The Washer,flat, cataloged under National Stock Number 5310-00-444-7987, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Bell Boeing Joint Project Office. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares 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 | Bell Boeing Joint Project Office (CAGE 3B1R2); Timken Aerospace, Inc Dba Torrington Product (CAGE 60380); Mpb Corporation Dba Mpb Corp (CAGE 78118); Honeywell International Inc. Div Aerospace - Torrance (CAGE 70210); Hamilton Sundstrand Corporation Dba Collins Aerospace (CAGE 73030) |
| Parameter | Value |
|---|---|
| NSN | 5310-00-444-7987 |
| Primary Part Number | 592361-13 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Bell Boeing Joint Project Office |
| 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 |
|---|---|
| 592361-13 PRIMARY | Bell Boeing Joint Project Office (USA) |
| TRB1423 PRIMARY | Timken Aerospace, Inc Dba Torrington Product (USA) |
| TRB1423 PRIMARY | Mpb Corporation Dba Mpb Corp (USA) |
| 7T1-007-9063 | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| 592361-13 | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
NSN 5310-00-444-7987 is a Washer,flat, manufactured by Bell Boeing Joint Project Office, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-444-7987 has 5 manufacturer part numbers on file: 592361-13 (Bell Boeing Joint Project Office), TRB1423 (Timken Aerospace, Inc Dba Torrington Product), TRB1423 (Mpb Corporation Dba Mpb Corp), 7T1-007-9063 (Honeywell International Inc. Div Aerospace - Torrance), 592361-13 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
1 possible match (shared part number, not a government interchangeability claim): 3120-01-439-7579. 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.