The Washer,flat, cataloged under National Stock Number 5310-01-220-3102, 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 - Torrance. Government technical data includes 10 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-220-3102 |
| Primary Part Number | S8154-82C025 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Honeywell International Inc. Div Aerospace - Torrance |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES BOTTOM |
| Surface Finish | 63.0 MICROINCHES TOP |
| Overall Diameter | 1.110 INCHES MINIMUM AND 1.124 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-5059,COND 1/4 HARD MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059,COND 1/2 HARD MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059,COND HARD MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059,COND 1/4 HARD,FINISH NO. 2B MIL SPEC 2ND MATERIAL RESPONSE OR ASTM A582 ASSN STD 3RD MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 303 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.525 INCHES MINIMUM AND 0.535 INCHES MAXIMUM IN |
| Thickness | 0.025 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 |
|---|---|
| S8154-82C025 | Boeing Distribution Services X, Inc. (USA) |
| S8154-82C025 PRIMARY | Honeywell International Inc. Div Aerospace - Torrance (USA) |
NSN 5310-01-220-3102 is a Washer,flat, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-220-3102 has 2 manufacturer part numbers on file: S8154-82C025 (Boeing Distribution Services X, Inc.), S8154-82C025 (Honeywell International Inc. Div Aerospace - Torrance).
Key specifications for S8154-82C025: Surface Finish: 63.0 MICROINCHES BOTTOM; Surface Finish: 63.0 MICROINCHES TOP; Overall Diameter: 1.110 INCHES MINIMUM AND 1.124 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-5059,COND 1/4 HARD MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059,COND 1/2 HARD MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059,COND HARD MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059,COND 1/4 HARD,FINISH NO. 2B MIL SPEC 2ND MATERIAL RESPONSE OR ASTM A582 ASSN STD 3RD MATERIAL RESPONSE OVERALL. 10 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.