Durable Metric Hexagon Head Carbon Steel Bolt for Fastening

• Customization: Available
• Material: Carbon Steel
• Type: Hexagon Head
• Model NO.: GB 21 - 1976
• Connection: Common Bolt
• Head Style: Round
• Standard: DIN, ANSI, GB, JIS, BSW, GOST
• Grade: 4.8/6.8/8.8/10.9/12.9
• Application: Machinery, Chemical Industry, Environmental, Building
• Finish: Passivation, Zinc Plating, Black, Plainhdg, Yellow
• Standards: DIN912
• Finished: Passivation, Zinc Plating, Black, Plainhdg, Yellow
• Certificate: ISO9001
• Selling Units: Building, Industry, Machinery
• Package: Customer'require
• Delivery Time: 15-30
• Transport Package: Cartons & Pallets or According to Customer''s Requ
• Specification: Allen Bolt
• Trademark: SOKUN
• Origin: Zhejiang
• HS Code: 7318150000
• Production Capacity: 100000000
• Package Size: 10.00cm * 10.00cm * 10.00cm
• Package Gross Weight: 12.000kg

Product Description

Highlights at a glance

·Precision-Made Small Hexagon Head Bolt: GB 21-1976 compliant for stable clamping and vibration-resistant fastening in machinery and light structures.

·Stainless Steel A2/A4 Grade Material: Corrosion-resistant, non-magnetic, suitable for humid, chemical or outdoor use, ensuring long-term integrity.

·Controlled Cold Forging Process: Ensures consistent hex head geometry, accurate metric threading (M1.6-M24), and uniform tensile strength.

·Optimized for Standard Compliance & Interchangeability: “Small hex” head design fits tight spaces, maintains torque efficiency, aligned with ISO/DIN logic.

·Factory-Inspected & Export-Ready: Each batch undergoes thread gauge, hardness, and surface finish checks; supports mixed-specification orders and rapid supply.

Product Description

Competitive advantages

About this supplier

Ningbo Yinzhou Sokun Import And Export Co., Ltd.

Your Trusted Global Partner for Premier OEM Fasteners and Custom Industrial Solutions

Established in 2010, Sokun leads in delivering quality fasteners and components globally. With over a decade's experience and a modern facility, we offer standard and custom solutions for demanding clients.

Our Expertise and Capabilities: A vertically integrated manufacturer covering production, plating/finishing, and export. We meet imperial and metric standards across sizes (M1 to M100) and grades (4.8, 6.8, 8.8, 10.9, 12.9).

Our core manufacturing competencies include:

Standard Fasteners: Screws, Nuts, Washers, Anchors, Pins, Keys, Threaded Rods, and Socket Screws.

Materials & Finishes: High-grade Stainless Steel, Carbon Steel, with durable Zinc, Plain, and Galvanized finishes.

Customization and R&D Strengths (Made-to-Order): Sokun's robust OEM/ODM capability ensures every batch is tailored to your specs. Our R&D excels at engineering unique fasteners. If a product isn't standard, our sales engineers will work with you.

Reliable Production and Service: We ensure reliable delivery times (typically 30-40 days) through efficient management, offering cost savings and consistent quality for our customers.

Production workflow

Customization capabilities

Packing & Delivery

Company Profile

FAQ

Do you support custom and non-standard fasteners?
Yes. We specialize in non-standard fasteners manufactured to drawings, samples, or technical requirements, with tolerance control.

Can you supply mixed fasteners based on a BOM or item list?
Yes. We excel in handling mixed fastener lists for projects. Different items can be combined in one order and shipment.

What information is required for quotation?
Send us your BOM list, drawings (PDF / CAD / STEP), or samples. We review each item and provide a clear quote.

Do you accept small or medium batch orders?
Yes. We support prototype, small, and medium batch production, especially for custom and non-standard fasteners.

How do you ensure quality for mixed and custom orders?
Each item is inspected during production and before packing. Our quality system ensures accuracy for mixed fastener orders.

Can fasteners be packed separately with clear labels?
Yes. Fasteners can be packed by item, size, or project with clear labeling for easy identification.

Do you provide material certificates or inspection records?
Yes. Material certificates and inspection records are available upon request. Our ISO 9001 certified system ensures quality.

How soon can you respond after receiving our list or drawings?
We usually respond with feedback or a quote within 24 hours after receiving your information.