The Washer,lock, cataloged under National Stock Number 5310-01-526-0787, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corp. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-526-0787 |
| Primary Part Number | ALH-100424-FIND 6 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Systems Corp |
| Status | ACTIVE |
| Supplementary Features | 4920-01-511-0092 |
| Hardness Rating | 34.0 ROCKWELL C NOMINAL |
| Style Designator | FLAT INTERNAL TEETH |
| Outside Diameter | 0.381 INCHES NOMINAL IN |
| Material Thickness | 0.018 INCHES MINIMUM AND 0.024 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hole Diameter | 0.204 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 |
|---|---|
| ALH-100424-FIND 6 PRIMARY | Northrop Grumman Systems Corp (USA) |
| 98449A530 | Mcmaster-Carr Supply Co (USA) |
| Reference | Meaning |
|---|---|
| 98449A530 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-526-0787 is a Washer,lock, manufactured by Northrop Grumman Systems Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-526-0787 has 2 manufacturer part numbers on file: ALH-100424-FIND 6 (Northrop Grumman Systems Corp), 98449A530 (Mcmaster-Carr Supply Co).
Key specifications for ALH-100424-FIND 6: Supplementary Features: 4920-01-511-0092; Hardness Rating: 34.0 ROCKWELL C NOMINAL; Style Designator: FLAT INTERNAL TEETH; Outside Diameter: 0.381 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.