Nuts, Bolts, Screws Fasteners & Fixings

Security Fasteners and General Fixings from Stock and to order

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Pin Pentagon Countersunk Security Machine Screw

Pin Pentagon Countersunk Security Screws are tamper resistant and can only be removed through the use of special bits that only fit the specific drive.

These screws stop vandals or thieves from purchasing standard security bits in tool shops, as the security machine screws offer high security due to the tool required.

At Fastenright, we only supply the tools to customers who have purchased the screws from us as an added security measure.

Due to the countersunk head, the machine screw will sit flush in the surface of the material it’s placed in. They’re also typically used to be covered by a cap or piece of wood – thus improving the security features of the screw.

Often used to maintain security in retail, computers, public transport and more, these parts are becoming more and more popular.

Imperial Sizes

Metric Technical Data & Availability
Thread
Diameter (D)
M2 M2.5 M3 M4 M5 M6 M8 M10 M12 M16
Head Diameter
min. – max. (mm)
3.6 –
4.3
4.7 –
5.9
5.35 –
6.72
7.0 –
8.0
9.75 –
11.2
11.7 –
13.5
15.62 –
17.92
19.5 –
22.4
23.4 –
27
23 –
34
Head Height
max. (mm)
1.2 1.5 1.86 2.48 3.1 3.72 4.96 6.2 7.44 8.8
Available
Lengths (L)
M2 M2.5 M3 M4 M5 M6 M8 M10 M12 M16
4mm black icon image black icon image black icon image
6mm black icon image black icon image black icon image
8mm black icon image black icon image black icon image black icon image black icon image black icon image
10mm black icon image black icon image black icon image
12mm black icon image black icon image black icon image black icon image black icon image black icon image
14mm black icon image black icon image black icon image
15mm black icon image
16mm black icon image black icon image black icon image black icon image black icon image black icon image
20mm black icon image black icon image black icon image black icon image black icon image black icon image black icon image black icon image black icon image
25mm black icon image black icon image black icon image black icon image black icon image black icon image black icon image
30mm black icon image black icon image black icon image black icon image black icon image black icon image black icon image
35mm black icon image black icon image black icon image black icon image black icon image black icon image
40mm black icon image black icon image black icon image black icon image black icon image black icon image black icon image
50mm black icon image black icon image black icon image black icon image black icon image black icon image black icon image
60mm black icon image black icon image black icon image black icon image black icon image
70mm black icon image black icon image black icon image black icon image
80mm black icon image black icon image black icon image black icon image
100mm black icon image black icon image black icon image black icon image
120mm black icon image black icon image
black icon image = Available
Size not listed? Please make an enquiry – we may be able to provide it.

 

Imperial UNC Technical Data & Availability
Thread
Diameter (D)
2-56
UNC
4-40
UNC
6-32
UNC
8-32
UNC
10-24
UNC
12-24
UNC
1/4″-20
UNC
5/16″-18
UNC
3/8″-16
UNC
1/2″-13
UNC
5/8″-11
UNC
Head Diameter
min. – max. (in.)
.168 –
.197
.218 –
.255
.263 –
.307
.311 –
.359
.359 –
.411
.405 –
.425
.480 –
.531
.600 –
.656
.720 –
.781
.872 –
.938
1.112 –
1.188
Head Height
(in.)
.064 .083 .097 .112 .127 .155 .161 .198 .234 .251 .324
Available
Lengths (L)
2-56
UNC
4-40
UNC
6-32
UNC
8-32
UNC
10-24
UNC
12-24
UNC
1/4″-20
UNC
5/16″-18
UNC
3/8″-16
UNC
1/2″-13
UNC
5/8″-11
UNC
3/16″ black icon image black icon image
1/4″ black icon image black icon image
5/16″ black icon image black icon image
3/8″ black icon image black icon image black icon image black icon image black icon image black icon image black icon image
7/16″ black icon image black icon image
1/2″ black icon image black icon image black icon image black icon image black icon image black icon image black icon image black icon image
5/8″ black icon image black icon image black icon image black icon image black icon image black icon image black icon image black icon image black icon image
3/4″ black icon image black icon image black icon image black icon image black icon image black icon image black icon image black icon image black icon image
7/8″ black icon image black icon image
1″ black icon image black icon image black icon image black icon image black icon image black icon image black icon image black icon image black icon image black icon image black icon image
1. 1/4″ black icon image black icon image black icon image black icon image black icon image black icon image black icon image black icon image black icon image
1. 1/2″ black icon image black icon image black icon image black icon image black icon image black icon image black icon image black icon image black icon image
2″ black icon image black icon image black icon image black icon image black icon image black icon image black icon image black icon image black icon image
2. 1/2″ black icon image black icon image black icon image black icon image black icon image
3″ black icon image black icon image black icon image black icon image
3. 1/2″ black icon image black icon image black icon image
4″ black icon image black icon image black icon image
5″ black icon image black icon image black icon image
black icon image = Available
Size not listed? Please make an enquiry – we may be able to provide it.
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