LinkMejor M4x20mm Hex Socket Head Screw Bolts Nuts Black Total 200pcs

Description:1. 10.9 alloy steel material, hex socket, countersunk flat head bolts screws. Carbon steel nut, hex head, female threaded inside.2. Bolt and nut are used in conjunction to fasten two or more parts together.3. Used widely in the home and office appliance, communication equipment, ship assembly, and other machinery industry.Specification:Bolt:Material: 10.9 Alloy SteelThread Size: M4 x 17mm/0.16" x 0.67"(D*L)Thread Pitch: 0.7mmTotal Length: 20mm/ 0.8"Head Size: 8 x 3mm/0.3" x 0.12"(D*T)Width Across Flat: 2.5mm/ 0.1"Nut:Material: Carbon SteelThread Size: M4/0.16"Height: 3mm/0.12"Hex.Width: 7mm/0.28"Package Content:100pcs Countersunk Bolts100pcs Hex Nuts