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high-strength Hex head bolts Gr8.8 10.9 12.9

Hex Bolts

high-strength Hex head bolts Gr8.8 10.9 12.9

Ningbo Zhongli bolts manufacturing co.ltd was set up in 2003, we have domestic and export two sales markets. We export high tensile carbon steel hex bolts to EU, Africa, Middle East, Asia market with DIN standards and ANSI standards; we sell to domestic with GB standards.

    Production Capacity

    DIN standard: DIN933 DIN931 DIN960 DIN961 DIN6914
    EN standard: EN15048 EN14399
    ISO standard: ISO4014 ISO4017
    GB standard: GB5783 GB5782 GB5785 GB5786
    Size: M10,M12,M16,M18,M20,M22,M24,M27,M36,M39,M42,M45,M48,M56,M64
    Length: from 20mm to 500mm
    ANSI standard: ASTM A325,UNC,UNF
    Dia: 1/2’’ 5/8’’ 3/4’’ 1’’ 1 1/4’’ 1 1/2’’ 1 3/4’’
    Grade: Gr5,Gr8
    All surface color: Zinc plated, Yellow Galvanized, Hot dip galvanizing

    Factory Display

    high-strength Hex head bolts Gr8ho6

    Cold Forged Machines

    DIN6914 HV 10v3h

    Raw Material of Steel

    Hexagon bolt ISO4017 ZYL Brand full thread (10)gak

    Cold Forged Machines

    Hex Bolt DIN931 grade 88t2

    Annealing Furnace

    Hex socket screws DIN912 grade 8u7d

    Heat Treatment Line

    Packing & Warehouse

    1. 25kgs carton+36 cartons into wooden pallet
    2. small boxes + big carton+ wooden pallet
    3. 15kgs in carton+60 cartons + wooden pallet
    4. Sacks in bulk + pallet
    5. Domestic packing, small boxes into big carton
    Hexagonal socket cap screwsbolts full series (5)r7t
    high-strength Hex head bolts Gr8xux


    1.What is the quality of your products guarantee?
    We have passed ISO9001:2015 Quality Management System Certification, our inspectors test each lot at different steps during production process.
    2.How can I get a quotation?
    Please provide us your details request (standard, logo, size, material, surface treatment, quantity etc.) t leave us an inquiry or email to us and we will response immediately. You can add my wechat/whatsapp: 008615257861940
    3.How to get a free sample?
    We can send you samples for free,but you must pay DHL courier charge
    4.What's the process of order?
    Send us Inquiry →get quotation →confirm orders→ pay deposit→start production
    5.When can l expect the customized product to be finished?
    Sample:7 weeks (Standard).
    Bulk order: 40-50 working days(Standard).
    If you have any other questions, please feel free to contact us!

    Factory Certificates

    Hex socket screws DIN912 grade 8ppr

    Ningbo Zhongli ISO certificate

    Hexagon bolt ISO4017 ZYL Brand full thread (5)6el

    ISO certificate

    Half thread DIN931 Grade 10b45

    ZYL trademark

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