The Washer,flat, cataloged under National Stock Number 5310-01-386-1519, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Leonardo Spa Helicopters Division - Production Site. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-386-1519 |
| Primary Part Number | NAS1149D0416J |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Leonardo Spa Helicopters Division - Production Site |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-C-5541 CL 3 NATIONAL STD SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.500 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-250/5 NATIONAL STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Specification/standard Data | 80205-NAS1149 NATIONAL STD/SPEC |
| Peripheral Shape Style | ROUND |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.265 INCHES NOMINAL IN |
| Thickness | 0.016 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 |
|---|---|
| NAS1149D0416J | Leonardo Spa Helicopters Division - Production Site (ITA) |
| NAS1149D0416J | Tecno Trade S.r.l. (ITA) |
| NAS1149D0416J | Leonardo Uk Ltd (GBR) |
| Reference | Meaning |
|---|---|
| NAS1149D0416J | 3/2 Design control — primary reference U.S. Government activity |
| 5310PL0647362 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 10122278 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5310-01-386-1519 is a Washer,flat, manufactured by Leonardo Spa Helicopters Division - Production Site, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-386-1519 has 3 manufacturer part numbers on file: NAS1149D0416J (Leonardo Spa Helicopters Division - Production Site), NAS1149D0416J (Tecno Trade S.r.l.), NAS1149D0416J (Leonardo Uk Ltd).
Key specifications for NAS1149D0416J: Surface Treatment Document and Classification: MIL-C-5541 CL 3 NATIONAL STD SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.500 INCHES NOMINAL IN; Material Document and Classification: QQ-A-250/5 NATIONAL STD 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.