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2-Hole Mush Head Security Machine Screw

2 Hole Mush Head Security Screws

Tamper resistant screws for protection again vandalism and theft, these security screws have a unique 2-Hole drive system.
A reusable security fixing, these low profile “Mush” head screws offer greater resistance to tampering than usual Pan Head.

  • An aesthetic security solution
  • Lower profile head more resistant to tampering
  • Low / medium security resistance
  • Reusable 2-way drive
  • Usable for lower torque applications

Available in stainless steel with diameters from M5 to M16 and lengths of 12mm to 300mm (150mm threaded).

All available sizes listed below. Additional materials and sizes not listed here are available to order.

M5 M6 M8 M10 M12 M16
12mm
16mm
20mm
25mm
30mm
35mm
40mm
45mm
50mm
55mm
60mm
65mm
70mm
75mm
80mm
90mm
100mm
110mm
120mm
130mm
140mm
150mm
160mm
180mm
190mm
200mm
220mm
240mm
260mm
280mm
300mm

Tamper resistant 2 Hole Mush Head Security Machine Screws – Features

The 2-hole mush head screw 2 holes drilled into the head, requiring a special insert bit to insert and remove.  These holes can be drilled at different distances, so it is advisable to always purchase the screws and corresponding bits from the same supplier.

Suitable for low to medium torque applications, This reusable fixing is an ideal security fastener for applications where maintenance is required and where it is important to maintain the aesthetics of the application it is been used with.

The 2 hole security drive is more prone to cam-out than other security screws such as Pin Hex security screws.  The drive bits can be prone to bending or breaking after prolonged use, so we advise our customers to purchase additional drive bits as backup.

Mush Head Tamper resistant 2 Hole Security screws offer a medium security resistance against vandals and thieves and are harder to remove than the standard pan head version.

The 2 Hole security screws are generally used in areas where aesthetics is more important than a high level of security, for example on trains and in public lifts. 

Within the industry 2 Hole security screws are also referred to by other names including Snake Eye, Pig Nose, Two Pin and Spanner Drive Screws.

For more information and technical data regarding tamper resistant 2 Hole security products please call our sales team.

Note: Special 2 Hole Security Screws can be made to order including small volume manufacture, modifications and custom parts to drawings. Tamper Resistant 2 Hole 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.

2 Hole pan machine screw technical drawing

M5 M6 M8 M10 M12 M16
D mm (max) 13.55 16.55 20.65 24.65 30.65 38.8
h mm (max) 3.3 3.88 4.88 5.38 6.95 8.95

*For guidance purposes only