Wholesale Fastener DIN 912/7991/6921 ISO 7380 Stainless Steel/Galvanized/Black Oxide Hex Socket/Allen Cap/Countersunk/Flat/Button/Flange Head Machine Bolt Screw

• Customization: Available
• Material: Carbon Steel, Stainless Steel
• Type: Hex Socket Machine Screw, Allen Screw
• Model NO.: Hex Socket Machine Screw
• Groove: Hex Socket
• Connection: Common Bolt
• Head Style: Cap/Countersunk/Flat/Button/Flange Head
• Standard: DIN, ISO
• Grade: 8.8,10.9,12.9,Carbon Steel A2-50,A2-70,A4-50,A4-7
• Type 2: DIN 7991,DIN 7984,DIN 912,DIN 7380-1, DIN 7380-2
• Type 3: ISO7380,ISO14580
• Finish: Galvanized,Nickel-Plated, Black Oxide, Ruspert,etc
• Thread Standard: Unc/Unf/Unef/Uns/Bsw/Bsf/Metric Coarse/Metric Fine
• Custom Order: Customization by Drawing/Sample
• ODM/OEM: Available
• Service: Custom-Made Service
• Size Standard: Metric/Inch
• Material Test Certificate: Have
• Sample: Samples in Stock Are Free with Freight Collect
• Price Terms: Fob/CFR/CIF/DDP/DAP
• Quality Control: 100% Quality Inspection
• Delivery: 5-15 Days
• Application2: Connection,Fastening
• Transport Package: Bulk Pack Small Boxed
• Specification: M2/M2.5/M3/M4/M5/M6/M8/M10/M12,Length:3mm ~ 120mm
• Trademark: Qewitco
• Origin: China
• HS Code: 731816
• Production Capacity: 10000ton/Year
• Package Size: 25.00cm * 25.00cm * 19.00cm
• Package Gross Weight: 25.000kg

Product Description

Product Description

Hexagon Socket Cap Screws DIN 912

High Strength and Reliability
Precision Threads: Compliant with DIN/ISO standards, strict tolerance (6g grade) ensures fastening stability and vibration resistance.

High-Grade Materials: Supports carbon steel (8.8/10.9/12.9 class) and stainless steel (A2/A4), meeting diverse load requirements (e.g., 12.9 class offers tensile strength up to 1220MPa).

Compact Design and Space Efficiency

Low-Profile Cylinder Head: Compared to hex bolts, the reduced head height suits space-constrained assemblies (e.g., precision instruments, molds).

Hex Socket Drive: Flush design eliminates protrusions, preventing interference with adjacent components.

Superior Torque Transmission

High Hex Socket Load Capacity: Withstands high tightening torque, resistant to stripping (vs. Phillips/slotted screws).
Tamper Resistance: Requires dedicated hex key tools, deterring unauthorized disassembly.

Broad Compatibility 

Global Standardization: Fully interchangeable with ISO 4762 and GB/T 70.1, ensuring seamless global procurement. Full/Partial Thread Options: Adapts to varying thickness requirements (full thread for extended grip, partial thread for alignment).

Diverse Surface Treatments

Corrosion-Resistant Variants: Zinc-plated, zinc flake coating (Dacromet), stainless steel (A2/A4), etc., suitable for environments ranging from general to extreme (e.g., marine, chemical).

Wide-Ranging Applications

Heavy Industry: Machine tools, steel structures, automotive chassis (high-strength demands).
Precision Equipment: Optical instruments, electronics packaging (anti-loosening, low-profile needs).
Outdoor Infrastructure: Bridges, wind turbines (weather-resistant versions).

Specification

Product Type	Hex Socket Button Head Machine Screw
Standard	ISO 7380, DIN 916
Material	Carbon Steel,Stainless Steel
Grade	Carbon Steel:4.8, 8.8,  Stainless Steel:A2-70, A4-80
Size	Dia.:M3 TO M16, Length: 6 TO 400MM
Finish	Galvanized,Nickel-plated, Black Oxide, Ruspert,Customized
ODM/OEM	Available
Price Terms	FOB/CFR/CIF/DDP/DAP
HS Code	731815
Packaging	Bulk Pack | Small Boxed

Product Type	Socket Button Head Screw With Washer / Flange Button Head Socket Cap Screw
Standard	ISO7380-2
Material	Carbon Steel
Size	Dia. – M2.5 / M3 / M4 / M5 / M6 / M8 / M10, Length – 4mm~100mm
Finish	Stainless Steel,Zinc Plated,Galvanized,Nickel-plated, Black Oxide, Ruspert,Customized

Product Type	Hex Socket Countersunk Head Machine Screw
Standard	ISO 10642,DIN 7991
Material	Carbon Steel,Stainless Steel
Grade	4.8, 8.8,10.9, A2-70,A4-80
Size	Dia.:M2,M2.5,M3,M4,M5,M6,M8,M10,M12, Length:3mm~100mm
Finish	Galvanized,Nickel-plated, Black Oxide, Ruspert,Customized
Packaging	Bulk Pack | Small Boxed

Best Competitive Advantages

1.OEM Accepted

2.Strict quality contral

3.Vary competitive price

4.The shortest delivery

5.Best service

6.Customer's design and logo are welcome

Factory And Company Profile

QINGDAO FASTENERS CO.,LTD

Based in Qingdao, China, Qewitco is a British-owned firm with a vast global reach. Since 2004, we've earned a reputation as a top industrial consumables and fastener provider, serving clients across Europe, North America, Southeast Asia, and beyond.

Driven by British management and quality standards, Qewitco excels in supply chain optimization. We source top-grade products from vetted manufacturers in China, Taiwan, Malaysia, Vietnam, and Thailand, ensuring competitive pricing and reliable production.

With over 20 years of industry expertise, we offer tailored, cost-effective solutions to meet each partner's unique needs. Our services include:

Personalized account management to align with your business goals and timelines
Multi-stage quality assurance from raw material inspection to final product testing
Flexible custom procurement for specialized or hard-to-source items
Customizable packaging and logistics solutions to streamline global delivery

For industrial sourcing in China and Southeast Asia, Qewitco is your reliable partner. Our mission is to exceed expectations by ensuring seamless delivery—from production to your warehouse. We merge Western ethics with Asian manufacturing advantages, offering unmatched value and service.

Why Choose Qewitco

1. British-owned enterprise headquartered in Qingdao. Operated under British management system and international quality standards. We combine Western business integrity with competitive Asian manufacturing resources, delivering stable, transparent procurement services to global buyers.

2. Established in 2004 with over 20 years of industrial consumables & fastener experience. Long-term clients spread across Europe, North America, Southeast Asia and other global markets. Proven track record serving international distributors, manufacturers and engineering companies.

3. Multi-stage QA system implemented throughout the whole process: raw material incoming inspection → production follow-up → finished goods testing before shipment. Avoid quality risks for your bulk orders.

4. Flexible customized procurement solution. We source regular standard fasteners as well as specialized, hard-to-source non-standard items to satisfy your unique project demands.

5. Personalized account manager assigned for each partner to align with your business targets & schedules. Custom packaging available; integrated logistics solutions to simplify worldwide delivery from factory straight to your warehouse.

6. Specialized in global supply chain optimization. We integrate multi-supplier resources to simplify your purchasing process, cut sourcing costs and reduce multiple supplier communication workload.

7.Regarding delivery times: We have most sizes in stock. For orders of fewer than 5,000 pieces, the lead time is 5–7 days.

Choose us!
(1)Custom designs available. ODM and OEM are welcome.
(2)We hope to maintain long-term cooperation with every customer, we attach importance to quality and insist on providing high-quality products and services.

Certifications

Company Activity & Exhibition