The Washer,flat, cataloged under National Stock Number 5310-01-398-0323, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Moeller Manufacturing & Supply, Llc. Government technical data includes 9 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-398-0323 |
| Primary Part Number | NAS1149D0416H |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Moeller Manufacturing & Supply, Llc |
| Status | ACTIVE |
| Overall Diameter | 0.495 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-A-250/5 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Specification/standard Data | 80205-NAS1149 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Peripheral Shape Style | ROUND |
| Material | ALUMINUM ALLOY 2024 AND ALUMINUM ALLOY 1230 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.255 INCHES MINIMUM AND 0.275 INCHES MAXIMUM IN |
| Thickness | 0.013 INCHES MINIMUM AND 0.019 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 |
|---|---|
| NAS1149D0416H | Moeller Manufacturing & Supply, Llc (USA) |
| NAS1149D0416H | Boeing Distribution Services X, Inc. (USA) |
| NAS1149D0416H | Spec Tech Usa Inc (USA) |
| Reference | Meaning |
|---|---|
| NAS1149D0416H | 5/9 Secondary reference Refa International Inc. |
| 10122290 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| NAS1149D0416H | 3/2 Design control — primary reference U.S. Government activity |
| 5310PL0787237 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5310-01-398-0323 is a Washer,flat, manufactured by Moeller Manufacturing & Supply, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-398-0323 has 3 manufacturer part numbers on file: NAS1149D0416H (Moeller Manufacturing & Supply, Llc), NAS1149D0416H (Boeing Distribution Services X, Inc.), NAS1149D0416H (Spec Tech Usa Inc).
Key specifications for NAS1149D0416H: Overall Diameter: 0.495 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN; Material Document and Classification: QQ-A-250/5 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Specification/standard Data: 80205-NAS1149 PROFESSIONAL/INDUSTRIAL ASSOCIATION 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.