The Washer,flat, cataloged under National Stock Number 5310-01-309-0324, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Souriau Usa, Inc. Dba Souriau Usa 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-309-0324 |
| Primary Part Number | GW502CB50 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Souriau Usa, Inc. Dba Souriau Usa Inc |
| Status | ACTIVE |
| Overall Diameter | 1.062 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN |
| Thickness | 0.094 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 |
|---|---|
| GW502CB50 | Souriau Usa, Inc. Dba Souriau Usa Inc (USA) |
| Reference | Meaning |
|---|---|
| 50FW | C/1 Advisory reference — outside the item-of-supply concept Burndy Llc |
| 50FW | 3/9 Design control — primary reference Souriau Usa, Inc. Dba Souriau Usa Inc |
| GW502CB50 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
NSN 5310-01-309-0324 is a Washer,flat, manufactured by Souriau Usa, Inc. Dba Souriau Usa Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-309-0324 has 1 manufacturer part number on file: GW502CB50 (Souriau Usa, Inc. Dba Souriau Usa Inc).
1 possible match (shared part number, not a government interchangeability claim): 4810-01-325-1645. Verify interchangeability with system specifications before substitution.
Key specifications for GW502CB50: Overall Diameter: 1.062 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: COPPER ALLOY OVERALL. 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.