Material: It Is Made Of High Quality 12.9 Grade Alloy Steel, And The Surface Is Treated With Black Oxide. They Have Excellent Corrosion Resistance, Firmness, Wear Resistance And Low Temperature Resistance. Widely Used In Engineering, Assembly Cars And Product Manufacturing And Other Precision Machinery Industries. It Is Famous For Its Efficient Application Performance And Durability.
Specification: Thread Diameter 3 mm Head Diameter 5.5 mm Head Height 3 mm Screw Length 20 mm Allen Hex Drive 2.5 mm Material 12.9 Grade Alloy Steel
Package Included: 100 PCS Socket Head Cap Screws (M3 x 20mm)
NIULUNBAO 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.
