Basic Product Information
- Product Name: DIN 912 Hex Socket Head Cap Screws (Cup Head Screws)
- Strength Grade: Grade 4.8 (Standard Strength Carbon Steel)
- Standards: DIN 912 / ISO 4762 / GB/T 70.1
- Material: Low-carbon steel / Q235
- Surface Treatment: Electrogalvanized (Blue-White Zinc / Color Zinc / Black Zinc)
- Thread Specifications: Metric Coarse Thread M Series
- Thread Type: Mainly fully threaded; long lengths are partially threaded
Product Features
- Cost-effective and versatile: Grade 4.8 is the most commonly used general-purpose grade, offering low cost and broad applicability to meet everyday light-duty fastening needs.
- Galvanized for rust resistance and durability: The galvanized surface treatment enhances corrosion and rust resistance, making these screws suitable for indoor and general outdoor use with a longer service life.
- DIN standard dimensions for high interchangeability: Manufactured in strict accordance with the DIN 912 standard, ensuring uniform head dimensions, hexagon socket dimensions, and thread precision for global compatibility.
- Hexagon Socket Design for Easy Installation: The cylindrical head with a hexagon socket structure ensures stable torque transmission and prevents slippage, making it ideal for installation in tight spaces.
- Complete Range of Sizes, Ample Stock: A full range of standard sizes from M3 to M24 is available, with lengths ranging from 6mm to 100mm, and bulk supply is available.
Applications
Internal assembly of distribution cabinets: cabinet partitions, cable trays, terminal block brackets, and simple reinforcement of cabinet doors. These components do not bear heavy equipment loads; the hex socket screws are countersunk into the panels, preventing wire abrasion and obstructing wiring.
Enclosure Housings: Mounting of housing panels and cooling fan brackets. Low tightening torque prevents cracking of plastic or puncturing of thin sheets, ensuring a smooth, finished appearance.
Outdoor Low-Voltage Cabinets: Mounting of non-load-bearing side panels and door lock hardware.
Steel Office Furniture: File cabinets, metal cabinets, shelf clip fasteners, and simple reinforcement of table legs.
Custom Home Metal Hardware: Wardrobe hardware connectors, aluminum door frame trim panels, and bathroom shelf base fastening.
Simple Garden Accessories: Flower stands and lightweight fence trim, rust-resistant and suitable for general outdoor humidity.
Note: For auxiliary parts, guards, and enclosures only; never use on main shafts, frames, load-bearing pins, or vibration-prone components.
Equipment safety guards: Belt guards, motor dust covers, and mounting of machine body shielding panels. These serve solely for shielding and protection and are not subjected to tensile or shear forces.
Small conveyor equipment accessories: Side guards for light-duty belt conveyors, simple protective covers for idler rollers, and mounting clips for cable conduits.
Lightweight agricultural machinery accessories: Plastic protective housings for small agricultural tools and mounting brackets for pipes and cables.
Table of Common Sizes for DIN 912 Grade 4.8 Zinc-Plated Screws
1) Key Dimensional Parameters
|
Thread Specifications |
Pitch P |
Head Diameter dk (max) |
Head Height k (max) |
Hexagon Socket Diagonal s |
Hexagon Socket Depth t (min) |
|
M3 |
0.5 |
5.5 |
3.0 |
2.5 |
1.6 |
|
M4 |
0.7 |
7.0 |
4.0 |
3.0 |
2.0 |
|
M5 |
0.8 |
8.5 |
5.0 |
4.0 |
2.5 |
|
M6 |
1.0 |
10.0 |
6.0 |
5.0 |
3.0 |
|
M8 |
1.25 |
13.0 |
8.0 |
6.0 |
4.0 |
|
M10 |
1.5 |
16.0 |
10.0 |
8.0 |
5.0 |
|
M12 |
1.75 |
18.0 |
12.0 |
10.0 |
6.0 |
|
M14 |
2.0 |
21.0 |
14.0 |
12.0 |
7.0 |
|
M16 |
2.0 |
24.0 |
16.0 |
14.0 |
8.0 |
|
M20 |
2.5 |
30.0 |
20.0 |
17.0 |
10.0 |
|
M24 |
3.0 |
36.0 |
24.0 |
19.0 |
12.0 |
2) Common length series (mm)
6, 8, 10, 12, 16, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 80, 90, 100
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