TX01 6-Lobe Pin TX Button Head Security Machine Screws
Button head machine screws on the 6-lobe pin TX drive, M2–M12 as tabulated: head diameters 3.4–21.0 mm, head heights 1.3–6.6 mm, tool sizes TX6–TX55. A2 and A4 stainless steel as standard; a two-way reusable fixing driven only by pin-TX tooling.
Last updated: 2026-11
Specifications
The button head machine screw is the baseline member of the pin-TX security line: a six-point star recess with a solid pin set in its centre, so a standard Torx bit bottoms out on the pin and only the matching pin-TX driver engages the lobes. The collected tabulation runs M2 to M12 — head diameters stepping from 3.4 mm to 21.0 mm, head heights from 1.3 mm to 6.6 mm, and driver sizes from TX6 at M2 to TX55 at M12, one size per thread. The drive is two-way and reusable, which suits panels and enclosures that need legitimate servicing, and the engagement of six lobes around the pin gives more torque transfer and less cam-out than Phillips or two-hole drives — the collected source classes the fixing as medium security at low cost, usable in higher-torque applications. Metric lengths are tabulated for M2 and M2.5 from 3 mm to 20 mm as available to order; the imperial table on the collected page carries column headers only with no legible size markings, so no imperial availability is stated here. For added security the screw pairs with pin-TX barrel nuts, wave nuts, shear nuts, Kinmar nuts or four-hole nuts.
| Designation | TX01 — button head security machine screw, 6-lobe pin TX drive (star recess with centre pin; standard Torx bits are blocked by the pin) |
|---|---|
| Thread range (tabulated) | M2, M2.5, M3, M3.5, M4, M5, M6, M8, M10, M12 |
| Head diameter dk per thread (mm) | M2 3.4 · M2.5 4.6 · M3 5.7 · M3.5 6.6 · M4 7.6 · M5 9.5 · M6 10.5 · M8 14.0 · M10 17.5 · M12 21.0 |
| Head height k per thread (mm) | M2 1.3 · M2.5 1.5 · M3 1.65 · M3.5 1.9 · M4 2.2 · M5 2.75 · M6 3.3 · M8 4.4 · M10 5.5 · M12 6.6 |
| Tool size per thread | M2 TX6 · M2.5 TX8 · M3 TX10 · M3.5 TX15 · M4 TX20 · M5 TX25 · M6 TX30 · M8 TX40 · M10 TX45 · M12 TX55 |
| Length availability (as marked) | M2 and M2.5 tabulated as available to order in 3–20 mm lengths; other metric cells carry no legible marking |
| Security principle | Two-way reusable pin-TX drive — medium security; installation and removal only with the matching pin-TX driver |
| Materials (collected) | A2 stainless steel and A4 stainless steel as standard; other materials and finishes to order |
Materials
- A2 stainless steel
- A4 stainless steel
Ordering & documentation
Documents
Shipments are backed by Mill Test Certificate (MTC), Dimensional Report, Salt Spray Test Report on request, with full batch traceability from raw material to finished product. Quality management follows the owner-confirmed compliance list: ISO 9001:2015, RoHS, REACH. Exact document sets are confirmed on the order.
Quotation
- The fastener family (TX01 6-Lobe Pin TX Button Head Security Machine Screws) plus the standard designation from your drawing — DIN / ISO / JIS / ASTM / ANSI, or a drawing for custom parts.
- Size (diameter and length), thread type (metric or inch), property class or grade, and coating or finish.
- Quantity per size and your target delivery date.
- Destination country, and any required documents (for example a mill test certificate) so the quote includes them.
Sample & supply
Minimum order quantity is 10,000 pieces. Stock items run 3–7 days. Quantities or variants outside the standard range are confirmed at quotation.
Storage & shipping
Parts are packed for export and shipped factory-direct to buyers in Europe, Asia, the Americas and the Middle East. Store fasteners dry and protected until installation, and keep coated parts in their packaging until use; specific packing and preservation requirements can be stated on the order and confirmed at quotation.
Frequently asked questions
Why pick pin-TX over simpler security drives like two-hole or clutch head?
Torque and tool control. Six lobes engaging around a centre pin transfer more torque with less cam-out than Phillips or two-hole drives, so the fixing survives powered installation without rounding — and the collected source classes pin-TX as usable in higher-torque applications where the shallow two-hole drive is not. The trade is tool availability: any pin-TX driver works the screw, so for joints that must never reopen a one-way or shear-off fixing is the stronger choice.
Which lengths can I actually order in the small metric sizes?
The collected availability matrix marks M2 and M2.5 as available to order in lengths from 3 mm to 20 mm — the mark in the source legend means made or sourced to order, not ex-stock. Larger metric threads carry no legible length markings in the collected table, so availability for M3 and up is confirmed against your size mix at quotation rather than assumed from this page.
What is the MOQ and lead time for these security screws?
Minimum order quantity is 10,000 pieces per item. Stocked sizes ship in 3–7 days; sizes quoted as available to order, and non-standard sizes or materials, are quoted with a confirmed schedule. Confirm the exact schedule against quantity and size mix at quotation.
What should an RFQ for these security screws state?
State the designation code (TX01 through TX20) and head style, the drive (6-lobe pin TX — the matching pin-TX driver or bit is required), nominal thread size and length, material and finish, the substrate or mating nut where relevant, required certificates, and quantity per size — plus destination country.
Related knowledge
- Thread-Forming vs Thread-Cutting vs Thread-Rolling Self-Tapping Screws: What the Evidence Settles on Base Material
- Screw Family Selection by Base Material: Wood, Machine and Self-Tapping Threads, Engagement and Coating
- Hex Bolts vs Socket Head Cap Screws: What the Evidence Settles on Strength, Clearance and Cost
Request a Quote
Get factory-direct pricing from the manufacturer.
What to include in your inquiry
- ✓ Standard and property class (e.g. DIN 912, ISO 4762, class 8.8) — or a drawing for custom parts.
- ✓ Sizes, lengths and thread type (metric or inch).
- ✓ Quantity per size and your target delivery date.
- ✓ Destination country, plus any coating or finish requirement.
- ✓ Any documents you need with the shipment (e.g. mill test certificate) so the quote includes them.
- ✓ Your inquiry goes straight to the factory team by email and gets a reply within 24 hours.
- ✓ Factory-direct pricing
- ✓ Standard and custom specifications
- ✓ Factory-direct export to buyers in Europe, Asia, the Americas and the Middle East
- ✓ Full fastener family support