The Washer,flat, cataloged under National Stock Number 5310-01-181-4115, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Leonardo S.p.a. Div Electronics. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-181-4115 |
| Primary Part Number | T0071182 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Leonardo S.p.a. Div Electronics |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-P-47090 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.375 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-6721,300 SERIES MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.255 INCHES MINIMUM AND 0.275 INCHES MAXIMUM IN |
| Thickness | 0.032 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 |
|---|---|
| T0071182 | Leonardo S.p.a. Div Electronics (ITA) |
| T0071182 | Leonardo Spa Helicopters Division - Production Site (ITA) |
| Reference | Meaning |
|---|---|
| 3322757-5 | 5/9 Secondary reference Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div |
| 3322757-5 | 3/9 Design control — primary reference Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| 3322757-5 | 5/9 Secondary reference L3 Technologies, Inc. Div Ocean Systems |
NSN 5310-01-181-4115 is a Washer,flat, manufactured by Leonardo S.p.a. Div Electronics, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-181-4115 has 2 manufacturer part numbers on file: T0071182 (Leonardo S.p.a. Div Electronics), T0071182 (Leonardo Spa Helicopters Division - Production Site).
Key specifications for T0071182: Surface Treatment Document and Classification: MIL-P-47090 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.375 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-6721,300 SERIES 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.