The Washer,recessed, cataloged under National Stock Number 5310-01-202-8989, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-202-8989 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Style Designator | RECESSED |
| Material Document and Classification | AMS 6370 ASSN STD SINGLE MATERIAL RESPONSE AND MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OR AMS 6280 ASSN STD SINGLE MATERIAL RESPONSE AND MIL-S-6050 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 5.390 INCHES NOMINAL IN |
| Recess Depth | 1.020 INCHES MINIMUM AND 1.030 INCHES MAXIMUM IN |
| Material Thickness | 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| Material | STEEL COMP 4130 OR STEEL COMP 8630 OVERALL |
| Hole Diameter | 4.540 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 |
| Reference | Meaning |
|---|---|
| 2608489 | 3/9 Design control — primary reference Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St) |
| 2608489 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-202-8989 is a Washer,recessed, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-202-8989: Overall Height: 1.090 INCHES MINIMUM AND 1.110 INCHES MAXIMUM IN; Style Designator: RECESSED; Material Document and Classification: AMS 6370 ASSN STD SINGLE MATERIAL RESPONSE AND MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OR AMS 6280 ASSN STD SINGLE MATERIAL RESPONSE AND MIL-S-6050 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 5.390 INCHES NOMINAL IN. 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.