The Washer,flat, cataloged under National Stock Number 5310-01-733-5262, 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 10 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-733-5262 |
| Primary Part Number | J2655FBN1250N5 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Overall Diameter | 2.243 INCHES MINIMUM AND 2.280 INCHES MAXIMUM IN |
| Hardness Rating | 24.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | QQ-N-286, GRADE 500, ANNEALED AND AGE HARDENED FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Specification/standard Data | 0U583-SAE J2655 INTERNATIONAL STD/SPEC |
| Peripheral Shape Style | ROUND |
| Material | NICKEL ALLOY OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 1.305 INCHES MINIMUM AND 1.342 INCHES MAXIMUM IN |
| Thickness | 0.146 INCHES MINIMUM AND 0.174 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 |
|---|---|
| J2655FBN1250N5 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| J2655FBN1250N5 | 5/9 Secondary reference U.S. Government activity |
| SAE J2655 | 3/1 Design control — primary reference Sae International Dba Sae International |
| LOA006320-148 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 218156507 | 5/2 Secondary reference U.S. Government activity |
| R4333008-148 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-733-5262 is a Washer,flat, manufactured by Sae International Dba Sae International, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-733-5262 has 1 manufacturer part number on file: J2655FBN1250N5 (Sae International Dba Sae International).
3 possible matches (shared part number, not a government interchangeability claim): 5310-01-733-5286, 5310-01-733-5885, 5310-01-733-5907. Verify interchangeability with system specifications before substitution.
Key specifications for J2655FBN1250N5: Overall Diameter: 2.243 INCHES MINIMUM AND 2.280 INCHES MAXIMUM IN; Hardness Rating: 24.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM; Material Document and Classification: QQ-N-286, GRADE 500, ANNEALED AND AGE HARDENED FED SPEC 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.