The Washer,flat, cataloged under National Stock Number 5310-01-673-6442, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Container Research Corp Dba Container Research Corp Div Containr Research Corporation. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Washer,flat |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Container Research Corp Dba Container Research Corp Div Containr Research Corporation (CAGE 05259) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-673-6442 |
| Primary Part Number | 839E005-9 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Container Research Corp Dba Container Research Corp Div Containr Research Corporation |
| Status | ACTIVE |
| 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 |
|---|---|
| 839E005-9 PRIMARY | Container Research Corp Dba Container Research Corp Div Containr Research Corporation (USA) |
| Reference | Meaning |
|---|---|
| 839E005 | D/9 Drawing number reference only Container Research Corp Dba Container Research Corp Div Containr Research Corporation |
NSN 5310-01-673-6442 is a Washer,flat, manufactured by Container Research Corp Dba Container Research Corp Div Containr Research Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-673-6442 has 1 manufacturer part number on file: 839E005-9 (Container Research Corp Dba Container Research Corp Div Containr Research Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-673-6451, 5310-01-673-9333. Verify interchangeability with system specifications before substitution.
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.