The Washer,flat, cataloged under National Stock Number 5310-00-475-9075, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-475-9075 |
| Primary Part Number | 1230862 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Overall Diameter | 0.375 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | PLASTIC OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.166 INCHES MINIMUM AND 0.174 INCHES MAXIMUM IN |
| Thickness | 0.093 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 |
|---|---|
| 1230862 PRIMARY | The Boeing Company (USA) |
| 1230862 | Plastifab, Inc. Dba Plastifab Leed Plastics Div Plasifab Inc. (USA) |
| Reference | Meaning |
|---|---|
| 1230862 | 5/9 Secondary reference U.S. Government activity |
| 1230862 | 5/9 Secondary reference Plastifab Incorporated |
NSN 5310-00-475-9075 is a Washer,flat, manufactured by The Boeing Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-475-9075 has 2 manufacturer part numbers on file: 1230862 (The Boeing Company), 1230862 (Plastifab, Inc. Dba Plastifab Leed Plastics Div Plasifab Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5342-01-655-3199. Verify interchangeability with system specifications before substitution.
Key specifications for 1230862: Overall Diameter: 0.375 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: PLASTIC OVERALL. 7 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.