100PCS Screws: 50 x Countersunk Hex Socket Screws & 50 (+/- 2%) x countersunk screws
10.9 Carbon Steel Material, 1mm Thread Pitch, Hex Key Hex Socket Countersunk Flat Head Key Bolts Screws.
Countersunk bolts is anti-corrosion,rustless,non-pollution and high-hardness.
It is widely used in industrial.

Product Name: countersunk screws
Thread size: (D x L1)
Countersunk head M3 x 4 mm (D x L)
Drive type: Phillips
Thread pitch: 0.5 mm
Overall length: (L) 6 mm / 0.6 cm
Head diameter: (D) 5 mm / 0.5 cm
Head height: (T) 2 mm / 0.2 cm
Head Style: Flat Head
Head Style: Flat Head,Countersunk Head
Product Name: Countersunk Hex Socket Screws
Thread Size: M3/0.12inch(D)
Drive Type: Hex Socket
Thread Pitch: 0.5mm
Total Length: 8mm/0.3inch
Thread Length: 6mm/0.24inch
Hex Socket Width: 2mm/0.08inch
Head Size: 6x2mm/0.24inchx0.08inch(D x H)
Color: Black+galactic tone
Material: 10.9 Carbon Steel+ 304 stainless steel

Package Content:
50 x Countersunk Hex Socket Screws
50 (+/- 2%) x countersunk screws

Only the above package content, other products are not included.
Note: 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.