The Washer,lock, cataloged under National Stock Number 5310-01-487-4145, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-487-4145 |
| Primary Part Number | 397533-1 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc |
| Status | ACTIVE |
| Heat Treatment | H-32 STRAIN HARDENED, STABILIZED TO 1/4 HARD OR H-34 STRAIN HARDENED, STABILIZED TO 1/2 HARD |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Material Document and Classification | QQ-A-250/8,A95052 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.144 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN |
| Material Thickness | 0.034 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 5052 OVERALL |
| Hole Diameter | 0.089 INCHES MINIMUM AND 0.099 INCHES MAXIMUM 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 |
|---|---|
| 397533-1 PRIMARY | Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc (USA) |
NSN 5310-01-487-4145 is a Washer,lock, manufactured by Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-487-4145 has 1 manufacturer part number on file: 397533-1 (Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc).
Key specifications for 397533-1: Heat Treatment: H-32 STRAIN HARDENED, STABILIZED TO 1/4 HARD OR H-34 STRAIN HARDENED, STABILIZED TO 1/2 HARD; Style Designator: SPLIT HELICAL-RIGHT HAND; Material Document and Classification: QQ-A-250/8,A95052 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.144 INCHES MINIMUM AND 0.164 INCHES MAXIMUM 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.