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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Oval Head (Hexagon Recessed Temper-Proof) Tapping Screw

 

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"