Thread Diameter: 4mm; Thread Length: 20mm; Pitch Size: 0.7mm. Head Diameter: 8mm; Head Height: 3.4mm; Drive Type: Allen Hex Socket 2.5mm; Color: Silver Tone. Package Included: 50 PCS Flat Head Hex Socket Cap Screws (M4 x 20mm) Material: 304 Stainless Steel With High Hardness, Oxidation Resistance, Corrosion Resistance, Heat Resistance And Wear Resistance. It Can Be Used In Harsh Environment And Is Not Easy To Rust. Widely Used In Construction, Engineering, Assembly Cars And Product Manufacturing And Other Precision Machinery Industries. It Is Famous For Its Efficient Application Performance And Durability.

The material is made of high quality 304 stainless steel.
They are known for their reliable rigidity and corrosion resistance.
This type of steel is able to withstand drastic weather and temperature changes including placement Including extremely wet areas.
Widely used in various precision machinery industries, classified instruments, meters, electronic products, household appliances, communication products and so on.

Specification:
Thread Diameter 4 mm
Head Diameter 8 mm
Head Height 3.4 mm
Screw Length 20 mm
Allen Hex Drive 2.5 mm
Material 304 Stainless Steel

Package Included:
50 PCS Flat Head Hex Socket Cap Screws (M4 x 20mm)

Screws Warranty:
If you encounter any problems when purchasing our products, please feel free to contact us by email. We will try our best to solve your problem and give you help. We will give you a full refund for the damaged and lost products in transportation, and you can buy our products with confidence.
Note: Please check the size carefully before purchasing, thanks for your support.
Warning: The product are small parts, keep away from children and kids.