Stainless Steel Hexagon Socket Head Cap Screw（Compliant with ISO 4762）

Parameters

Standard: DIN 912

Material: Aluminum Alloy

Product Grade: Grade A

Head Shape: hexagon socket cap head with knurling

Applicable Scenarios: Communications Construction New Energy Petrochemical Decoration Precision Machinery Electronic Equipment Medical Devices Rail Transit Automotive Industry Engineering Machinery Agricultural Machinery Mechanical Industry

Surface Treatment: Bright Cleaning

Strength Grade: 6.8

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*The picture only shows the product shape; please refer to the actual product for details.

Size(mm): M4 M5 M6 M8

Nominal Length (mm): 12 16 20 25

Width Across Flats (mm): 3.0 4 5 6

Thread Pitch (mm): 0.7 0.8 1 1.25

Global Certifications	-Quality Management: IATF16949 (Automotive Specific), ISO9001 -Environmental & Occupational Health: ISO14001,ISO45001 -Industry Specific: PED-EN10204, CPREN14399, EN15048, AD2000
Main Materials	– Stainless Steel: 304 (General Corrosion Resistance), 316 (Enhanced Corrosion Resistance, suitable for marine/chemical applications) – Alloy Steel (High-strength material, suitable for heavy-duty scenarios such as construction machinery and key automotive components) – Carbon Steel (Cost-effective, suitable for general mechanical connection scenarios with no special requirements for corrosion resistance or high strength)
Surface Treatment	– Basic Rust Prevention: Ordinary, Black Oxide, Zinc Plating, Hot-dip Galvanizing – High-end Functions: PTFE Coating, Passivation, Nickel Plating, Chrome Plating, Copper Plating, Delta/Daromet, Thread Locking Agent, Wax Coating, Anodizing
Product Range (Fasteners)	– Standard: Bolts (Hexagon, High-strength, Carriage), Nuts (Hexagon, Locking, Flange), Washers (Flat, Spring, Combination), Screws (Self-tapping, Machine, Socket) – Non-standard: Customized parts according to drawings/samples – Industry-specific: High-strength Automotive Bolts, Energy-resistant Fasteners, Infrastructure Anchors
Main Production Equipment	-CNC Machining Centers, Cold Heading Machines, Heat Treatment Equipment, Hot Forging Machines, Thread Rolling Machines (covering forming, strengthening, thread processing, meeting mass production and precision customization needs)
Testing Equipment	– Mechanical Properties: Tensile Testing Machine, Hardness Tester, Torque Testing Machine, Impact Testing Machine, Fatigue Testing Machine, Universal Testing Machine (UTM) – Environmental Adaptability: Salt Spray Test Chamber, Vibration Testing Machine – Precision & Composition: Coordinate Measuring Machine (CMM), Optical Sorter, Spectrometer, X-ray Fluorescence Analyzer (XRF) – Regular Dimensions: Micrometer, Caliper, Thread Gauge, Profile Projector, Go/No-go Gauge
Packaging Solutions	– Standard: Carton + Pallet (suitable for sea/land transportation, convenient for warehouse stacking) -Custom Services: Small Packaging (bag/box), Printed Packaging, Anti-damage Cushioning Packaging (according to customer needs)
Technical Services	– Material Selection Recommendations (based on application scenarios) – Non-standard Fastener Design Support (optimizing connection solutions, reducing costs) – Provide Quality Reports (material analysis, salt spray testing, etc.)

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Xintang Town, Zengcheng District, Guangzhou City, Guangdong Province, China

Stainless Steel Hexagon Socket Head Cap Screw（Compliant with ISO 4762）

Production Process · Precision in Every Step

BOSHI- Fasteners Manufacturer and Supplier

Our Address

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