The Washer,lock, cataloged under National Stock Number 5310-01-009-6725, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is L3harris Technologies, Inc Div Space & Airborne Systems. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-009-6725 |
| Primary Part Number | G440056-1 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | L3harris Technologies, Inc Div Space & Airborne Systems |
| Status | ACTIVE |
| Style Designator | FLAT INTERNAL TEETH |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 0.867 INCHES MINIMUM AND 0.867 INCHES MINIMUM AND 0.883 INCHES MAXIMUM0.883 INCHES MAXIMUM IN |
| Material Thickness | 0.040 INCHES NOMINAL0.040 INCHES NOMINAL IN |
| Hole Diameter | 0.512 INCHES MINIMUM AND 0.512 INCHES MINIMUM AND 0.529 INCHES MAXIMUM0.529 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 |
|---|---|
| G440056-1 | L3harris Technologies, Inc Div Space & Airborne Systems (USA) |
| Reference | Meaning |
|---|---|
| 410894-50 | 3/2 Design control — primary reference U.S. Government activity |
| 1724-00 | 5/9 Secondary reference Itw Shakeproof Automotive Products |
NSN 5310-01-009-6725 is a Washer,lock, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-009-6725 has 1 manufacturer part number on file: G440056-1 (L3harris Technologies, Inc Div Space & Airborne Systems).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-690-8084. Verify interchangeability with system specifications before substitution.
Key specifications for G440056-1: Style Designator: FLAT INTERNAL TEETH; Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL; Outside Diameter: 0.867 INCHES MINIMUM AND 0.867 INCHES MINIMUM AND 0.883 INCHES MAXIMUM0.883 INCHES MAXIMUM IN; Material Thickness: 0.040 INCHES NOMINAL0.040 INCHES NOMINAL IN. 5 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.