20-Pack SVSQS-M4-6 NBK Cross Recessed Flat Head M4 length 6mm Vacuum Vented Screws Japan Made

Lot of 10 SVSQS-M4-6-NBK Cross Recessed Flat Head M4 length 6mm Screws

SVSQS-M4-6 NBK Hex Socket Head Cap Screws with Captive Washer and Ventilation Hole. Pack of 20

Part Number	M	L	D1	D	L1	B	t	T (Approx.)	d (max.)
SVSQS-M3-5	M4	6MM	7MM	9MM	4MM	3MM	0.8MM	1	1.5

The ventilation hole easily releases gas trapped in the screw holes of equipment and machines, and supports vacuum drawing of vacuum devices. Flat washers and spring washers are captive, therefore prevent separation from screws. It is unnecessary to assemble washers. It simplifies work when wearing gloves in a clean room. Application: Vacuum devices, vacuum chambers, FPD production equipment,semiconductor devices, and electron microscopes