M3-0.5 x 10 Metric DIN 7985A Phil Pan Sem type H DIN 127B Split Lockwasher Full Thrd Zinc WS316 These 6-20 x 3/8" square

These 6-20 x 3/8" square pan self-tapping screws are Type AB screws that are fully threaded and coated in black oxide and oil

They have a Type AB point and a pan head with a 6-lobe drive

creating a strong hold

and construction applications where a strong and reliable fastener is required

they feature a zinc coating that provides up to 1000 hours of salt spray resistance

M3-0.5 x 10 Metric DIN 7985A Phil Pan Sem type H DIN 127B Split Lockwasher Full Thrd Zinc WS316 These 6-20 x 3/8" squareThese are DIN 7985A Phil Pan Sem type H DIN 127B Split Lockwashers. They are full threaded and made of zinc. They have a diameter of 3mm and a length of 10mm. They are used to prevent nuts and bolts from loosening due to vibration or movement.