2H13 Two Hole Raised Countersunk Self Tapping Security Screws
Raised countersunk head two-hole self-tapping security screws, No.6–No.10 as tabulated (3.5–4.8 mm nominal): head diameters 5.7–9.5 mm, head heights 1.65–2.75 mm. A2 stainless steel off the shelf; marked lengths run 1/2″ (13 mm) to 2″ (50 mm) across all three gauges.
Last updated: 2026-11
Specifications
2H13 closes the self-tapping trio with the raised countersunk head: the conical seat locates in a standard countersink, a shallow dome stays proud enough to keep the twin drive holes clear, and the thread-cutting point forms its own path in sheet and plastic — flush enough to clear moving parts, forgiving of an imperfect seat, and visually quiet. The collected tabulation covers gauges No.6, No.8 and No.10 (nominal 3.5, 4.2 and 4.8 mm) with head diameters 5.7–9.5 mm, head heights 1.65–2.75 mm and matching No.6/No.8/No.10 insert bits, and states supply off the shelf in A2 stainless steel with other sizes and materials available to order. The availability matrix is the clean one of the self-tapping line: every gauge is marked from 1/2″ (13 mm) through 2″ (50 mm) — seven marked lengths across all three gauges, a fully legible rectangular band. Drive behaviour is family-standard: reusable two-way fixing for low to medium torque, cam-out earlier than pin-hex, bits that wear with prolonged use, hole centre distances that vary between makers — screws and matching bits from the same supplier.
| Designation | 2H13 — raised countersunk head self-tapping security screw, two-hole drive; conical seat with a shallow driving dome, thread-cutting point, two-pin insert bit |
|---|---|
| Gauge range (tabulated) | No.6, No.8, No.10 (nominal 3.5–4.8 mm) |
| Head diameter dk per gauge (mm) | No.6 5.7 · No.8 7.6 · No.10 9.5 |
| Head height k per gauge (mm) | No.6 1.65 · No.8 2.2 · No.10 2.75 |
| Tool size (collected) | No.6 · No.8 · No.10 two-pin insert bits by gauge |
| Length availability (as marked) | All three gauges marked from 1/2″ (13 mm) to 2″ (50 mm): 1/2″, 5/8″, 3/4″, 1″, 1 1/4″, 1 1/2″, 2″ |
| Security principle | Reusable two-way fixing, low/medium security resistance, low to medium torque; family cam-out and bit-wear behaviour |
| Materials (collected) | A2 stainless steel off the shelf; other sizes and materials available to order |
Materials
- A2 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 (2H13 Two Hole Raised Countersunk Self Tapping Security 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 the raised countersunk form over flush or pan in this gauge range?
It is the tolerant middle: flush enough to clear sliding covers and fingers like a countersunk head should, but the shallow dome forgives a countersink that is a fraction shallow or a paint film in the seat — conditions common on retrofit electrical and enclosure work. Against the pan head 2H04, it trades bearing width for a flush-looking finish. In the No.6–No.10 span, with the fully marked 13–50 mm length band, it is the specification-friendly default of the self-tapping three.
Is the whole 13–50 mm length band genuinely available in every gauge?
That is what the collected matrix marks: cells for No.6, No.8 and No.10 at every length step from 1/2″ (13 mm) to 2″ (50 mm) carry the source's availability marker — the only fully marked matrix in this batch. Lengths outside the band, and non-standard sizes or materials, are order items per the collected page; quote them explicitly.
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.
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