TX29 Pin TX Button Flange Security Screws (ISO 7380-2 with Pin)
Button flange head 6-lobe pin security machine screw to ISO 7380-2, M2–M12 as tabulated: flange diameters 4–25 mm, head heights 1.23–7 mm, min socket depth t 1.01–4.16 mm, flange thickness c 0.7–2.4 mm, pitches 0.4–1.75 mm, tools TX6–TX55. Availability matrix marks A2 stainless across 3–120 mm; all tabulated parts made to order; A2 and A4 stainless standard, steel and zinc-plated steel on request.
Last updated: 2026-11
Specifications
TX29 takes the button head of ISO 7380-2 and adds what the button head lacks: a built-in flange that spreads the clamping load over a larger bearing surface without a separate washer. The collected page pitches exactly that combination — rounded head, larger surface area, reduced damage to mating parts — for decorative and load-spreading applications, with the centre pin in the 6-lobe socket supplying the tamper resistance. Every tabulated dimension is stated to ISO 7380-2: flange diameters run 4 mm at M2 to 25 mm at M12, head heights 1.23–7 mm, and the flange thickness (c) and thread pitch are tabulated per size, with socket depth and flange figures starting at M3 — the M2 and M2.5 columns carry no t or c values, so none are claimed. The availability matrix marks every tabulated pair, 3 mm to 120 mm, with the A2 stainless marker, and the page states plainly that all parts listed are made to order — this is a configure-to-order line, not a shelf line, and the schedule belongs on the RFQ. The legend also defines an A4 marker, but no cell carries it, so A4 stainless (stated as standard supply alongside A2 in the page prose) is a quotation line for any specific pair. The page also names the mating security-nut lines — pin TX barrel nuts, wave nuts, shear nuts, Kinmar reusable and permanent nuts, four-hole nuts — that this screw pairs with when the assembly needs both sides secured.
| Designation | TX29 — button flange head security machine screw to ISO 7380-2 (with pin), 6-lobe pin TX drive; medium security, reusable two-way; rounded head with integrated flange for larger bearing surface |
|---|---|
| Thread range (tabulated) | M2, M2.5, M3, M4, M5, M6, M8, M10, M12 (pitch 0.4 / 0.45 / 0.5 / 0.7 / 0.8 / 1 / 1.25 / 1.5 / 1.75 mm) |
| Flange diameter d2 max (mm) | M2 4 · M2.5 5.5 · M3 7 · M4 9.4 · M5 11.6 · M6 13.6 · M8 17.8 · M10 22 · M12 25 |
| Head height k max (mm) | M2 1.23 · M2.5 1.43 · M3 1.7 · M4 2.2 · M5 2.8 · M6 3.3 · M8 4.4 · M10 5.5 · M12 7 |
| Min socket depth t (mm) | M3 1.01 · M4 1.42 · M5 1.65 · M6 2.02 · M8 2.80 · M10 3.62 · M12 4.16; not tabulated for M2/M2.5 |
| Flange thickness c (mm) | M3 0.7 · M4 0.8 · M5 1 · M6 1.1 · M8 1.5 · M10 1.7 · M12 2.4; not tabulated for M2/M2.5 |
| Tool size (collected) | TX6 (M2) · TX8 (M2.5) · TX10 (M3) · TX20 (M4) · TX25 (M5) · TX30 (M6) · TX40 (M8) · TX50 (M10) · TX55 (M12) |
| Length availability (as marked) | 3–120 mm matrix marked A2 stainless on every tabulated pair (M2/M2.5 from 3–20 mm; M3–M12 across the full axis, with the long tails per column); all parts listed are made to order; the legend defines an A4 marker but no cell carries it — A4 pairs at quotation |
| Standard materials | A2 and A4 stainless steel as standard; steel and steel zinc plated on request |
Materials
- A2 stainless steel (standard)
- A4 stainless steel (standard)
- Steel (on request)
- Steel, zinc plated (on request)
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 (TX29 Pin TX Button Flange Security Screws (ISO 7380-2 with Pin)) 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
What does the flange change compared with the plain button-head pin TX screw?
Load distribution. A plain button head (TX01) concentrates clamping on its small bearing circle and usually needs a separate washer under it; the ISO 7380-2 flange builds that washer into the head — TX29 tabulates flange thicknesses of 0.7–2.4 mm and flange diameters well above the head proper (25 mm at M12). For thin sheet, plastics facings and painted surfaces that spreads the load and stops pull-through, and it removes a loose part from a tamper-sensitive assembly — one less component someone can drop or substitute.
The matrix says A2 everywhere — can I get A4?
The collected page states both A2 and A4 stainless steel as standard manufacture, but its availability matrix marks every cell A2 and its A4 marker appears on no tabulated pair. Treat A4 as a quotation line: name the grade, size and length on the RFQ and get the pair confirmed — and note the page also states all listed parts are made to order, so schedule confirmation matters more here than on a stock line.
What should an RFQ for TX29 state?
State the designation (TX29, ISO 7380-2 with pin), thread size and length, material (A2 marked; A4, steel or zinc-plated steel on request), whether a mating security nut from the pin-TX/wave/shear/Kimar lines is wanted on the same order, required certificates, quantity per size and delivery schedule — because every tabulated part is made to order, the schedule commitment should be part of the quote, not an afterthought.
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