex head bolts<\/strong> and DIN 933 fully threaded hex head bolts<\/strong>, making it suitable for different assembly requirements.<\/p>\n

The Black Oxide Finish<\/strong> gives the bolts a uniform black appearance and provides basic surface protection. The hex head design allows installation with standard wrenches, sockets, or torque tools.<\/p>\n

\n

Key Features<\/h2>\n
    \n
  • DIN 931 and DIN 933 hex head bolt series<\/li>\n
  • Grade 8.8 high-strength carbon steel<\/li>\n
  • Black Oxide Finish surface treatment<\/li>\n
  • External hex head for easy tightening<\/li>\n
  • DIN 931 partially threaded structure<\/li>\n
  • DIN 933 fully threaded structure<\/li>\n
  • Suitable for machinery, construction, steel structure, and industrial fastening<\/li>\n
  • Used with matching nuts and washers<\/li>\n<\/ul>\n
    \n

    Product Specifications<\/h2>\n
    \n
    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Item<\/th>\nSpecification<\/th>\n<\/tr>\n<\/thead>\n
    Product Name<\/td>\nBlack Oxide Carbon Steel Hex Head Bolt<\/td>\n<\/tr>\n
    Standard<\/td>\nDIN 931 \/ DIN 933<\/td>\n<\/tr>\n
    Strength Grade<\/td>\nGrade 8.8<\/td>\n<\/tr>\n
    Material<\/td>\nCarbon Steel<\/td>\n<\/tr>\n
    Surface Treatment<\/td>\nBlack Oxide Finish<\/td>\n<\/tr>\n
    Color<\/td>\nBlack<\/td>\n<\/tr>\n
    Head Type<\/td>\nHex Head<\/td>\n<\/tr>\n
    Thread Type<\/td>\nMetric Thread<\/td>\n<\/tr>\n
    Thread Design<\/td>\nFully Threaded \/ Partially Threaded<\/td>\n<\/tr>\n
    Fastening Method<\/td>\nUsed with Nut, Washer, or Threaded Hole<\/td>\n<\/tr>\n
    Application<\/td>\nMachinery, Construction, Steel Structure, Equipment Assembly<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \n

    DIN 931 vs DIN 933<\/h2>\n
    \n
    \n\n\n\n\n\n\n
    Standard<\/th>\nThread Structure<\/th>\nProduct Feature<\/th>\n<\/tr>\n<\/thead>\n
    DIN 931<\/td>\nPartially Threaded<\/td>\nHas a smooth shank section and threaded end<\/td>\n<\/tr>\n
    DIN 933<\/td>\nFully Threaded<\/td>\nThread runs along the full bolt body<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    The product image shows a combination of both thread types: shorter bolts with full thread and longer bolts with partial thread. Therefore, DIN 931 \/ DIN 933<\/strong> is a suitable product classification.<\/p>\n

    \n

    Material and Surface Finish<\/h2>\n
    \n
    \n\n\n\n\n\n\n\n\n\n\n
    Item<\/th>\nDescription<\/th>\n<\/tr>\n<\/thead>\n
    Material<\/td>\nCarbon Steel<\/td>\n<\/tr>\n
    Grade<\/td>\n8.8<\/td>\n<\/tr>\n
    Finish<\/td>\nBlack Oxide Finish<\/td>\n<\/tr>\n
    Appearance<\/td>\nBlack surface<\/td>\n<\/tr>\n
    Main Function<\/td>\nProvides dark appearance and basic surface protection<\/td>\n<\/tr>\n
    Recommended Matching Parts<\/td>\nHex nuts, flat washers, spring washers<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    Black Oxide Finish<\/strong> is commonly used for carbon steel fasteners. It gives the bolt a black industrial appearance and helps reduce surface oxidation when used with proper storage and protective oil.<\/p>\n

    \n

    Product Advantages<\/h2>\n
    \n
    \n\n\n\n\n\n\n\n\n\n\n
    Advantage<\/th>\nDescription<\/th>\n<\/tr>\n<\/thead>\n
    High Strength Performance<\/td>\nGrade 8.8 carbon steel provides reliable fastening strength.<\/td>\n<\/tr>\n
    Two Thread Options<\/td>\nDIN 931 partial thread and DIN 933 full thread meet different assembly needs.<\/td>\n<\/tr>\n
    Easy Installation<\/td>\nHex head design works with standard wrenches, sockets, and torque tools.<\/td>\n<\/tr>\n
    Industrial Appearance<\/td>\nBlack oxide finish gives a clean black surface.<\/td>\n<\/tr>\n
    Stable Fastening<\/td>\nSuitable for machinery, equipment, steel structure, and construction use.<\/td>\n<\/tr>\n
    Matching Assembly<\/td>\nCan be used with nuts and washers for complete fastening solutions.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \n

    Common Applications<\/h2>\n
    \n
    \n\n\n\n\n\n\n\n\n\n\n
    Application Area<\/th>\nTypical Use<\/th>\n<\/tr>\n<\/thead>\n
    Machinery Assembly<\/td>\nMachine frame fastening, equipment fixing, mechanical connection<\/td>\n<\/tr>\n
    Steel Structure<\/td>\nSteel plate connection, bracket fixing, frame assembly<\/td>\n<\/tr>\n
    Construction Hardware<\/td>\nMetal support parts, structural components, installation hardware<\/td>\n<\/tr>\n
    Industrial Equipment<\/td>\nProduction equipment, maintenance, replacement fastening<\/td>\n<\/tr>\n
    Automotive & Mechanical Parts<\/td>\nBrackets, supports, chassis-related components<\/td>\n<\/tr>\n
    General Hardware<\/td>\nRepair, installation, and industrial fastening work<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \n

    Product Structure<\/h2>\n
    \n
    \n\n\n\n\n\n\n\n\n\n
    Part<\/th>\nDescription<\/th>\n<\/tr>\n<\/thead>\n
    Hex Head<\/td>\nProvides tool contact surface for tightening<\/td>\n<\/tr>\n
    Bolt Shank<\/td>\nSupports positioning and load transfer<\/td>\n<\/tr>\n
    Threaded Section<\/td>\nEngages with nuts or internal threads<\/td>\n<\/tr>\n
    Black Oxide Layer<\/td>\nCreates black surface appearance<\/td>\n<\/tr>\n
    Carbon Steel Body<\/td>\nProvides strength and durability<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \n

    Installation Notes<\/h2>\n
    \n
    \n\n\n\n\n\n\n\n\n\n
    Step<\/th>\nRecommendation<\/th>\n<\/tr>\n<\/thead>\n
    1. Confirm Standard<\/td>\nChoose DIN 931 for partial thread or DIN 933 for full thread.<\/td>\n<\/tr>\n
    2. Match Thread<\/td>\nUse matching metric nuts or threaded holes.<\/td>\n<\/tr>\n
    3. Use Proper Tool<\/td>\nTighten with a suitable wrench, socket, or torque tool.<\/td>\n<\/tr>\n
    4. Add Washer if Needed<\/td>\nFlat washers help distribute load on the assembly surface.<\/td>\n<\/tr>\n
    5. Store Properly<\/td>\nKeep black oxide bolts dry and protected to reduce rust risk.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \n

    FAQ<\/h2>\n

    1. What is this product?<\/h3>\n

    This product is a DIN 931 \/ DIN 933 Grade 8.8 black oxide carbon steel hex head bolt<\/strong>.<\/p>\n

    2. What is the material?<\/h3>\n

    The material is carbon steel<\/strong>.<\/p>\n

    3. What is the strength grade?<\/h3>\n

    The strength grade is Grade 8.8<\/strong>.<\/p>\n

    4. What is the surface treatment?<\/h3>\n

    The surface treatment is Black Oxide Finish<\/strong>.<\/p>\n

    5. What is the difference between DIN 931 and DIN 933?<\/h3>\n

    DIN 931<\/strong> is partially threaded, with a smooth shank and threaded end.
    DIN 933<\/strong> is fully threaded, with thread along the bolt body.<\/p>\n

    6. Is this a stainless steel bolt?<\/h3>\n

    No. This product is described as carbon steel<\/strong> with Black Oxide Finish<\/strong>.<\/p>\n

    7. What tools are used for installation?<\/h3>\n

    It can be installed with a wrench, socket, or torque tool that matches the hex head size.<\/p>\n

    8. What parts are usually used together with this bolt?<\/h3>\n

    It is commonly used with matching hex nuts, flat washers, and spring washers.<\/p>\n

    9. Where can these bolts be used?<\/h3>\n

    They are suitable for machinery, construction, steel structure, industrial equipment, automotive components, and general fastening applications.<\/p>\n

    \n

    ","protected":false},"excerpt":{"rendered":"

    DIN 931 DIN 933 Grade 8.8 black oxide carbon steel hex head bolts with fully and partially threaded options. High-strength metric fasteners for machinery, construction, steel structure, equipment assembly, and industrial applications.<\/strong><\/p>","protected":false},"featured_media":5754,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"fastener-coating":[34,142],"fastener-material":[42],"fastener-type":[53,474],"product_brand":[],"product_cat":[22],"product_tag":[],"class_list":{"0":"post-5753","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"fastener-coating-blackening","7":"fastener-coating-black-oxide","8":"fastener-material-carbon-steel","9":"fastener-type-bolts","10":"fastener-type-hex-head-bolt","11":"product_cat-standard-fasteners","13":"first","14":"instock","15":"shipping-taxable","16":"product-type-simple"},"acf":[],"_links":{"self":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/product\/5753","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/comments?post=5753"}],"version-history":[{"count":1,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/product\/5753\/revisions"}],"predecessor-version":[{"id":5755,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/product\/5753\/revisions\/5755"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/media\/5754"}],"wp:attachment":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/media?parent=5753"}],"wp:term":[{"taxonomy":"fastener-coating","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/fastener-coating?post=5753"},{"taxonomy":"fastener-material","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/fastener-material?post=5753"},{"taxonomy":"fastener-type","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/fastener-type?post=5753"},{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/product_brand?post=5753"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/product_cat?post=5753"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/product_tag?post=5753"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}