Drive Type: Hex Socket Head Style: Flat Head 304 Stainless Steel Material, 0.5mm Thread Pitch, Hex Key Hex Socket, Countersunk Flat Head Bolts Screws, M3 x 6mm. Countersunk bolts is anti-corrosion,rustless,non-pollution and high-hardness. It is widely used in industrial. Material: 304 Stainless Steel Product Name: Countersunk Bolt Thread Size: M3 x 4mm(D x L) Color: Silver Thread Pitch: 0.5mm Total Length: 6mm/ 0.24inch Width Across Flat: 2mm/ 0.08inch Head Size: 6 x 2mm/0.24inch x 0.08inch(D x T) Weight: 60g Package Content: 150 x Countersunk Bolts Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.