The Washer,flat, cataloged under National Stock Number 5310-01-133-1106, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-133-1106 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Outside Left Corner Chamfer Angle | 45.0 DEGREES NOMINAL |
| Surface Treatment Document and Classification | PS 13001 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 1.000 INCHES NOMINAL IN |
| Material Document and Classification | MS5659 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | BLANK RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.800 INCHES NOMINAL IN |
| Thickness | 0.200 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 |
| Reference | Meaning |
|---|---|
| 10109672 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 3014059-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-133-1106 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6130-01-298-4087. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-01-133-1106: Outside Left Corner Chamfer Angle: 45.0 DEGREES NOMINAL; Surface Treatment Document and Classification: PS 13001 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 1.000 INCHES NOMINAL IN; Material Document and Classification: MS5659 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 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.