Fully Threaded T-Slot Nuts — DIN 508 | Black-Oxide Steel, Class 4

FULLERKREG Fully Threaded T-Slot Nuts are a specialized variant of the DIN 508 standard, featuring a through-threaded bore that allows a setup stud or bolt to extend completely beyond the bottom face of the nut. This design is essential for adjustable fixture systems where stud projection length must be variable, and for applications requiring maximum thread engagement depth. Manufactured from A3 low carbon steel with Zinc Cr3 (trivalent chromate) surface treatment, rated to property class 4.

What Is a Fully Threaded T-Slot Nut?

Standard DIN 508 T-slot nuts have a blind or partially threaded bore — the thread stops before the bottom face. A fully threaded T-slot nut has the thread running through the entire height of the nut body, so a stud or bolt can protrude from the underside. Key advantages:

• ✅ Stud can extend beyond the nut bottom — ideal for adjustable-height clamping setups
• ✅ Maximum thread engagement for higher pull-out resistance
• ✅ Compatible with standard DIN 650 T-slot profiles
• ✅ Pairs with setup studs (DIN 6379) and step blocks for flexible workholding
• ✅ Same external dimensions as standard DIN 508 — drop-in replacement where through-thread is needed

Product Specifications

Dimensional Data — Fully Threaded DIN 508 T-Slot Nuts

All dimensions in millimeters (mm). Weight in grams (g) per piece. Slot width (a) and thread (d) are the primary selection parameters.

* Dimensions based on DIN 508 standard. Weight values are nominal reference values. Contact FULLERKREG for certified inspection reports or custom sizes.

Product Photos

Selection Guide — Fully Threaded vs. Standard T-Slot Nut

Standard Reference

These fully threaded T-slot nuts conform to DIN 508 external dimensional requirements with a through-threaded bore modification. They are designed to fit DIN 650 T-slot profiles across a wide range of groove widths. The square body slides into the T-slot from the end of the track and rotates 90° to engage. The flange (k) rests on the slot shoulders to support the nut in position.

• DIN 508 — T-slot nuts for machine tool tables (external dimensions)
• DIN 650 — T-slot profiles (multiple groove widths supported)
• DIN 6379 — Setup studs commonly paired with fully threaded T-slot nuts
• ISO 68-1 — Metric coarse thread form
• Property Class 4 — Minimum tensile strength 400 MPa

Why FULLERKREG?

🏭 Direct Manufacturer — Produced in-house with full process control, no middlemen.
📐 Precision Threading — Full through-thread machined to ISO 68-1 tolerance, verified per batch.
🔩 Wide Size Range — M5 through M24, multiple slot widths in stock.
📦 Bulk & Wholesale Ready — MOQ-flexible, custom packaging for OEM and distributors.
🌍 Global Shipping — Reliable export logistics to 50+ countries.
📋 Full Documentation — Material certs, RoHS compliance, and inspection reports on request.