720pcs M3 Black Alloy Steel Hex Socket Screw Set (Button & Flat Head)

A 720-piece M3 screw set in Grade 10.9 black alloy steel, split evenly between button head and flat (countersunk) head hex socket screws in five lengths from 4 to 12 mm. It covers most M3 jobs on a 5-inch or larger quad, from motor screws to countersunk frame plate holes.

Key features

• 360 button head screws: a low, rounded head for motors, mounts and tight clearances
• 360 flat head screws: a countersunk head that sits flush in countersunk plate holes
• Grade 10.9 alloy steel with a black oxide finish
• Hex socket drive for an Allen key or hex driver
• Compartment box keeps each head type and length separate

Specifications

• Button head: 100 x 4 mm, 80 x 6 mm, 70 x 8 mm, 60 x 10 mm, 50 x 12 mm
• Flat head: 100 x 4 mm, 80 x 6 mm, 70 x 8 mm, 60 x 10 mm, 50 x 12 mm
• Grade: 10.9 alloy steel
• Tensile strength: 1040-1200 MPa
• Finish: Black oxide
• Total: 720 pieces

Check motor screw length against arm thickness before fitting: a screw long enough to reach the windings can short the motor.