Screw Loose Stainless Steel Button Head “Big Bag,” a 650 piece bulk m3 hardware kit. Perfect for multiple custom builds and maintenance for a variety of R/C trucks and cars. This Stainless Steel BHCS Kit includes 150 SS nylon locknuts, 100 flat washers, 350 m3 screws and 50 pcs of m2 hardware. The screws include 50 pieces each of the following m3 button head lengths: 8mm, 12mm, 14mm, 16mm, 20mm, 25mm and 30mm. In addition this kit includes 20 m2x6mm SHCS, 20 m2x10mm SHCS and 10 m2 plain nuts. All hardware is A-2 (18.8) stainless steel.