Black Oxide Carbon Steel DIN 7991 Flat Countersunk Socket Head Bolt - M3 to M72 Size Range, Class 8.8 & 12.9 Grades
Price:
USD0.1-1/PC
MOQ:
1 piece
Delivery Time:
8-20days
Brand:
FLRS or OEM
Product Description
Product Overview
High-strength black oxide carbon steel flat countersunk socket head bolts manufactured to DIN 7991 standard. Available in multiple grades including Class 8.8 and 12.9 for demanding industrial applications.
Technical Specifications
| Parameter | Specifications |
|---|---|
| Standard | DIN 7991 |
| Material Options | Carbon Steel, Stainless Steel, Alloy Steel, Aluminum |
| Strength Grades | 4.8, 6.8, 8.8, 10.9, 12.9 |
| Size Range | M3-M72 (10mm-500mm length) |
| Thread Options | Half Thread, Full Thread |
| Available Finishes | HDG, Dacromet, Sherardizing, Zinc Plated, Black Oxide, Plain |
Key Features
- High tensile strength options up to 12.9 grade
- Corrosion-resistant black oxide finish
- Countersunk flat head design for flush mounting
- Socket head drive for high torque applications
- Custom sizing available from M3 to M72 diameters
- Multiple material options for various environmental conditions
Application Areas
- Building and construction projects
- Machinery and equipment assembly
- Furniture manufacturing
- Electric power fittings
- Structural steel applications
- Oil & gas industry equipment
- Wind energy systems
- Automotive and mechanical machinery
Product Images
Customization & Standards
Available in standard and non-standard sizes with support for custom requirements. Compliant with multiple international standards including ANSI/ASME, JIS, EN, DIN, BS, GB, SH, HG, IFI, and ISO.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Shaanxi Flourish Industrial Co., Ltd.
Location
No.3939 Eurasian Ave., Chanba Ecological District, Xi'an, China
Contact Person
Fiona Hou