The Washer,flat, cataloged under National Stock Number 5310-01-502-7609, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Konrad Marine Inc Div Konrad Marine. Government technical data includes 4 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 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-502-7609 |
| Primary Part Number | 10-442 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Konrad Marine Inc Div Konrad Marine |
| Status | ACTIVE |
| Overall Diameter | 0.922 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Center Hole Shape Style | ROUND |
| 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 |
|---|---|
| 10-442 PRIMARY | Konrad Marine Inc Div Konrad Marine (USA) |
| 30-002 IT 5 | Konrad Marine Inc Div Konrad Marine (USA) |
NSN 5310-01-502-7609 is a Washer,flat, manufactured by Konrad Marine Inc Div Konrad Marine, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-502-7609 has 2 manufacturer part numbers on file: 10-442 (Konrad Marine Inc Div Konrad Marine), 30-002 IT 5 (Konrad Marine Inc Div Konrad Marine).
2 possible matches (shared part number, not a government interchangeability claim): 4921-01-573-8356, 5330-01-660-7123. Verify interchangeability with system specifications before substitution.
Key specifications for 10-442: Overall Diameter: 0.922 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; End Item Identification: STERN DRIVE. 4 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.