The Washer Blank, cataloged under National Stock Number 5310-00-554-5079, 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 6 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-554-5079 |
| Primary Part Number | S8157N129-020 |
| Item Name | Washer Blank |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Honeywell International Inc. Div Aerospace - Torrance |
| Status | ACTIVE |
| Overall Diameter | 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-5059 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-764 FED SPEC 3RD MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6721 MIL SPEC 5TH MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | BLANK RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 316 OR STEEL COMP 321 OVERALL |
| 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 | F |
| Part Number | Manufacturer |
|---|---|
| S8157N129-020 PRIMARY | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| S8157N129-020 | Boeing Distribution Services X, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 10121501 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| S8157N129-020 | 5/9 Secondary reference Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| S8157N129-020 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-00-554-5079 is a Washer Blank, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-554-5079 has 2 manufacturer part numbers on file: S8157N129-020 (Honeywell International Inc. Div Aerospace - Torrance), S8157N129-020 (Boeing Distribution Services X, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5915-00-897-5512. Verify interchangeability with system specifications before substitution.
Key specifications for S8157N129-020: Overall Diameter: 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-5059 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5059 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-764 FED SPEC 3RD MATERIAL RESPONSE OR MIL-S-5059 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6721 MIL SPEC 5TH MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: BLANK RECTANGULAR; Peripheral Shape Style: ROUND. 6 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.