The Coupler,drawbar,ring, cataloged under National Stock Number 2540-01-691-7405, is classified within Federal Supply Class 2540 (Vehicular Furniture and Accessories) of the Vehicular Equipment Components group. The manufacturer of record is Saf-Holland, Inc.. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 2540-01-691-7405 |
| Primary Part Number | DB-1249-S11983 |
| Item Name | Coupler,drawbar,ring |
| FSC / FSG | 2540 / 25 — Vehicular Furniture and Accessories |
| Manufacturer | Saf-Holland, Inc. |
| Status | ACTIVE |
| Cotter Pin Hole Diameter | 76.2 MILLIMETERS NOMINAL MM |
| Heat Treatment | HARDENED |
| Shank Length | 335.6 MILLIMETERS NOMINAL MM |
| Style Designator | STRAIGHT ROUND STEPPED SHANK W/SHOULDER |
| Material Document and Classification | ASTMS1 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND |
| Thread Size | 2 |
| Screw Thread Series Designator | UNF |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| DB-1249-S11983 PRIMARY | Saf-Holland, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 12604136 | 7/2 Vendor item drawing reference U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 2540-01-691-7405 is a Coupler,drawbar,ring, manufactured by Saf-Holland, Inc., classified under FSC 2540, Vehicular Furniture and Accessories. Status: active.
NSN 2540-01-691-7405 has 1 manufacturer part number on file: DB-1249-S11983 (Saf-Holland, Inc.).
Key specifications for DB-1249-S11983: Overall Height: 158.7 MILLIMETERS NOMINAL MM; Cotter Pin Hole Diameter: 76.2 MILLIMETERS NOMINAL MM; Heat Treatment: HARDENED; Shank Length: 335.6 MILLIMETERS NOMINAL MM. 9 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.