The Adapter,towbar,vehicular, cataloged under National Stock Number 2540-01-689-7844, is classified within Federal Supply Class 2540 (Vehicular Furniture and Accessories) of the Vehicular Equipment Components group. The manufacturer of record is Mack Defense Llc Dba Mack Defense Llc. Government technical data includes 12 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 2540-01-689-7844 |
| Primary Part Number | 23931396 |
| Item Name | Adapter,towbar,vehicular |
| FSC / FSG | 2540 / 25 — Vehicular Furniture and Accessories |
| Manufacturer | Mack Defense Llc Dba Mack Defense Llc |
| Status | ACTIVE |
| Component Quantity | 5 |
| Document Type | BILL OF MATERIAL |
| Color Chip Number | 33446 |
| Supply Items and Quantities | 2 STEEL TUBES, 3 STEEL PLATES. |
| Mounting Hole Diameter | 120.65 MILLIMETERS NOMINAL MM |
| Vehicle Identification Designator | M917A3 |
| Document Source | 6B8L4 |
| Vehicle Design Control Activity | 19207 |
| Color | TAN |
| Surface Treatment | CARC (CHEMICAL AGENT RESISTANT COATING) |
| Material | STEEL |
| Mounting Hole Type | THRU HOLE |
| 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 |
|---|---|
| 23931396 PRIMARY | Mack Defense Llc Dba Mack Defense Llc (USA) |
NSN 2540-01-689-7844 is a Adapter,towbar,vehicular, manufactured by Mack Defense Llc Dba Mack Defense Llc, classified under FSC 2540, Vehicular Furniture and Accessories. Status: active.
NSN 2540-01-689-7844 has 1 manufacturer part number on file: 23931396 (Mack Defense Llc Dba Mack Defense Llc).
Key specifications for 23931396: Component Quantity: 5; Document Type: BILL OF MATERIAL; Color Chip Number: 33446; Supply Items and Quantities: 2 STEEL TUBES, 3 STEEL PLATES.. 12 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.