The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-149-9855, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Hartzell Propeller Llc. 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. 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 | 5310-01-149-9855 |
| Primary Part Number | A-3439 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Hartzell Propeller Llc |
| Status | ACTIVE |
| Width Across Flats | 0.600 INCHES NOMINAL IN |
| Thread Series | UNF |
| Supplementary Features | MADE FROM AN316-6R NSN 5310-00-167-1300 |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Nut Height | 0.140 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| Bearing Surface Type | FLAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5310-01-149-9855 is a Nut,plain,hexagon, manufactured by Hartzell Propeller Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-149-9855 has 2 manufacturer part numbers on file: A-3439 (Hartzell Propeller Llc), A3439 (Technic Aviation).
1 possible match (shared part number, not a government interchangeability claim): 5355-01-272-4647. Verify interchangeability with system specifications before substitution.
Key specifications for A-3439: Width Across Flats: 0.600 INCHES NOMINAL IN; Thread Series: UNF; Supplementary Features: MADE FROM AN316-6R NSN 5310-00-167-1300; Thread Direction: RIGHT-HAND. 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.