DIN 34827 Hexalobular Socket Set Screws
DIN 34827-2016 hexalobular socket set screws, M3 to M24: hexalobular socket number, socket depth t min/max per size — the Torx-compatible set screw identity.
Last updated: 2026-11
Specifications
DIN 34827 is the set screw that takes the hexalobular (Torx-compatible) drive instead of the classic hex socket: the collected table runs M3 to M24 with, per size, the pitch P, the hexalobular socket number (6 through 60 as printed — the drive-size selection code), and the socket depth t min/max (0.80/0.95 at M3 up to 6.8/7.25 at M24). The socket number is the ordering-critical identifier: it maps to the T-drive of the hexalobular system rather than an across-flats dimension, and the depth pair is what guarantees the drive survives the tightening torque without cam-out or bottoming. The registered set screw identities are the hex-socket DIN 913/916 series; this is the hexalobular-drive sibling.
| Standard / scope | DIN 34827-2016 hexalobular socket set screws — M3 to M24 as tabulated |
|---|---|
| Pitch P | 0.5 (M3) to 3 (M24) as printed |
| Hexalobular socket No. | 6, 8, 10, 15, 25, 30, 40, 50, 55, 60 — the drive-size code per size, as printed |
| Socket depth t | Min/max: 0.80/0.95 (M3), 1/1.2, 1.3/1.55, 1.6/1.9, 2.7/3.1, 2.9/3.3, 3.2/3.6, 4.3/4.75, 5.3/5.75, 6.8/7.25 (M24) |
| Not tabulated | Point forms (the standard's point variants), lengths, property classes — per RFQ |
Materials
- Hexalobular set screws buy torque capacity and cam-out resistance at assembly — common in gearboxes, tooling and anywhere a set screw is torqued hard and serviced often. Supply follows the usual set screw routes: 45H hardened alloy (property class 45H), black oxide or zinc; point form (flat/cone/cup/dog) is chosen per the seating part and must be stated on the RFQ since the drive table here covers all points. Order the drive tool by socket number, not by feel — a one-size-off T-driver rounds the socket irrecoverably
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 (DIN 34827 Hexalobular Socket Set 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 the hexalobular socket number map to the drive tool?
The socket number (6, 8, 10 ... 60 in this table) is the hexalobular system's size code — the same numbering the Torx-compatible tooling uses — so a size-40 socket takes the T-matrix driver of that code directly. The t min/max column is the pairing check: the screw must offer at least the minimum depth so the driver engages fully, and no more than the max before the point bottoms out. Mismatches show up as cam-out at torque or a driver that will not seat; keep the socket number on the order and the tooling selection takes care of itself.
Why choose a DIN 34827 set screw over the hex-socket DIN 916 cup point?
Drive performance. The hexalobular socket transfers torque through six lobes with radial drive faces, so it takes higher tightening torque with less cam-out and less tool wear than a hex socket of comparable size — and set screws live or die by the torque they hold without the driver slipping. The trade-offs are tooling availability (T-drivers instead of the universal hex keys) and the socket itself being shallower per size (watch the t min column against heavy tightening). For repeat-service assemblies the reduced rounding usually pays for itself; for one-time fixation the hex-socket identities remain the cheaper default.
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