{"id":5724,"date":"2026-05-22T22:22:08","date_gmt":"2026-05-22T14:22:08","guid":{"rendered":"https:\/\/xzfastener.com\/?post_type=product&p=5724"},"modified":"2026-06-02T15:08:00","modified_gmt":"2026-06-02T07:08:00","slug":"bs-4395-high-strength-hex-structural-bolt-black-oxide-carbon-steel-m3-thread-fastener","status":"publish","type":"product","link":"https:\/\/xzfastener.com\/it\/products\/bs-4395-high-strength-hex-structural-bolt-black-oxide-carbon-steel-m3-thread-fastener\/","title":{"rendered":"Fermo strutturale del filo del acciaio al carbonio dell'ossido nero M3 di Bolt strutturale esagonale ad alta resistenza delle BS 4395"},"content":{"rendered":"

Descrizione del prodotto<\/h2>\n

Il BS 4395 High Strength Hex Structural Bolt with Black Oxide Finish<\/strong> is a durable fastening solution designed for machinery assembly, steel structure connections, industrial equipment, automotive components, and general engineering applications. Manufactured from high strength carbon steel<\/strong>, this bolt offers reliable mechanical strength, stable fastening performance, and strong resistance to loosening under demanding working conditions.<\/p>\n

This bolt features a hexagonal head<\/strong>, a smooth shank section, and a precision-machined metric thread. The hex head allows easy tightening with standard spanners, sockets, or power tools. The partially threaded design helps provide better shear resistance and improved structural connection performance compared with fully threaded bolts in certain applications.<\/p>\n

Il Finitura in ossido nero<\/strong> gives the bolt a dark black appearance and provides mild corrosion resistance when combined with protective oil. It is commonly used for high strength bolts, machinery fasteners, industrial hardware, and applications where a black surface finish is preferred.<\/p>\n

\n

Caratteristiche principali<\/h2>\n
    \n
  • BS 4395 style high strength hex structural bolt<\/li>\n
  • Made from high strength carbon steel<\/li>\n
  • Black Oxide Finish for a dark industrial appearance<\/li>\n
  • Hex head design for easy installation<\/li>\n
  • Partial thread design for strong structural fastening<\/li>\n
  • Suitable for machinery, steel structure, equipment, and automotive use<\/li>\n
  • Personalizzazione OEM e ODM disponibile<\/li>\n
  • Available in different sizes, lengths, grades, and packaging options<\/li>\n<\/ul>\n
    \n

    Specifiche del prodotto<\/h2>\n
    \n
    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Articolo<\/th>\nSpecifica<\/th>\n<\/tr>\n<\/thead>\n
    Nome del prodotto<\/td>\nHigh Strength Hex Structural Bolt<\/td>\n<\/tr>\n
    Norma<\/td>\nBS 4395<\/td>\n<\/tr>\n
    Dimensione filettatura<\/td>\nM3 \/ Customized Sizes Available<\/td>\n<\/tr>\n
    Materiale<\/td>\nAcciaio al carbonio<\/td>\n<\/tr>\n
    Trattamento superficiale<\/td>\nFinitura in ossido nero<\/td>\n<\/tr>\n
    Tipo di testa<\/td>\nTesta esagonale<\/td>\n<\/tr>\n
    Tipo di filettatura<\/td>\nFilettatura metrica<\/td>\n<\/tr>\n
    Progettazione del filo<\/td>\nPartial Thread \/ Full Thread Optional<\/td>\n<\/tr>\n
    Grado di forza<\/td>\nGrado ad alta resistenza disponibile<\/td>\n<\/tr>\n
    Colore<\/td>\nNero<\/td>\n<\/tr>\n
    Applicazione<\/td>\nSteel Structure, Machinery, Construction, Equipment Assembly<\/td>\n<\/tr>\n
    Servizio personalizzato<\/td>\nOEM \/ ODM Supported<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \n

    Surface Treatment: Black Oxide Finish<\/h2>\n

    Il Finitura in ossido nero<\/strong> is a common surface treatment for carbon steel and alloy steel fasteners. It creates a black surface layer on the bolt, improving appearance and providing basic anti-rust protection when used with oil or other protective coatings.<\/p>\n

    \n
    \n\n\n\n\n\n\n\n\n\n
    Finitura superficiale<\/th>\nAspetto<\/th>\nResistenza alla corrosione<\/th>\nUso comune<\/th>\n<\/tr>\n<\/thead>\n
    Finitura in ossido nero<\/td>\nBlack \/ Dark Black<\/td>\nBasic, usually with oil protection<\/td>\nHigh strength bolts, machinery fasteners<\/td>\n<\/tr>\n
    Fosfato nero<\/td>\nMatte Black \/ Dark Gray<\/td>\nBetter than plain black oxide in some cases<\/td>\nAutomotive and industrial bolts<\/td>\n<\/tr>\n
    Zincato<\/td>\nSilver \/ White Zinc<\/td>\nGeneral rust protection<\/td>\nStandard hardware fasteners<\/td>\n<\/tr>\n
    Zincato a caldo<\/td>\nGray \/ Rough Silver<\/td>\nStrong outdoor corrosion resistance<\/td>\nStrutture esterne in acciaio<\/td>\n<\/tr>\n
    Finitura semplice<\/td>\nNatural Steel Color<\/td>\nBasso<\/td>\nTemporary or internal applications<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \n

    Vantaggi del prodotto<\/h2>\n
    \n
    \n\n\n\n\n\n\n\n\n\n\n
    Vantaggio<\/th>\nDescrizione<\/th>\n<\/tr>\n<\/thead>\n
    High Strength Material<\/td>\nCarbon steel provides reliable mechanical strength for heavy-duty fastening.<\/td>\n<\/tr>\n
    Black Surface Appearance<\/td>\nBlack oxide finish gives the bolt a clean, dark, industrial look.<\/td>\n<\/tr>\n
    Installazione semplice<\/td>\nHex head design allows quick tightening with standard tools.<\/td>\n<\/tr>\n
    Strong Structural Connection<\/td>\nPartial thread design helps improve shear resistance in suitable applications.<\/td>\n<\/tr>\n
    Customizable Production<\/td>\nSize, length, thread, grade, finish, and packaging can be customized.<\/td>\n<\/tr>\n
    Cost-Effective Fastener<\/td>\nCarbon steel construction offers a good balance between strength and price.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \n

    Applicazioni comuni<\/h2>\n

    Il BS 4395 High Strength Hex Structural Bolt with Black Oxide Finish<\/strong> is widely used in industrial and mechanical fastening systems.<\/p>\n

    \n
    \n\n\n\n\n\n\n\n\n\n\n
    Industria<\/th>\nApplicazione tipica<\/th>\n<\/tr>\n<\/thead>\n
    Struttura in acciaio<\/td>\nSteel frame assembly, beam connection, bracket fixing<\/td>\n<\/tr>\n
    Macchinari<\/td>\nMachine body assembly, equipment installation, mechanical connection<\/td>\n<\/tr>\n
    Costruzione<\/td>\nSupport frames, metal plates, structural components<\/td>\n<\/tr>\n
    Automobilistico<\/td>\nChassis parts, brackets, engine-related components<\/td>\n<\/tr>\n
    Attrezzature industriali<\/td>\nProduction equipment, machine base, support systems<\/td>\n<\/tr>\n
    General Engineering<\/td>\nRepair, maintenance, custom metal fabrication<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \n

    Material and Custom Options<\/h2>\n
    \n
    \n\n\n\n\n\n\n\n\n\n\n\n
    Articolo personalizzato<\/th>\nOpzioni disponibili<\/th>\n<\/tr>\n<\/thead>\n
    Materiale<\/td>\nAcciaio al carbonio, acciaio legato, acciaio inossidabile<\/td>\n<\/tr>\n
    Dimensioni<\/td>\nM3, M4, M5, M6, M8, M10, M12, M16, M20, Custom<\/td>\n<\/tr>\n
    Lunghezza<\/td>\nAccording to customer drawing or sample<\/td>\n<\/tr>\n
    Tipo di filettatura<\/td>\nCoarse Thread, Fine Thread, Full Thread, Partial Thread<\/td>\n<\/tr>\n
    Finitura superficiale<\/td>\nBlack Oxide, Black Phosphate, Zinc Plated, HDG, Plain<\/td>\n<\/tr>\n
    Grado di forza<\/td>\n8.8, 10.9, 12.9, Grado personalizzato<\/td>\n<\/tr>\n
    Imballaggio<\/td>\nBulk Carton, Small Box, Plastic Bag, Pallet, Customized Packing<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \n

    Why Choose Black Oxide Hex Structural Bolts?<\/h2>\n

    Black oxide hex bolts are commonly selected when customers need a dark surface finish<\/strong>, good dimensional accuracy, and reliable fastening performance. Compared with thick coatings such as hot dip galvanizing, black oxide creates a thinner surface layer, which helps maintain better thread accuracy.<\/p>\n

    For high strength bolts, black oxide is often used together with protective oil to reduce surface oxidation during storage and transportation. It is suitable for indoor machinery, equipment assembly, automotive parts, and general industrial applications.<\/p>\n

    \n

    Controllo qualit\u00e0<\/h2>\n
    \n
    \n\n\n\n\n\n\n\n\n\n\n
    Elemento di ispezione<\/th>\nScopo<\/th>\n<\/tr>\n<\/thead>\n
    Ispezione dimensionale<\/td>\nCheck head size, shank diameter, length, and thread length<\/td>\n<\/tr>\n
    Prova del calibro della filettatura<\/td>\nEnsure thread accuracy and nut compatibility<\/td>\n<\/tr>\n
    Prova di durezza<\/td>\nVerify mechanical strength and material performance<\/td>\n<\/tr>\n
    Prova di trazione<\/td>\nConfirm load-bearing capacity<\/td>\n<\/tr>\n
    Ispezione della superficie<\/td>\nCheck black oxide appearance and finish quality<\/td>\n<\/tr>\n
    Ispezione dell'imballaggio<\/td>\nEnsure safe packing for storage and shipping<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
    \n

    FAQ<\/h2>\n

    1. What is a Black Oxide Finish?<\/h3>\n

    Black oxide is a chemical surface treatment that forms a black layer on carbon steel or alloy steel fasteners. It improves appearance and provides basic corrosion resistance, especially when combined with protective oil.<\/p>\n

    2. Is Black Oxide better than zinc plating?<\/h3>\n

    Black oxide provides a dark appearance and better dimensional accuracy because the coating layer is very thin. Zinc plating usually offers better corrosion resistance, while black oxide is more commonly used for high strength and machinery fasteners.<\/p>\n

    3. Can black oxide bolts be used outdoors?<\/h3>\n

    Black oxide bolts are mainly recommended for indoor or low-corrosion environments. For outdoor, humid, or marine environments, hot dip galvanized, zinc plated, or stainless steel bolts are usually better choices.<\/p>\n

    4. What material is this bolt made from?<\/h3>\n

    Questo bullone \u00e8 composto da high strength carbon steel<\/strong>. Alloy steel and stainless steel versions can also be supplied according to customer requirements.<\/p>\n

    5. Is this bolt fully threaded or partially threaded?<\/h3>\n

    Il prodotto mostrato \u00e8 un bullone esagonale parzialmente filettato<\/strong>. Full thread versions can also be customized if required.<\/p>\n

    6. Can you supply matching nuts and washers?<\/h3>\n

    Yes. We can supply matching hex nuts, heavy hex nuts, flat washers, spring washers, and complete bolt-nut-washer assemblies.<\/p>\n

    7. Can the size be customized?<\/h3>\n

    Yes. We can customize size, length, thread pitch, material, strength grade, surface treatment, and packaging according to drawings, samples, or customer specifications.<\/p>\n

    8. What information is needed for a quotation?<\/h3>\n

    Please provide the bolt size, length, thread type, material, grade, surface finish, quantity, packaging requirement, and destination port or delivery address.<\/p>\n

    \n

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

    Bullone strutturale esagonale ad alta resistenza BS 4395 realizzato in acciaio al carbonio con ossido nero con filettatura metrica M3. Elementi di fissaggio industriali durevoli per macchinari, strutture in acciaio, edilizia, parti automobilistiche e assemblaggio di apparecchiature.<\/strong><\/p>","protected":false},"featured_media":5725,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"fastener-coating":[142,34,150],"fastener-material":[42],"fastener-type":[53,474],"product_brand":[],"product_cat":[22,29],"product_tag":[],"class_list":{"0":"post-5724","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"fastener-coating-black-oxide","7":"fastener-coating-blackening","8":"fastener-coating-custom-color-coating","9":"fastener-material-carbon-steel","10":"fastener-type-bolts","11":"fastener-type-hex-head-bolt","12":"product_cat-standard-fasteners","13":"product_cat-various-coated-fasteners","15":"first","16":"instock","17":"shipping-taxable","18":"product-type-simple"},"acf":[],"_links":{"self":[{"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/product\/5724","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/comments?post=5724"}],"version-history":[{"count":1,"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/product\/5724\/revisions"}],"predecessor-version":[{"id":5726,"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/product\/5724\/revisions\/5726"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/media\/5725"}],"wp:attachment":[{"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/media?parent=5724"}],"wp:term":[{"taxonomy":"fastener-coating","embeddable":true,"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/fastener-coating?post=5724"},{"taxonomy":"fastener-material","embeddable":true,"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/fastener-material?post=5724"},{"taxonomy":"fastener-type","embeddable":true,"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/fastener-type?post=5724"},{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/product_brand?post=5724"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/product_cat?post=5724"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/xzfastener.com\/it\/wp-json\/wp\/v2\/product_tag?post=5724"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}