SB004 Low Profile Socket Barrel Nuts
Closed-end low-profile barrel nuts (sleeve nuts) with hex socket drive, M5–M8 in A4 stainless steel. Tabulated bodies 7–10 mm over 10–16 mm heads, lengths 32/37 mm, installed with a 4–6 mm A/F hex key — the discreet architectural fixing.
Last updated: 2026-11
Specifications
The low profile socket barrel nut is built for joints where the fixing must disappear: a short closed-end sleeve with a shallow socket head that hides almost entirely inside the material or a counterbore. The collected tabulation covers M5, M6 and M8 — bodies of 7, 8 and 10 mm diameter under heads of 10, 12 and 16 mm, overall lengths 32 mm (M5/M6) and 37 mm (M8), with 20–25 mm of that below the head and 30–35 mm total usable length. Drive is a standard hex socket at 4, 5 and 6 mm A/F, and the closed end means the mating machine screw bottoms inside the barrel rather than exiting the face. A4 stainless is the standard material — the seawater-grade choice for exterior architectural work — and any machine screw of the same thread works as the male half. Panel joints, handrail and glazing detail, signage and street furniture are where this pattern earns its keep.
| Designation | SB004 — low profile socket barrel nut (closed end; sleeve nut) |
|---|---|
| Thread range | M5, M6, M8 |
| Body diameter D per thread (mm) | M5 7 · M6 8 · M8 10 |
| Head diameter D1 per thread (mm) | M5 10 · M6 12 · M8 16 |
| Overall length L per thread (mm) | M5 32 · M6 32 · M8 37 |
| Length under head L1 per thread (mm) | M5 30 · M6 30 · M8 35 |
| Thread engagement L2 per thread (mm) | M5 20 · M6 20 · M8 25 |
| Tool size per thread | M5 4 mm A/F · M6 5 mm A/F · M8 6 mm A/F (hex socket) |
| Available lengths (tabulated) | 30 mm, 35 mm |
| Material | A4 stainless steel as standard |
| Typical applications | Architectural applications; suits any machine screw of the same thread |
Materials
- A4 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 (SB004 Low Profile Socket Barrel 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
What makes the low profile socket barrel nut different from a standard barrel nut?
Proportion. The head is shallow and the body short, so the nut hides inside a counterbore or the panel thickness instead of standing proud of the surface — with the socket drive it needs nothing more than a hex key through a small access point. The closed end keeps the screw inside the barrel, which is why it suits architectural joints where both faces matter aesthetically.
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 barrel-nut SKU and head style), nominal thread size and pitch, overall barrel length or grip, material and finish (plain, zinc, or stainless where compatible), whether a through-hole or blind (closed) end barrel is required, the mating screw 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