The Washer,flat, cataloged under National Stock Number 5310-01-172-3303, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Dept of the Army U S Army Electronics Command Night Vision Laboratory. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-172-3303 |
| Primary Part Number | SM-C-968456 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Dept of the Army U S Army Electronics Command Night Vision Laboratory |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES ALL SURFACES |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.588 INCHES MINIMUM AND 0.598 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 301 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.256 INCHES MINIMUM AND 0.261 INCHES MAXIMUM IN |
| Thickness | 0.125 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 |
| Part Number | Manufacturer |
|---|---|
| SM-C-968456 PRIMARY | Dept of the Army U S Army Electronics Command Night Vision Laboratory (USA) |
| Reference | Meaning |
|---|---|
| SM-C-968456 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-172-3303 is a Washer,flat, manufactured by Dept of the Army U S Army Electronics Command Night Vision Laboratory, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-172-3303 has 1 manufacturer part number on file: SM-C-968456 (Dept of the Army U S Army Electronics Command Night Vision Laboratory).
Key specifications for SM-C-968456: Surface Finish: 125.0 MICROINCHES ALL SURFACES; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.588 INCHES MINIMUM AND 0.598 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 11 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.