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Zinc Plated DIN251 8.8 Hexagon Socket Flange Head Allen Bolt
Zinc Plated DIN251 8.8 Hexagon Socket Flange Head Allen Bolt
Zinc Plated DIN251 8.8 Hexagon Socket Flange Head Allen Bolt
Zinc Plated DIN251 8.8 Hexagon Socket Flange Head Allen Bolt
Zinc Plated DIN251 8.8 Hexagon Socket Flange Head Allen Bolt
Zinc Plated DIN251 8.8 Hexagon Socket Flange Head Allen Bolt
Specifications
Brand Name :
YB
Model Number :
DIN251
Certification :
ISO9001
Place of Origin :
ZheJiang,China
MOQ :
10000
Price :
Negontiation
Payment Terms :
T/T
Supply Ability :
5000Tons/year
Delivery Time :
7-25Days
Packaging Details :
5000-10000/box
Material :
Carbon Steel
Grade :
8.8
Finish :
Zinc
Color :
Blue
Standard :
DIN251
Head Type :
Hex Socket Flange Bolt
Description

Zinc Plated DIN251 8.8 Hexagon Socket Flange Head Machine Bolt


Product Description

Standard:DIN251


DIN 251 hexagon socket flange head machine screws are German DIN standard specialized fasteners engineered for industrial mechanical fastening, renowned for their integrated anti-loosening structure, high connection stability and standardized dimensional design. As a mainstream choice for medium and high-load fastening scenarios, this type of machine screw features a one-piece hexagon socket drive and flange head structure, eliminating the need for additional washers in assembly. Paired with the industry-common 8.8 grade mechanical performance and zinc-plated anti-corrosion treatment, DIN 251 screws are widely adopted in various industrial assembly fields with strict requirements for connection firmness and installation efficiency.


Core Features:

  • Integrated structure saves assembly time: The flange head replaces the traditional flat washer and spring washer combination, reducing the number of assembly parts and improving fastening efficiency;
  • Strong anti-loosening performance: The flange surface is designed with anti-slip serrations (optional for standard models), which can effectively prevent the screw from loosening due to mechanical vibration, ensuring long-term connection stability;
  • Wide compatibility: Standardized DIN 251 dimensions cover mainstream metric thread specifications (M3-M24), adapting to the fastening needs of different industrial workpieces and equipment;
  • Easy operation: The hexagon socket drive is compatible with universal standard hexagon socket wrenches, with no special tool requirements, and is suitable for narrow and confined installation spaces.


Application Scenarios:

DIN 251 8.8 grade zinc-plated hexagon socket flange head machine screws are a versatile industrial fastener, widely used in automobile manufacturing, construction machinery, machine tool equipment, sheet metal cabinet production, electrical and electronic equipment, hydraulic and pneumatic components, and automation equipment assembly. Typical application scenarios include engine component fastening, gearbox assembly, sheet metal cabinet connection, hydraulic cylinder fixed installation, electrical panel mounting, and engineering machinery structural part fastening. It is the preferred fastener for mechanical fastening scenarios that require high connection stability, anti-loosening performance and assembly efficiency, and is favored by industrial manufacturers for its standardized design and reliable performance.

Technical Specifications

d
M3
M4
M5
M6
M8
M10
P
0.5
0.7
0.8
1
1.25
1.5
dk
min
5.2
6.78
7.72
9.7
12.7
15.7
max
5.5
7
8
10
13
16
k
min
2.75
3.82
4.82
5.7
7.7
9.7
max
3
4
5
6
8
10
dc
min
6.7
8.8
10.7
12.3
15.7
19.7
max
7
9
11
12.6
16
20
c
min
0.8
1
1
1.3
1.8
2
max
1
1.2
1.2
1.5
2
2.2
s
2.5
3
4
5
6
8
t
min
1.3
2
2.5
3
4
5
Teeth
18
18
20
24
24
30

Zinc Plated DIN251 8.8 Hexagon Socket Flange Head Allen Bolt

Packaging

Zinc Plated DIN251 8.8 Hexagon Socket Flange Head Allen Bolt Zinc Plated DIN251 8.8 Hexagon Socket Flange Head Allen Bolt Zinc Plated DIN251 8.8 Hexagon Socket Flange Head Allen Bolt
Carton Packaging Outer Cartonbox Packaging Pallet Packaging
Bolts are packed in neutral packaging boxes, with standard quantities arranged in small cartons. The exact number of units per carton will be confirmed with the customer to align with their specific requirements. Customized packaging configurations are available upon request. The small cartons are then consolidated into larger master cartons for secure transportation and storage. The quantity per master carton can be customized based on client specifications or aligned with standard logistical requirements. The palletized units are securely wrapped with waterproof film and reinforced with packaging straps. Customer-specific shipping marks or labels are affixed to each pallet, ensuring clear identification and compliance with logistics requirements. This final packaging stage guarantees weather-resistant protection and stability during transportation.


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Zinc Plated DIN251 8.8 Hexagon Socket Flange Head Allen Bolt

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Product Detail
Brand Name :
YB
Model Number :
DIN251
Certification :
ISO9001
Place of Origin :
ZheJiang,China
MOQ :
10000
Price :
Negontiation
Contact Supplier
Zinc Plated DIN251 8.8 Hexagon Socket Flange Head Allen Bolt
Zinc Plated DIN251 8.8 Hexagon Socket Flange Head Allen Bolt
Zinc Plated DIN251 8.8 Hexagon Socket Flange Head Allen Bolt

NINGBO YONGBIAO FASTENER CO.,LTD

Verified Supplier
2 Years
zhejiang, ningbo
Since 2012
Business Type :
Manufacturer, Exporter, Trading Company
Main Products :
Pan Head Screw, Bugle Head Screw, Self Tapping Screw
Total Annual :
5000000-6000000
Employee Number :
45~53
Certification Level :
Verified Supplier
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