The Washer,flat, cataloged under National Stock Number 5310-01-009-0050, 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 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-009-0050 |
| Primary Part Number | S8157N288-020 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Honeywell International Inc. Div Aerospace - Torrance |
| Status | ACTIVE |
| Overall Diameter | 0.365 INCHES MINIMUM AND 0.373 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-6721 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-S-5059 MIL SPEC 2ND MATERIAL RESPONSE AND MIL-S-5059 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-7720 MIL SPEC 3RD MATERIAL RESPONSE AND MIL-S-5059 MIL SPEC 4TH MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Specification/standard Data | 70210-S8157 MANUFACTURERS STANDARD |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 321 OR STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 316 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.126 INCHES MINIMUM AND 0.129 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 |
|---|---|
| S8157N288-020 | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA) |
| S8157N288-020 PRIMARY | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| Reference | Meaning |
|---|---|
| S8157N288-020 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-009-0050 is a Washer,flat, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-009-0050 has 2 manufacturer part numbers on file: S8157N288-020 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)), S8157N288-020 (Honeywell International Inc. Div Aerospace - Torrance).
Key specifications for S8157N288-020: Overall Diameter: 0.365 INCHES MINIMUM AND 0.373 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-6721 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-S-5059 MIL SPEC 2ND MATERIAL RESPONSE AND MIL-S-5059 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-7720 MIL SPEC 3RD MATERIAL RESPONSE AND MIL-S-5059 MIL SPEC 4TH MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Specification/standard Data: 70210-S8157 MANUFACTURERS STANDARD. 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.