Hunan Jia Shan Hardware Tech Co., Ltd.
                                                                                                           
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Since 2007
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M4 M5 Hex Socket Head Cap Screw Stainless Steel B8 B8M B8T GR660 A286 - 4.8 to 12.9 Strength Grades

Price Negotiable
Price: 0.255USD-0.365USD
MOQ: 10pcs
Delivery Time: 15days
Product Description
Product Overview
M4 and M5 hex socket head cap screws manufactured from premium stainless steel materials including B8, B8M, B8T, GR660, and A286 grades. These industrial fasteners feature cylindrical heads with internal hex sockets for secure installation in confined spaces.
Technical Specifications
Attribute Value
Product Name Hex Socket Head Cap Screw
Thread Sizes M4, M5
Standards DIN, ASME, ANSI, ISO
Materials Steel, Stainless Steel, Brass, Copper, Titanium Alloy, Plastic
Strength Grades 4.8, 8.8, 10.9, 12.9
Surface Finish Polish, Passivation, Black, Galvanization, Zinc
Certifications ISO9001:2008, ROHS
Origin China
Material Classification
Stainless Steel Variants
  • SUS202 Hex Socket Cylindrical Head Screws (Common Stainless Steel)
  • SUS304 Hex Socket Cylindrical Head Screws
  • SUS316 Hex Socket Cylindrical Head Screws
Strength Grade Options
  • 4.8 Grade Hex Socket Cylindrical Head Screws
  • 8.8 Grade Hex Socket Cylindrical Head Screws
  • 10.9 Grade Hex Socket Cylindrical Head Screws
  • 12.9 Grade Hex Socket Cylindrical Head Screws
Grades 8.8 through 12.9 are classified as high-strength hex socket bolts for demanding applications.
Industrial Applications
Industry Usage
Automotive High-strength applications including automotive engines, heavy-duty machinery, and bridge construction
Mechanical Connection of mechanical parts, circuit boards, engines, transmissions, building structures
Energy Power generation equipment and transmission line connections
Architectural Construction engineering, shipbuilding, and petrochemical industry
Material Properties
Material Properties
Aluminum Excellent thermal and electrical conductivity but naturally soft
Titanium EDM machining compatible, withstands material viscosity
Steel Very strong metal that generates significant heat during processing
Brass High tensile strength and easy to machine, requires slow cutting speed
Design Advantages
Hex socket head cap screws provide superior performance compared to conventional bolts:
  • Thinner flange design allows slight deformation for more secure locking
  • Compatible with special tools for installation in confined spaces
  • Flange plate provides additional fastening support and distribution
  • Safer for use with softer, non-wear-resistant materials by preventing perforation
  • Eliminates re-tightening requirements common with vibration-prone applications
Manufacturing & Quality Assurance
Manufacturing facility producing hex socket head cap screws with precision machinery Quality control inspection of stainless steel bolts using measurement instruments Packaging process for industrial fasteners showing organized bolt arrangement Warehouse storage of various bolt types and sizes in systematic inventory system

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Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Hunan Jia Shan Hardware Tech Co., Ltd.
Location 1st Floor,Building 8 Phase II Factory Building,No.8 Lutian Road,Lugu Base,Lugu Street,Xiangjiang New Area,Hunan Province.Postal Code:410205
Contact Person Tan

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