Cylindrical Head Torx Screw With Pin
Cylindrical Head Torx Security Screws with Pin are designed for fastening applications where resistance to unauthorized removal is important. They feature a cylindrical head and a six-lobe Torx drive with a central security pin, which requires a compatible pin-in-Torx driver for installation and removal. Unlike standard Torx screws, the central pin prevents the use of ordinary Torx bits, providing an additional level of tamper resistance. The cylindrical head offers a compact, practical fastening design, making these security screws suitable for equipment housings, electrical enclosures, machinery, and other assemblies where access to fastened components needs to be restricted.
We supply cylindrical head Torx security screws with pin in different thread sizes, lengths, materials, and surface finishes to meet various industrial requirements. Our manufacturing capabilities include cold heading, thread rolling, and precision machining, supporting consistent dimensional accuracy and reliable thread quality. For applications with specific fastening requirements, we can also work from customer drawings or technical specifications to customize head dimensions, drive configurations, and security pin features. This flexibility allows us to supply security fasteners for both standard industrial applications and specialized assembly requirements.


Specification:
| Item | Metric Cylindrical Head Torx Screw With Pin | Inch Cylindrical Head Torx Screw With Pin |
|---|---|---|
| Size Range | M1.4-M12 | 2# - 1/2“ |
| Dimension Standard | ISO 14579 | ASME B18.6.3 |
| Thread | ISO Metric Coarse,Fine Thread | UNC,UNF |
| Thread Standard | ISO 68-1,ISO 965 | ASME B1.1 |
| Thread Class | 6g | 2A |
| Material | Alloy Steel,Stainless Steel | Alloy Steel,Stainless Steel |
| Steel Property Class | ISO 898-1 Class8.8,10.9,12.9 | ASTM A574 |
| Stainless Steel Class | A2-70,A2-80,A4-70,A4-80 | ASTM F837 |
| Surface Treatment | Black Oxidation, Zinc Plated, HDG, Dacromet, Bright Finish,Passivation | |
| Inspection | Dimension,Thread,Mechanical Proeprty,Coating | |
- RELATED SCREW LISTS:
- Countersunk Head Torx Screw
- Button Round Head Torx Screw
- Cylindrical Head Torx Screw
- Countersunk Head Torx Screw with Pin
- Hexagon Socket Countersunk Head Cap Screw
- Hexagon Socket Button Head Screws
- Hexagon Socket Head Cap Screw
- Flat Countersunk Head Screw with Cross Recess
- Pan Head Screw with Cross Recess
- Slotted Countersunk Head Screw
- Slotted Pan Head Screw
Dimension Chart:

| Mon | #2 | #3 | #4 | #5 | #6 | #8 | #10 | #12 | 1/4 | 5/16 | 3/8 | 7/16 | 1/2 | 9/16 | 5/8 | 3/4 | 7/8 | 1 |
| P | 56|64 | 48|56 | 40|48 | 40|44 | 32|40 | 32|36 | 24|32 | 24|28|32 | 20|28|32 | 18|24|32 | 16|24|32 | 14|20|28 | 13|20|28 | 12|18|24 | 11|18|24 | 10|16|20 | 9|14|20 | 8|12|20 |
| dk max | 0.14 | 0.161 | 0.183 | 0.205 | 0.226 | 0.27 | 0.312 | 0.324 | 0.375 | 0.469 | 0.562 | 0.656 | 0.75 | 0.843 | 0.938 | 1.125 | 1.312 | 1.5 |
| dk min | 0.134 | 0.154 | 0.176 | 0.198 | 0.216 | 0.257 | 0.298 | 0.314 | 0.354 | 0.446 | 0.54 | 0.631 | 0.725 | 0.827 | 0.914 | 1.094 | 1.291 | 1.476 |
| k max | 0.086 | 0.099 | 0.112 | 0.125 | 0.138 | 0.164 | 0.19 | 0.216 | 0.25 | 0.312 | 0.375 | 0.438 | 0.5 | 0.562 | 0.625 | 0.75 | 0.875 | 1 |
| k min | 0.083 | 0.095 | 0.108 | 0.121 | 0.134 | 0.159 | 0.185 | 0.21 | 0.244 | 0.306 | 0.368 | 0.43 | 0.492 | 0.554 | 0.616 | 0.74 | 0.864 | 0.988 |
| No. | T8 | T8 | T10 | T10 | T15 | T25 | T27 | T27 | T30 | T45 | T50 | T55 | T55 | T60 | T70 | T90 | T100 | T100 |
| e | 0.094 | 0.094 | 0.111 | 0.111 | 0.132 | 0.178 | 0.2 | 0.2 | 0.221 | 0.312 | 0.352 | 0.446 | 0.446 | 0.529 | 0.619 | 0.795 | 0.882 | 0.882 |
| t min | 0.033 | 0.038 | 0.05 | 0.05 | 0.06 | 0.08 | 0.085 | 0.085 | 0.115 | 0.13 | 0.166 | 0.19 | 0.205 | 0.23 | 0.31 | 0.34 | 0.43 | 0.49 |
