The Washer,flat, cataloged under National Stock Number 5310-01-487-2231, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Du Pont E I De Nemours and Co Inc Security Director/legal Dept. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-487-2231 |
| Primary Part Number | DELRIN 100 4.250DIA |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Du Pont E I De Nemours and Co Inc Security Director/legal Dept |
| Status | ACTIVE |
| Overall Diameter | 4.250 INCHES NOMINAL IN |
| Supplementary Features | SLIDE WASHER |
| Peripheral Shape Style | ROUND |
| Material | PLASTIC ACETAL OVERALL |
| 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 |
|---|---|
| DELRIN 100 4.250DIA PRIMARY | Du Pont E I De Nemours and Co Inc Security Director/legal Dept (USA) |
| 501-7055651 ITEM 121 | Naval Sea Systems Command (USA) |
NSN 5310-01-487-2231 is a Washer,flat, manufactured by Du Pont E I De Nemours and Co Inc Security Director/legal Dept, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-487-2231 has 2 manufacturer part numbers on file: DELRIN 100 4.250DIA (Du Pont E I De Nemours and Co Inc Security Director/legal Dept), 501-7055651 ITEM 121 (Naval Sea Systems Command).
Key specifications for DELRIN 100 4.250DIA: Overall Diameter: 4.250 INCHES NOMINAL IN; Supplementary Features: SLIDE WASHER; Special Features: SPECIFIC MATL IS DELRIN 100 DU PONT; Peripheral Shape Style: ROUND. 4 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.