The Coupler,drawbar,ring, cataloged under National Stock Number 2540-00-777-9802, is classified within Federal Supply Class 2540 (Vehicular Furniture and Accessories) of the Vehicular Equipment Components group. The manufacturer of record is Army, United States Department of the Dba Rock Island Arsenal Jmtc. Government technical data includes 18 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.
| Parameter | Value |
|---|---|
| NSN | 2540-00-777-9802 |
| Primary Part Number | 7779802 |
| Item Name | Coupler,drawbar,ring |
| FSC / FSG | 2540 / 25 — Vehicular Furniture and Accessories |
| Manufacturer | Army, United States Department of the Dba Rock Island Arsenal Jmtc |
| Status | ACTIVE |
| Keyway Depth | 0.280 INCHES NOMINAL IN |
| Shank End Keyway | PROVIDED |
| Ring Inside Diameter | 3.000 INCHES NOMINAL IN |
| Taper Per Foot | 4.800 INCHES NOMINAL IN |
| Cotter Pin Hole Diameter | 0.440 INCHES NOMINAL IN |
| Shank Length | 16.380 INCHES NOMINAL IN |
| Style Designator | ROUND TAPERED STEP SHANK W/SHOULDER |
| Thread Length | 2.380 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Painted Feature | NOT INCLUDED |
| Unthreaded Shank End Diameter | 2.000 INCHES NOMINAL IN |
| Taper Length | 3.750 INCHES NOMINAL IN |
| Keyway Length | 2.996 INCHES NOMINAL IN |
| Thread Size | 2 IN.-12 IN |
| Keyway Width | 0.496 INCHES NOMINAL IN |
| Screw Thread Series Designator | UN |
| Shank End Thread Provision | THREADED |
| Ring Outside Diameter | 6.240 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 7779802 PRIMARY | Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA) |
NSN 2540-00-777-9802 is a Coupler,drawbar,ring, manufactured by Army, United States Department of the Dba Rock Island Arsenal Jmtc, classified under FSC 2540, Vehicular Furniture and Accessories. Status: active.
NSN 2540-00-777-9802 has 1 manufacturer part number on file: 7779802 (Army, United States Department of the Dba Rock Island Arsenal Jmtc).
Key specifications for 7779802: Keyway Depth: 0.280 INCHES NOMINAL IN; Shank End Keyway: PROVIDED; Ring Inside Diameter: 3.000 INCHES NOMINAL IN; Taper Per Foot: 4.800 INCHES NOMINAL IN. 18 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.
NSN 2540-00-777-9802 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.