The Washer,lock, cataloged under National Stock Number 5310-01-149-1978, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Carrier Corp. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-149-1978 |
| Primary Part Number | 17-40073-00 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Carrier Corp |
| Status | ACTIVE |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Outside Diameter | 0.294 INCHES MAXIMUM IN |
| Material Thickness | 0.042 INCHES NOMINAL IN |
| Specification/standard Data | 10855-AU61ML131 MANUFACTURERS STANDARD |
| Surface Treatment | PHOSPHATE OVERALL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hole Diameter | 0.190 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 |
|---|---|
| AU61ML131 | Carrier Corp (USA) |
| AU61ML131-012 | Carrier Corp (USA) |
| 17-40073-00 PRIMARY | Carrier Corp (USA) |
NSN 5310-01-149-1978 is a Washer,lock, manufactured by Carrier Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-149-1978 has 3 manufacturer part numbers on file: AU61ML131 (Carrier Corp), AU61ML131-012 (Carrier Corp), 17-40073-00 (Carrier Corp).
Key specifications for 17-40073-00: Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 0.294 INCHES MAXIMUM IN; Material Thickness: 0.042 INCHES NOMINAL IN; Specification/standard Data: 10855-AU61ML131 MANUFACTURERS STANDARD. 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.