1 lb. Bag - 36 Bolts
Diameter: 6mm
Length: 45mm
Material: Steel
Finish: Black Phosphate
Head Style: Hex Washer (#10 Wrench)
Thread Size: 1.0mm (Coarse)
Thread Length: 18mm
Hardness: Class 10.9
Type: Flange Bolt
Specifications: DIN 6921
Black Phosphate Class 10.9 Steel Hex Washer Head Flange Bolts are high-strength fasteners with a built-in washer-like flange under the head. These bolts are made of alloy steel, quenched and tempered, with a minimum tensile strength of 1,040 MPa. They feature a black phosphate coating for improved corrosion resistance.
Key characteristics include:
- Also known as hex flange screws, hex washer bolts, or frame bolts
- Flange under the head acts as a washer, increasing bearing surface and distributing load
- Head style: Non-serrated hex washer head
- Thread type: Coarse thread, right-hand direction
These bolts are commonly used in automotive applications, particularly on truck frames, due to their high strength and integrated washer feature. The black phosphate coating provides enhanced corrosion protection, making them suitable for various industrial applications requiring durable fasteners.