TX22 7-Lobe Pin Button Security Machine Screws
Button head 7-lobe pin security machine screws, M4–M8 as tabulated: head diameters 7.6–14.0 mm, head heights 2.2–4.4 mm, driven by dedicated 7TX-series bits. Availability matrix marks M6 6–40 mm only; prose states M4–M8 / 6–40 mm as standard in A2 stainless steel; unmarked pairs routed to enquiry per the collected legend.
Last updated: 2026-11
Specifications
TX22 is the widest lobe count in the screw family: a seven-lobed head whose dedicated 7TX-series bits the collected page describes as registered and controlled in availability — distributed solely alongside the screw itself. That supply restriction is the security mechanism: with a 7-lobe pin geometry that ordinary Torx, pin-TX and 5/6-lobe bits cannot engage, and bits limited to the line's own distributors, the practical barrier is higher than any individual head shape alone. The collected tabulation runs M4 to M8 with head diameters 7.6–14.0 mm and head heights 2.2–4.4 mm, and states supply as standard in A2 stainless steel, sizes M4–M8, lengths 6–40 mm. The availability matrix, however, marks only the M6 column, from 6 through 40 mm — M4, M5 and M8 carry no cell markers — so the tabulated length claim here is M6 6–40 mm, the prose range is reported as the source's stated standard range, and any other gauge/length pair routes to the source's own "size not listed — make an enquiry" legend. As with the rest of the pin-TX escalation, the fixing is a reusable two-way fastener suitable for higher-torque joints that maintenance must be able to reopen.
| Designation | TX22 — button head security machine screw, 7-lobe pin drive; dedicated 7TX-series insert bits, registered and restricted to the line's distributors per the collected page |
|---|---|
| Thread range (tabulated) | M4, M5, M6, M8 (prose states M4–M8 as standard; matrix marks M6 only) |
| Head diameter dk per thread (mm) | M4 7.6 · M5 9.5 · M6 10.5 · M8 14.0 |
| Head height k per thread (mm) | M4 2.2 · M5 2.75 · M6 3.3 · M8 4.4 |
| Tool size (collected) | 7TX1 (M4) · 7TX2 (M5) · 7TX3 (M6) · 7TX4 (M8) — 7-lobe-specific bits, not interchangeable with 5/6-lobe pin tools |
| Length availability (as marked) | M6 6–40 mm marked; M4/M5/M8 columns unmarked — stated standard range M4–M8 × 6–40 mm, exact pair confirmed by enquiry per the collected legend |
| Security principle | Reusable two-way fixing; enhanced security through bit registration and limited distribution as well as head geometry; higher-torque capable per the collected page |
Materials
- A2 stainless steel (standard supply per collected page)
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 (TX22 7-Lobe Pin Button 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
How does a 7-lobe drive improve on 5- and 6-lobe pin security?
Through supply control, not just geometry. A 7-lobe recess cannot be engaged by any Torx-family bit an installer already owns — and the collected page states the 7TX bits themselves are registered and restricted to distributors of the screw. The 5-lobe line raises security by being uncommon; the 7-lobe line raises it further by contractually limiting who can sell the tool. The costs are the same as any restricted system: plan bit acquisition with the first screw order, and treat the bits as controlled spares.
Which lengths are genuinely stocked?
Only what the matrix marks: M6 from 6 to 40 mm. The collected prose calls M4–M8 × 6–40 mm the standard range in A2 stainless, but the other three columns print no markers, so this page will not claim those lengths as stocked. Quote them as enquiry lines with the exact gauge and length — the source's own legend invites exactly that — and let the quote confirm supply before the drawing locks.
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; unmarked matrix pairs, zinc-plated steel on request, and specials made to order 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 and head style, the drive (5-lobe pin TX or 7-lobe pin — matched restricted insert bits required), thread or tapping size and length, the material marker you expect (A2 or A4-70 stainless; zinc-plated steel on request), the substrate or mating part, required certificates, and quantity per size — plus destination country. If you are matching existing fixings, name the drive generation explicitly: 5-lobe, 6-lobe and 7-lobe pin bits are not interchangeable.
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