The Washer,flat, cataloged under National Stock Number 5310-01-689-7000, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-689-7000 |
| Primary Part Number | J2655FBR0250S1P |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Overall Diameter | 0.727 INCHES MINIMUM AND 0.749 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.276 INCHES MINIMUM AND 0.296 INCHES MAXIMUM IN |
| Thickness | 0.056 INCHES MINIMUM AND 0.071 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 |
|---|---|
| SAE-J2655 | Sae International Dba Sae International (USA) |
| 782-7666264 ITEM NO.649 | Naval Sea Systems Command (USA) |
| J2655FBR0250S1P PRIMARY | Sae International Dba Sae International (USA) |
NSN 5310-01-689-7000 is a Washer,flat, manufactured by Sae International Dba Sae International, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-689-7000 has 3 manufacturer part numbers on file: SAE-J2655 (Sae International Dba Sae International), 782-7666264 ITEM NO.649 (Naval Sea Systems Command), J2655FBR0250S1P (Sae International Dba Sae International).
4 possible matches (shared part number, not a government interchangeability claim): 5310-01-733-5262, 5310-01-733-5286, 5310-01-733-5885. Verify interchangeability with system specifications before substitution.
Key specifications for J2655FBR0250S1P: Overall Diameter: 0.727 INCHES MINIMUM AND 0.749 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Part Name Assigned by Controlling Agency: WASHER,FLAT,ROUND. 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.