WA02 Security Scroll (Wave) Nuts
Scroll-drive (wave profile) security nuts, M2–M48 metric and No.2–7/8" imperial as tabulated: head heights 3.2–14.2 mm, diameters 7.9–38.0 mm, with source-stated installation torques up to 120 N·m — the high-torque end of the spanner-drive security family. A1/A4 stainless as standard.
Last updated: 2026-11
Specifications
The security scroll nut — also called a wave nut for its undulating drive profile — is the high-torque member of the spanner-drive security family. Instead of discrete holes, the face carries a waved scroll pattern that only the matching tool engages; the collected tabulation rates installation torque explicitly, from 7 N·m at M3 up to 120 N·m at M24, an order of magnitude beyond what the hole-pattern drives tolerate. The metric table runs M2 to M48 (head heights 3.2–14.2 mm, head diameters 7.9–38.0 mm), standard and fine pitch, with an imperial table from No. 2 up to 7/8". A1 and A4 stainless steel are the standard materials, with mild steel, high-tensile steel and plastic available to order. A case-hardened steel variant adds hack-saw and chisel resistance plus, per the source, up to 30% more torque capacity. This is the nut for public installations that face real leverage attempts — street furniture, fencing, playground and transport hardware — where a hole-pattern drive would cam out under attack.
| Designation | WA02 — security scroll (wave) nut; waved scroll drive profile, engaged only by the matching restricted tool |
|---|---|
| Metric thread range (tabulated) | M2 – M48 (standard and fine pitch) |
| Head height K per thread (mm) | M2–M4 3.2 · M5 4.2 · M6 5.5 · M8 6.4 · M10 7.2 · M12 8.7 · M14/M16 11.0 · M20/M22 12.8 · M24 14.2 · M36 23.0 (M9, M30, M33, M39–M48 not tabulated — dash cells in source) |
| Head diameter DK per thread (mm) | M2–M4 7.9 · M5 9.5 · M6 12.7 · M8 15.8 · M10 19.0 · M12 22.2 · M14/M16 28.5 · M20/M22 34.9 · M24 38.0 · M36 51.0 |
| Max installation torque per thread (source tabulation) | M3 7 N·m · M4 8 · M5 10 · M6 12 · M8 35 · M10 50 · M12 65 · M14/M16 75 · M20/M22 85 · M24 120 N·m (M36 torque cell is a dash in source — not rendered) |
| Imperial gauges (tabulated) | No. 2 – No. 12, 1/4" – 7/8" (K 3.2–14.2 mm, DK 7.9–38.0 mm; 1" and above are dash cells in source — not rendered) |
| Security principle | Scroll drive with restricted tool distribution — the source states tools are sold only to registered purchasers of the fixings, never to non-account customers |
| Hardened variant (source-stated) | Case-hardened steel option: resists hacksawing/chiselling and adds up to 30% more torque capacity |
| Materials (collected) | A1 stainless and A4 stainless as standard; mild steel, high-tensile steel, plastic to order |
Materials
- A1 stainless steel
- A4 stainless steel
- Mild steel (to order)
- High tensile steel (to order)
- Plastic (to order)
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 (WA02 Security Scroll (Wave) Nuts) 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 choose a scroll nut over the hole-pattern security nuts?
Torque and attack resistance. The collected tabulation rates the scroll drive at up to 120 N·m at M24 — far beyond the low-to-medium torque class of the two-hole and four-hole patterns — and the case-hardened steel variant additionally resists hacksaw and chisel attack while adding up to 30% more torque. Where a vandal can bring leverage rather than just curiosity, the scroll profile is the spanner-drive family's heavy answer.
Are some sizes missing from the tables?
A few, and deliberately off this page. The collected tables carry dash cells at M9, M30, M33, M39 through M48, at the M36 torque cell, and across the imperial range from 1" upward — we render only sizes with clean sourced values rather than interpolating. Everything from M2 to M24 is fully tabulated, which covers the common specification range; anything beyond that goes to quotation for confirmation.
What is the MOQ and lead time for this nut type?
The minimum order quantity is 10,000 pieces. Stock items ship in 3–7 days; non-stock items are confirmed at quotation. Common diameters in this nut type are widely stocked; confirm the exact schedule against quantity and size mix at quotation.
What should an RFQ for this nut type state?
State the designation (for example the spanner-drive SKU and head style), nominal thread size and pitch, material and finish, whether the matching drive tool or bit is needed, the mating screw or stud specification, required certificates, and quantity per size — plus destination country.
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