ASTM A325 A325m A490 A490m Grade 5 8 DIN6914 8.8 10.9 Grade HDG Structural Heavy Hex Bolts and Nuts
Nantong Jinchao Machinery Co., Ltd. , https://www.ntjinzhaomachine.com
A bolt is a form of threaded fastener with an external male thread. Bolts are thus closely related to, and often confused with, screws.Â
Heavy hex structural bolts are designed for steel-to-steel structural connections. Consequently, they are typically very short. The ASTM A325 and A490 specifications cover high strength heavy hex structural bolts from 1/2" to 1-1/2" diameter. These bolts are intended for use in structural connections and it have shorter thread lengths than standard hex bolts. The A325 and A490 specifications are not intended for general applications.
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Products name
Bolts(Hex bolt,Heavy hex bolt,Flange bolt,Carriage bolt,Guardrail Bolt)
Standard:
DIN,ASTM/ANSIÂ JISÂ ENÂ ISO,AS,GB
Material
Stainless 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,
Finishing
Zinc(Yellow,White,Blue,Black),Hop Dip Galvanized(HDG),Black Oxide,
Geomet,Dacroment,anodization,Nickel plated,Zinc-Nickel plated
ProductionÂ
ProcessM2-M24:Cold Froging,M24-M100 Hot Forging,
Machining and CNC for Customized fastener
Customized Products
Lead timeBusy season:15-30days,Slack seaon:10-15days
Stock Products
Steel:4.8Grade DIN6923,8.8Grade 10.9Grade of GB5783 and GB5782
Stainless steel: All DIN Standard stainless steel BoltFree Samples for standard fastener For more information visit:www.hainafastener.com 
