The Washer,flat, cataloged under National Stock Number 5310-01-071-8167, 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 8 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-071-8167 |
| Primary Part Number | S8154-131C025 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Honeywell International Inc. Div Aerospace - Torrance |
| Status | ACTIVE |
| Overall Diameter | 0.415 INCHES MINIMUM AND 0.425 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-5059 COND 1/4 HARD OR 1/2 HARD OR FULL HARD MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059 COND 1/4 HARD FINISH NO. 2B MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 301 OR STEEL COMP 302 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.255 INCHES MINIMUM AND 0.265 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 |
|---|---|
| S8154-131C025 PRIMARY | Honeywell International Inc. Div Aerospace - Torrance (USA) |
NSN 5310-01-071-8167 is a Washer,flat, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-071-8167 has 1 manufacturer part number on file: S8154-131C025 (Honeywell International Inc. Div Aerospace - Torrance).
Key specifications for S8154-131C025: Overall Diameter: 0.415 INCHES MINIMUM AND 0.425 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-5059 COND 1/4 HARD OR 1/2 HARD OR FULL HARD MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059 COND 1/4 HARD FINISH NO. 2B MIL SPEC 2ND MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND. 8 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.