Tek screws also means Self Drilling Screws.Self Drilling Screw gathers drilling, tapping and tightening at the same time. Self drilling screw’s case hardness and core hardness is higher than the self tapping screw. The reason is self drilling screw has an extra function–drilling. In addition, self drilling screw needs to do the drilling test to make sure that the screw could drill the hole with the thread within the limitation time.

Self drilling screws

Standard: IFI,DIN,JIS,GB,Special Design

Size Range: M2.9-M6.3(4#-14#)

Length Range: 13mm-300mm

HEAD TYPE
FLAT	PAN	HWH	HWF	BUGLE	WAFER	PAN WASHER	OVAL	FLOWER	TRUSS	ROUND
DRIVE
PHILLIPS	SQUARE	POZI	SQUARE+PHIL	TORX	SLOTTED	PHIL+SLOTTED	OTHER
POINT TYPE
TEK#1	TEK#2	TEK#3	TEK#4	TEK#5	TYPE 17
THREAD TYPE
TYPE-A	BSB TYPE	CSB TYPE	HI-LOW	MACHINE	DOUBLE	OTHER
10#-12 THD	6#-20 THD	8#-32 THD
12#-11 THD	7#-19 THD	10#-24 THD
14#-10 THD	8#-18 THD	12#-24 THD
	10#-16 THD	14#-20 THD
PLATING
PLAIN	ZINC PLATED	COLOR ZINC PLATED	BLUE ZINC PLATED	BLACK PHOSPHATE	GRAY PHOSPHATE	BLACK ZINC PLATED	WHITE ZINC PLATED
BLACK OXIDE	DECROTIZEO	RUSPERT	XYLAN	NICKEL	BRONZE	SPRAY PAINT	OTHER
ADDITIONAL REQUEST
SERRATION UNDER HEAD	W / O WASHER	W / BONDED WASHER	W / PVC WASHER	W / STEEL EPDM	W/RUBBER WASHER	W / HEAD MARK	W / WING	SLOTTED + WING	OTHER