The Washer,flat, cataloged under National Stock Number 5310-01-618-5435, 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 | 5310-01-618-5435 |
| Primary Part Number | S8157N237-020 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Honeywell International Inc. Div Aerospace - Torrance |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES ALL SURFACES |
| Overall Diameter | 0.410 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-6721,MIL-S-5059 OR MIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Specification/standard Data | 70210-S8157 MANUFACTURERS SPECIFICATION |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 321 OR STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 316 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.190 INCHES MINIMUM AND 0.195 INCHES MAXIMUM IN |
| Thickness | 0.018 INCHES MINIMUM AND 0.022 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 |
|---|---|
| S8157N237-020 | Boeing Distribution Services X, Inc. (USA) |
| S8157N237-020 PRIMARY | Honeywell International Inc. Div Aerospace - Torrance (USA) |
NSN 5310-01-618-5435 is a Washer,flat, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-618-5435 has 2 manufacturer part numbers on file: S8157N237-020 (Boeing Distribution Services X, Inc.), S8157N237-020 (Honeywell International Inc. Div Aerospace - Torrance).
Key specifications for S8157N237-020: Surface Finish: 125.0 MICROINCHES ALL SURFACES; Overall Diameter: 0.410 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-6721,MIL-S-5059 OR MIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 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.