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Jiaxing Haina Fastener Co., Limited

Carriage Bolts, ASTM A307 Carriage Bolt, Galvanized Carriage Bolt manufacturer / supplier in China, offering Galvanized ASTM A307 Grade a Carriage Bolt (ANSI 18.5), China Supplier DIN603 A307 4.8 8.8 Grade Carriage Bolt Stainless Steel 304 316 Round Head Square Neck Carriage Bolt, B7 L7 L7m Black Stud Bolt and 2h Nut Stainless Steel ASTM A193 B8 B8m Ss304 Ss316 Stud Bolt with Heavy Hex Nut (M4-M100) and so on.

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Galvanized ASTM A307 Grade a Carriage Bolt (ANSI 18.5)

FOB Price: US $0.01 / Piece
Min. Order: 1,000 Pieces
Min. Order FOB Price
1,000 Pieces US $0.01/ Piece
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Production Capacity: 500ton/Month
Transport Package: 20-25kg/Carton+900kg Pallet
Payment Terms: L/C, T/T, Western Union, Paypal, Money Gram

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Basic Info
  • Model NO.: M12
  • Type: Mushroom Head
  • Head Style: Round
  • Grade: 4.8
  • Finish: Blue-White Zinc Plated
  • Head Type: Mushroom Round Head
  • Class/Grade: 4.8, 8.8, 10.9
  • Surface Finishing: Galvanizing, Blu-White Zinc Plated
  • Specification: M4-M64
  • HS Code: 731815
  • Material: Carbon Steel
  • Connection: Common Bolt
  • Standard: DIN
  • Application: Machinery
  • Available Material: Carbon Steel
  • International Standard: DIN, ANSI, GB, JIS, Bsw, GOST
  • Used: Hex Bolt-Machinery, Building
  • Trademark: HN
  • Origin: China
Product Description
Galvanized ASTM A307 Grade a Carriage Bolt (ANSI 18.5)

A carriage bolt, coach bolt or round head square neck boltis a form of bolt.

It is distinguished from other bolts by its head: the shank of the bolt is circular for most of its length, as usual, but the portion immediately beneath the head is formed into a square section.This makes the bolt self-locking when placed through a square hole, or a round hole in most wood. This allows the fastener to be installed with only a single tool, a spanner or wrench, working from one side. The head of a carriage bolt is usually a shallow dome. The squared section is of the same size as the diameter of the bolt shank, with a plain unthreaded shank.

Carriage bolts were developed for use through iron strengthening plates on either side of a wooden beam. It is commonplace though to use them into bare timber, the squared section giving enough grip to prevent rotation.

Products name
Blue-white zinc plated/galvanized Carriage Bolts/ cup head bolts/Mushroom Head Square Neck Bolts
MaterialStainless Steel: SS201, SS303, SS304, SS316,SS316L,SS904L,F593
Steel Grade: DIN: Gr.4.6,4.8,5.6,5.8,8.8,10.9,12.9;  SAE: Gr.2,5,8;  ASTM: 307A,307B,A325,A394,A490,A449,
FinishingZinc(Yellow,White,Blue,Black),Hop Dip Galvanized(HDG),Black Oxide,
Geomet,Dacroment,anodization,Nickel plated,Zinc-Nickel plated
M2-M24:Cold Froging,M24-M100 Hot Forging,
Machining and CNC for Customized fastener
Customized Products
Lead time
Busy season:15-30days,Slack seaon:10-15days
Stock ProductsSteel:4.8Grade DIN6923,8.8Grade 10.9Grade of GB5783 and GB5782
Stainless steel: All DIN Standard stainless steel Bolt
Free Samples for standard fastener
For more information

Galvanized ASTM A307 Grade a Carriage Bolt (ANSI 18.5)
Galvanized ASTM A307 Grade a Carriage Bolt (ANSI 18.5)
Galvanized ASTM A307 Grade a Carriage Bolt (ANSI 18.5)

        Professional Manufacturer: All of our Fastener are designed and manufactured according to buyers' specification and performance.
        Quality is guaranteed: Durability testing and critical technical design to enhance fasteners lifetime.
        Cost effective: Competitive prices with factory directly supply
        Perfect fastening solution with 20 years experiences to solve your problem: Wide range of parts selection.
        Customized Ideal Fasteners: customized services according to the samples and drawings offered.
        If you are not sure about what exactly you need -  feel free to contact us anytime and get professional assistance from us.
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