Head Width Across Flats: 10mm; Head Height: 4.24mm; Color: Black.
Package Included: 20 PCS Hex Head Bolts (M6 x 30mm)
Material: It Is Made Of High Quality 8.8 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.