Hexagon socket screws have good rust resistance and are durable. Head Cap Screws Bolts are widely used in mechanical equipment, automobile manufacturing, furniture assembly, mechanical maintenance, household appliances, electronic products, etc.Specification:Material: Carbon SteelThread Length: 20 mm/0.79 inchThread Diameter: 4 mm/0.16 inchThread Pitch: 0.7 mm/0.03 inchHex Drive Width: 3 mm/0.12 inchHead Diameter: 7 mm/0.28 inchHex Spanner Length: 59 mm/2.32 inchPackage List: 50 Pack M4 Screws + 1 Pack Hex SpannerAdvantage:Socket head screws are made of 12.9 grade carbon steel, with good anti-rust performance and durability.
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