We cross-reference Alstom DTR part numbers to our Auto-Lok prevailing-torque nuts so you can source the correct item faster. DTR numbers are used across rail/transport programs; the table below shows our closest Auto-Lok alternatives by size, material, and finish.
- All-metal, reusable locking nuts (no nylon insert).
- Available in carbon steel Class 8 (FLZN 0.15), stainless A2/A4, and other finishes.
- Certificates of Conformity available on request.
| Alstom DTR Number | Description | Auto-Lok Nut |
|---|---|---|
| DTR0009907233 | NUT H LOCK 2 SLOTS M8 — Stainless A4-80 — NF E 25-411 — DTRF150213 | ALNdM8X125A4 |
| DTR0009907232 | NUT H LOCK 2 SLOTS M8-8 — Carbon Steel 8 — FLZN 0.15 — NF E 25-411 — DTRF150213 | ALNdM8X125CL8 |
| DTR0009907229 | NUT H LOCK 2 SLOTS M6 — Stainless A4-80 — NF E 25-411 — DTRF150213 | ALNdM6X100A4 |
| DTR0009907187 | NUT H LOCK 2 SLOTS M10 — Carbon Steel 8 — FLZN 0.15 — NF E 25-411 — DTRF150213 | ALNdM10X150CL8 |
| DTR0009907228 | NUT H LOCK 2 SLOTS M6 — Carbon Steel 8 — ZN 0.15 — NF E 25-411 — DTRF150213 | ALNdM6X100CL8 |
| DTR0009907188 | NUT H LOCK 2 SLOTS M10 — Stainless A4-80 — NF E 25-411 — DTRF150213 | ALNdM10X150A4 |
| DTR0009907192 | NUT H LOCK 2 SLOTS M12 — Stainless A4-80 — NF E 25-411 — DTRF150213 | ALNdM12X175A4 |
| DTR0009907191 | NUT H LOCK 2 SLOTS M12 — Carbon Steel 8 — FLZN 0.15 — NF E 25-411 — DTRF150213 | ALNdM12X175CL8 |
| DTR0021373057 | FT.NF E 25-411 — M6-8 | ALNsM6X100CL8 |
| DTR0021373187 | FT.NF E 25-411 — M8-8 | ALNsM8X125CL8 |
| DTR00213721BC | FT.NF E 25-411 — M5 — A2-70 | ALNsM5X080A2 |
| DTR1000090708 | DOUBLE SLOTTED LOCKING NUT — M20 | ALNdM20X250A2 |
| DTR1000099314 | AUTO LOCK NUT — M4 — A2 — Double Slotted — Stainless A2 | ALNdM4X070A2 |
If your DTR reference isn’t listed, share the drawing/spec (size, material, finish). We can map it to the correct Auto-Lok alternative or propose a qualified substitute.
