The Pintle Assembly,towing, cataloged under National Stock Number 2540-01-189-2193, is classified within Federal Supply Class 2540 (Vehicular Furniture and Accessories) of the Vehicular Equipment Components group. The manufacturer of record is Federal Commercial Item Description Promulgated by General Services Administration Washington DC. Government technical data includes 7 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: AY.
| Parameter | Value |
|---|---|
| NSN | 2540-01-189-2193 |
| Primary Part Number | AA52550-1 |
| Item Name | Pintle Assembly,towing |
| FSC / FSG | 2540 / 25 — Vehicular Furniture and Accessories |
| Manufacturer | Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| Status | ACTIVE |
| Coupler Type | MANUAL |
| Design Type | RIGID |
| Bolt Hole Diameter | 0.500 INCHES NOMINAL IN |
| Throat Opening Size | 1.875 INCHES NOMINAL IN |
| Width | 4.500 INCHES NOMINAL IN |
| Flange Bolt Hole Quantity | 4 |
| Mounting Type | FLANGE |
| 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 | AY |
| Part Number | Manufacturer |
|---|---|
| AA52550-1 | Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA) |
| Reference | Meaning |
|---|---|
| AA52550-1 | 5/9 Secondary reference The Wallace Forge Co |
| A-A-52550 | 4/1 Identification reference Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| B-6/W BRACKETS | 5/9 Secondary reference The Wallace Forge Co |
| T-60-A0S-L | 5/9 Secondary reference Saf-Holland, Inc. |
| 5568593 | 5/1 Secondary reference Am General Llc |
| B-6 | 5/9 Secondary reference The Wallace Forge Co |
NSN 2540-01-189-2193 is a Pintle Assembly,towing, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 2540, Vehicular Furniture and Accessories. Status: active.
NSN 2540-01-189-2193 has 1 manufacturer part number on file: AA52550-1 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC).
2 possible matches (shared part number, not a government interchangeability claim): 2540-01-570-4216, 2540-01-600-0798. Verify interchangeability with system specifications before substitution.
Key specifications for AA52550-1: Overall Height: 2.875 INCHES NOMINAL IN; Coupler Type: MANUAL; Design Type: RIGID; Bolt Hole Diameter: 0.500 INCHES NOMINAL IN. 7 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.