The Washer,flat, cataloged under National Stock Number 5310-01-455-4956, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-455-4956 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Overall Diameter | 1.490 INCHES MINIMUM AND 1.510 INCHES MAXIMUM IN |
| Criticality Code Justification | FEAT |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | ALUMINUM ALLOY 6061 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.183 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN |
| Thickness | 0.022 INCHES MINIMUM AND 0.042 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 | Y |
| Reference | Meaning |
|---|---|
| 59A64135-7 | 3/2 Design control — primary reference U.S. Government activity |
| 5310PL1500145 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5310-01-455-4956 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-455-4956: Overall Diameter: 1.490 INCHES MINIMUM AND 1.510 INCHES MAXIMUM IN; Criticality Code Justification: FEAT; Cross-Sectional Shape Style: RECTANGULAR; Special Features: ITEM IS NOT CSI BUT HAS CRITICAL FEATURES SUCH AS HEAT TREATMENT, SURFACE FINISH, OR MATERIAL TYPE AND SPECIAL INSPECTION REQUIREMENTS SUCH AS MAGNETIC PARTICLE INSP. OR FLUORESCENT PENETRANT INSPECTION. 8 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.