The Washer,flat, cataloged under National Stock Number 5310-00-018-0249, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Honeywell International Inc Div Aerospace-South Bend (bendix Dr). Government technical data includes 11 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. 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 | 5310-00-018-0249 |
| Primary Part Number | 628461 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Honeywell International Inc Div Aerospace-South Bend (bendix Dr) |
| Status | ACTIVE |
| Surface Finish | 100.0 MICROINCHES TOP |
| Surface Finish | 100.0 MICROINCHES BOTTOM |
| Overall Diameter | 0.365 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5610 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PHOSPHATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 416F OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.258 INCHES MINIMUM AND 0.268 INCHES MAXIMUM IN |
| Thickness | 0.024 INCHES MINIMUM AND 0.025 INCHES MAXIMUM 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 |
|---|---|
| 628461 PRIMARY | Honeywell International Inc Div Aerospace-South Bend (bendix Dr) (USA) |
NSN 5310-00-018-0249 is a Washer,flat, manufactured by Honeywell International Inc Div Aerospace-South Bend (bendix Dr), classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-018-0249 has 1 manufacturer part number on file: 628461 (Honeywell International Inc Div Aerospace-South Bend (bendix Dr)).
2 possible matches (shared part number, not a government interchangeability claim): 5310-00-944-6921, 4710-01-273-3748. Verify interchangeability with system specifications before substitution.
Key specifications for 628461: Surface Finish: 100.0 MICROINCHES TOP; Surface Finish: 100.0 MICROINCHES BOTTOM; Overall Diameter: 0.365 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN; Material Document and Classification: AMS5610 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 11 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.