The Washer,flat, cataloged under National Stock Number 5310-01-049-4078, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is General Dynamics Land Systems Canadacorp. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-049-4078 |
| Primary Part Number | 10639200 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | General Dynamics Land Systems Canadacorp |
| Status | ACTIVE |
| Overall Diameter | 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN |
| Material Document and Classification | L-P-410 6/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | PLASTIC POLYHEXAMETHYLENE ADIPAMIDE OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.338 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN |
| Thickness | 0.062 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 |
|---|---|
| 10639200 | General Dynamics Land Systems Canadacorp (CAN) |
| Reference | Meaning |
|---|---|
| 5610-146-62 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-049-4078 is a Washer,flat, manufactured by General Dynamics Land Systems Canadacorp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-049-4078 has 1 manufacturer part number on file: 10639200 (General Dynamics Land Systems Canadacorp).
Key specifications for 10639200: Overall Diameter: 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN; Material Document and Classification: L-P-410 6/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; 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.