2H03 Two Hole Raised Countersunk Security Machine Screws
Raised countersunk head two-hole security machine screw, M3.5 as the single tabulated thread: head diameter 6.4 mm, head height 1.9 mm, tool size No.6. Supplied standard in M3.5 in A2 stainless steel; availability matrix unmarked — lengths confirmed at quotation.
Last updated: 2026-11
Specifications
2H03 concentrates the two-hole line on one deliberately chosen thread: M3.5, the size the electrical trade uses for accessory plates, enclosure lids and switchgear fittings. The head is raised countersunk — the conical seat locates in a standard countersink while the shallow dome keeps the twin-hole drive clear of paint and fills — with a tabulated 6.4 mm head diameter, 1.9 mm head height and a No.6 two-pin insert bit. The collected page states supply standard in M3.5 in A2 stainless steel, with non-standard sizes, materials and finishes available to order, and it names the application ground directly: access control panels, prisons, hospitals, schools, lifts, trains and other public areas — serviced spaces where the fixing must survive cleaning and tampering but still come out for maintenance with the right bit. The raised profile is the practical difference from the flush 2H02: it tolerates a slightly imperfect countersink and keeps the drive holes easier to clean out. The collected availability matrix prints length rows with no legible markings, so no lengths are claimed on this page — availability is confirmed against your size mix at quotation.
| Designation | 2H03 — raised countersunk head security machine screw, two-hole drive; conical seat with a shallow driving dome, two-pin insert bit (tool No.6) |
|---|---|
| Thread range (tabulated) | M3.5 (single size — the electrical-trade thread, stated as the standard supply) |
| Head diameter dk (mm) | M3.5 6.4 |
| Head height k (mm) | M3.5 1.9 |
| Length availability | No legible markings in the collected availability matrix — confirmed at quotation |
| Application (source-stated) | Electrical trade: access control panels, prisons, hospitals, mental health facilities, schools, lifts, trains and other public areas |
| Security principle | Reusable two-way fixing, low/medium security resistance, low to medium torque; two-hole family cam-out and bit-wear behaviour |
Materials
- A2 stainless steel (standard supply)
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 (2H03 Two Hole Raised Countersunk 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
Raised countersunk or flush countersunk for an M3.5 electrical fitting?
Raised — this 2H03 — when the accessory plate or lid is fitted to a slightly uneven or painted countersink: the dome bridges an imperfect seat and keeps the twin drive holes clear of filler and film. Flush 2H02 when the surface must be perfectly flat, as on sliding elements. On the electrical thread both exist precisely because accessory hardware mixes the two seatings; match the head style to the plate you are fastening, and state it explicitly on the RFQ alongside the M3.5 thread.
What lengths can I order?
The collected matrix lists length rows but marks no cells legibly, so this page does not quote lengths — treating length as a quotation line is the honest position. State the length and the panel build-up on the RFQ alongside the M3.5 thread; the collected source confirms non-standard sizes, materials and finishes are available to order, including bespoke parts made to drawings.
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 (2H01 through 2H14) and head style, the drive (two-hole pig nose / snake eye — fitted with a matching two-pin insert bit), thread or tapping size and length, the hole centre distance your existing bits expect (the source notes it varies between makers), material and finish, the substrate or mating part, required certificates, and quantity per size — plus destination country.
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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