The Washer,recessed, cataloged under National Stock Number 5310-00-209-4200, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-209-4200 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Style Designator | RECESSED |
| Material Document and Classification | AMS 5613 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Material Thickness | 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN |
| Recess Diameter | 0.182 INCHES NOMINAL IN |
| Surface Treatment | OXIDE FILM OVERALL |
| Material | STEEL COMP 410 OVERALL |
| Hole Diameter | 0.166 INCHES NOMINAL IN |
| Recess Angle | 90.0 DEGREES NOMINAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| P16019 | 3/9 Design control — primary reference Precision Engines Llc |
| P16019 | 5/9 Secondary reference Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St) |
| P16019 | 5/9 Secondary reference Precision Airmotive Llc Dba Precision Airmotive |
| P16019 | 5/9 Secondary reference Honeywell International Inc Div Aerospace-South Bend (bendix Dr) |
NSN 5310-00-209-4200 is a Washer,recessed, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 2530-01-186-0547. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-00-209-4200: Style Designator: RECESSED; Material Document and Classification: AMS 5613 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN; Material Thickness: 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN. 9 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.