340 Pcs Metric M3 Screw Assortment, Black Small Screws Suitable for 3D Printer DIY, 12.9 Grade Alloy Steel Hex Socket Head Cap, Black Zinc Plated

Description

【Features:】 ●Suitable for Small DIY Projects: Small black screws and nuts, suitable for small DIY projects such as 3D printing and RC cars DIY. ●Black and Not Oily: This product adopts a Black Zinc Pated process, which is different from the traditional Black Oxide process.Has a better rust prevention function, not easy to be contaminated with dust, and the most important thing is not to make your hands or the small items oily. ●High Quality Alloy Steel:12.9 grade alloy steel with superior rust resistance ensures long lasting results， corrosion resistance, anti-aging, good toughness. ●Well packed: We use a small plastic box with clear classification to place these small screws. To prevent screw confusion, we also prepare another outer packaging to ensure that the products are not damaged during transportation.【Specifications:】 -Surface finish：Black Zinc Plated -Pitch:The distance between adjacent threads of these Metric M3 Screws is 0.5mm - Material: 12.9 Grade Alloy Steel - Screw Type: Hex Socket Head Cap Screw -Quantity:400pcs Screws+1pc Allen Wrench (Free) 【Package Included:】 M3 X 6 mm ------------40pcs M3 X 8 mm ------------ 40pcs M3 X 12 mm-----------30pcs M3 X 16 mm----------- 30pcs M3 X 20 mm----------- 30pcs M3 Nuts-----------------170pcs 【Total:340 pcs M3 Alloy Steel Hex Socket Head Cap Screws and Nuts】 【Note: Small Parts, Keep Away From Children Under 5 Years Old.】