ST4.2-18 X 16 Phillips Pan Head Self-Drilling Screw 410 Stainless Steel DIN7504N (5000pcs/Pkg) Package:5000 These general-use flat washers are

These general-use flat washers are placed under the head of a bolt or nut to create a smooth bearing surface and distribute the load over a wider area

preventing loosening due to vibration

designed to distribute load over a wider area

Flange nylon insert lock nuts combine a flange base with a nylon insert to prevent loosening due to vibration

helping to keep fasteners secure

ST4.2-18 X 16 Phillips Pan Head Self-Drilling Screw 410 Stainless Steel DIN7504N (5000pcs/Pkg) Package:5000 These general-use flat washers areThese general use flat washers are placed under the head of a bolt or nut to create a smooth bearing surface and distribute the load over a wider area.