The Coupler,drawbar,ring, cataloged under National Stock Number 2540-01-643-6969, is classified within Federal Supply Class 2540 (Vehicular Furniture and Accessories) of the Vehicular Equipment Components group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 10 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 | 2540-01-643-6969 |
| Primary Part Number | 12577730 |
| Item Name | Coupler,drawbar,ring |
| FSC / FSG | 2540 / 25 — Vehicular Furniture and Accessories |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Mounting Hole Quantity | 6 |
| Shank End Keyway | NOT PROVIDED |
| Ring Inside Diameter | 4.610 INCHES MINIMUM AND 4.640 INCHES MAXIMUM IN |
| Center to Center Distance Between Mounting Holes | 4.750 INCHES NOMINAL IN |
| Style Designator | FLANGE FACE W/POSITIONING PROTRUSION |
| Mounting Hole Diameter | 1.110 INCHES MINIMUM AND 1.140 INCHES MAXIMUM IN |
| Height | 11.372 INCHES MINIMUM AND 11.492 INCHES MAXIMUM IN |
| Width | 7.57 INCHES MINIMUM AND 7.69 INCHES MAXIMUM IN |
| Center to Center Distance Between Second and Third Mounting Holes | 7.00 INCHES NOMINAL IN |
| Shank End Thread Provision | UNTHREADED |
| 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 |
|---|---|
| 12577730 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 2540-01-643-6969 is a Coupler,drawbar,ring, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2540, Vehicular Furniture and Accessories. Status: active.
NSN 2540-01-643-6969 has 1 manufacturer part number on file: 12577730 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12577730: Mounting Hole Quantity: 6; Shank End Keyway: NOT PROVIDED; Ring Inside Diameter: 4.610 INCHES MINIMUM AND 4.640 INCHES MAXIMUM IN; Center to Center Distance Between Mounting Holes: 4.750 INCHES NOMINAL IN. 10 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.