The Washer,lock, cataloged under National Stock Number 5310-01-502-2143, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The American Society of Mechanical Engineers. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 5310-01-502-2143 |
| Primary Part Number | AEW07X250000GD7AA1 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The American Society of Mechanical Engineers |
| Status | ACTIVE |
| Hardness Rating | 38.0 ROCKWELL C NOMINAL |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Outside Diameter | 0.487 INCHES NOMINAL IN |
| Material Thickness | 0.062 INCHES NOMINAL IN |
| Surface Treatment | ZINC OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 0.260 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| AEW07X250000GD7AA1 PRIMARY | The American Society of Mechanical Engineers (USA) |
| Reference | Meaning |
|---|---|
| B18.21.1 | 5/1 Secondary reference The American Society of Mechanical Engineers |
| 91102A750 | 5/9 Secondary reference Mcmaster-Carr Supply Co |
NSN 5310-01-502-2143 is a Washer,lock, manufactured by The American Society of Mechanical Engineers, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-502-2143 has 1 manufacturer part number on file: AEW07X250000GD7AA1 (The American Society of Mechanical Engineers).
2 possible matches (shared part number, not a government interchangeability claim): 5310-01-572-6611, 5310-01-611-2340. Verify interchangeability with system specifications before substitution.
Key specifications for AEW07X250000GD7AA1: Hardness Rating: 38.0 ROCKWELL C NOMINAL; Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 0.487 INCHES NOMINAL IN; Material Thickness: 0.062 INCHES NOMINAL IN. 7 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.