Research & Development Security Drive/Temper-Proof Fastener
Overcoming manufacturing difficulties, Yea Jann Industrial has mastered various sizes and drive types of security drive (Temper-Proof) fasteners with the top standard of quality control. The security drive fasteners are wildly used in various public spaces, such as metro transits and public equipments.
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		1	Button Head (Torx Temper-Proof) Machine Screw BT (TR+PIN) 3/8-16×1"
		2	Pan Head (Square/Robertson Temper-Proof) Self-Drilling Screw P (□+PIN) ＃8-20×20
		3	Flat Head (Hexagon Recessed Temper-Proof) Tapping Screw F (HEX+PIN) M3.5-AB×13
		4	Oval Head (Hex Temper-Proof) Tapping Screw Oval Head (Torx Temper-Proof) Tapping Screw O (HEX+PIN) M3.5-0.6×12 O (TR+PIN) M3.5-0.6×30
		5	Socket Head (Hexagon Recessed Temper-Proof) Bolt SOCKET（ (HEX+PIN) 1/4-20×1"