The Washer,flat, cataloged under National Stock Number 5310-01-101-3376, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Dit-Mco International Llc. Government technical data includes 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-101-3376 |
| Primary Part Number | 021-01004-0001 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Dit-Mco International Llc |
| Status | ACTIVE |
| Overall Diameter | 0.281 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Color | BLACK OVERALL |
| Peripheral Shape Style | ROUND |
| Material | PLASTIC POLYAMIDE NYLON OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.112 INCHES NOMINAL IN |
| Thickness | 0.020 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 |
|---|---|
| 021-01004-0001 PRIMARY | Dit-Mco International Llc (USA) |
| Reference | Meaning |
|---|---|
| 021-1004-1 | 5/9 Secondary reference Dit-Mco International Llc |
| N440-9-32-020 | 5/9 Secondary reference U.S. Government activity |
| HNNY-440BK | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-101-3376 is a Washer,flat, manufactured by Dit-Mco International Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-101-3376 has 1 manufacturer part number on file: 021-01004-0001 (Dit-Mco International Llc).
Key specifications for 021-01004-0001: Overall Diameter: 0.281 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Color: BLACK OVERALL; Peripheral Shape Style: ROUND. 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.