- 4, 5, & 6mm stainless steel fastener kit - Includes socket cap screws, flat socket cap screws, flat washers, lockwashers, plain nuts, and locking nuts - 218 Pieces Kit contains: - M4 X 8 Socket Head Cap qty. 8 - M4 X 16 Socket Head Cap qty. 8 - M4 X 8 Flat Socket Head Cap qty. 4 - M5 X 12 Socket Head Cap qty. 12 - M5 X 10 Socket Head Cap qty. 12 - M5 x 8 Socket Head Cap qty. 12 - M5 X 16 Socket Head Cap qty. 8 - M5 X 16 Button Socket Head qty. 16 - M5 X 25 Socket Head Cap qty. 4 - M5 X 8 Flat Socket Head Cap qty. 4 - M5 X 12 Flat Socket Head Cap qty. 8 - M5 X 16 Flat Socket Head Cap qty. 8 - M6 X 20 Socket Head Cap qty. 2 - M6 X 35 Socket Head Cap qty. 2 - M6 X 45 Socket Head Cap qty. 2 - M4 Flat Washer qty. 8 - M5 Hex Nut qty. 20 - M5 Nylock Nut qty. 10 - M5 Flat Washer qty. 20 - M5 Lockwasher qty. 20 - M6 Hex Nut qty. 8 - M6 Nylock Hex Nut qty. 6 - M6 Flat Washer qty. 8 - M6 Lockwasher qty. 8