The Washer,flat, cataloged under National Stock Number 5310-01-507-7025, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-507-7025 |
| Primary Part Number | 7326304-5 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35, TYPE VI OR VII(S/S BY SAE-AMS-QQ-P-35) FED SPEC 1ST TREATMENT RESPONSE OVERALL |
| Overall Diameter | 1.680 INCHES NOMINAL IN |
| Material Document and Classification | ASTM-A240, TYPE 304, COND A, FINISH NO. 2B ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.672 INCHES MINIMUM AND 0.674 INCHES MAXIMUM IN |
| Thickness | 0.060 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 |
NSN 5310-01-507-7025 is a Washer,flat, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-507-7025 has 2 manufacturer part numbers on file: 7326304-5 (Naval Sea Systems Command), 7326304-5 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-507-9459. Verify interchangeability with system specifications before substitution.
Key specifications for 7326304-5: Surface Treatment Document and Classification: QQ-P-35, TYPE VI OR VII(S/S BY SAE-AMS-QQ-P-35) FED SPEC 1ST TREATMENT RESPONSE OVERALL; Overall Diameter: 1.680 INCHES NOMINAL IN; Material Document and Classification: ASTM-A240, TYPE 304, COND A, FINISH NO. 2B ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 10 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.