The Washer,flat, cataloged under National Stock Number 5310-01-232-8491, 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8 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-232-8491 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | ASTM B633,TY 2,CL 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 10.57 MILLIMETERS MINIMUM AND 11.00 MILLIMETERS MAXIMUM MM |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | ZINC AND CHROMATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Thickness | 1.00 MILLIMETERS MINIMUM AND 1.40 MILLIMETERS MAXIMUM MM |
| 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 |
|---|---|
| B1822BS050N | 3/2 Design control — primary reference U.S. Government activity |
| 000125 005313 | C/1 Advisory reference — outside the item-of-supply concept Daimler Truck North America Llc |
NSN 5310-01-232-8491 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-232-8491: Surface Treatment Document and Classification: ASTM B633,TY 2,CL 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 10.57 MILLIMETERS MINIMUM AND 11.00 MILLIMETERS MAXIMUM MM; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: ZINC AND CHROMATE OVERALL. 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.