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Pin Hex Countersunk Security Machine Screw

Pin Hex Countersunk Security Screws Stock Sizes

Pin Hex Countersunk Head Security Machine Screws are vandal resistant and can only be fixed and removed by using a special driver bit or key to fit the Pin Hex Drive. They are available in both A2 stainless steel and A4 stainless steel.

They are ideal for applications requiring medium security, and where the fixing needs to be regularly removed for maintenance reasons.

Designed to reduce cam-out, which occurs often in Phillips and 2-Hole drives – this, in turn, lessens the risk of causing damage to the drive tip, screw head or the application.

Pin Hex Security Screws offer a medium security resistance against vandals and thieves at a relatively low cost.

Within the industry Pin Hex security screws are also referred to by other names including Hex Pin, Tamper Pin Hex, Socket Screw with Pin and Din 7991 with Pin.

Tamper Resistant Pin Hex machine screws can be used with Security Wave Nuts, Shear Nuts, Kinmar Reusable Nuts, Kinmar Permanent Nuts, 4-Hole Nuts or Pin Torx Barrel Nuts for added security.

Please contact us with your requirements to further your enquiry.

(Metric)

Thread / Length (mm) 6 8 10 12 16 20 25 30 35 40 50 60 70 80 90 100
M3
M4
M5
M6
M8
M10
M12

(Imperial)

No.6 – 32 No.8 – 32 No.10 – 24 No.10 – 32 No.12 – 24 1/4″ – 20 5/16″ – 18 3/8″ – 16
3/8″
1/2″
5/8″
3/4″
1″
1. 1/4″
1. 1/2″
1. 3/4″
2

Pin Hex countersunk machine screw technical drawing

M3 M4 M5 M6 M8 M10 M12
DK (mm) 5.7 7.7 9.8 11.8 15.1 19.3 23.2
K (mm) 1.7 2.3 2.8 3.3 5.0 6.7 7.4
S (mm) 2 2.5 3 4 5 6 8
TOOL SIZE 2mm 2.5mm 3mm 4mm 5mm 6mm 8mm

*For guidance purposes only