Pin Hex Security Screws

Self Tappers

             

Security bits and key wrenches in 6 sizes

Machine Screws

 

Technical / Size Guide

click here for technical guide to screw head sizes & drilling guide (357kb PDF file)

Pin Hex Security Screws are tamper resistant and virtually impossible to remove without the special matching screwdriver.  The central pin in the hex socket prevents the use of a standard hex key.

The screws are available as Self Tappers in Countersunk head and Button head formats, and as Machine Screws with Countersunk Head, Button Head or Raised Countersunk Head (popular for switch plates and electrical socket boxes). All are available in box quantities of 100.

Self Tappers      stock sizes      Countersunk Head         Button Head

Length >	3/8"	1/2"	5/8"	3/4"	1"	1 1/4"	1 1/2"	2"	2 1/2"	Driver  Size
Gauge /Size	9.5mm	13mm	16mm	19mm	25mm	32mm	38mm	50mm	63mm
6   3.5mm										H 30
8   4.2mm										H 40
10   4.8mm										H 40
12   5.5mm										H 40
14   6.3mm										H 40

Machine Screws   stock sizes    Countersunk      Button Head      Raised Countersunk

Length

8mm

10mm

12mm

16mm

20mm

25mm

30mm

35mm

40mm

50mm

60mm

Driver  Size

M 3

H 20

M 3.5

H 30

M 4

H 40

M 5

H 40

M 6

H 40

M 8

H 50

M 10

H 60

M 12

H 80

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