The Gearshaft,helical, cataloged under National Stock Number 3040-01-251-9957, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is M Rosenblatt & Son Inc. Government technical data includes 11 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 | 3040-01-251-9957 |
| Primary Part Number | 5210182 |
| Item Name | Gearshaft,helical |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | M Rosenblatt & Son Inc |
| Status | ACTIVE |
| Shaft Type | SHOULDERED |
| Shaft Material | STEEL |
| Helix Angle | 15.2228 DEGREES |
| Shaft End Size | 2.251 INCHES AND 2.500 INCHES IN |
| Teeth Quantity | 23 |
| Tooth Direction | RIGHT |
| Diametral Pitch | 6 |
| Gear Outside Diameter | 4.3035 INCHES NOMINAL IN |
| Gear Material | STEEL |
| Pressure Angle | 25.0000 DEGREES |
| Face Width | 4.400 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 |
NSN 3040-01-251-9957 is a Gearshaft,helical, manufactured by M Rosenblatt & Son Inc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-251-9957 has 2 manufacturer part numbers on file: 5210182 (M Rosenblatt & Son Inc), 5210182 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-566-5442. Verify interchangeability with system specifications before substitution.
Key specifications for 5210182: Shaft Type: SHOULDERED; Shaft Material: STEEL; Helix Angle: 15.2228 DEGREES; Shaft End Size: 2.251 INCHES AND 2.500 INCHES IN. 11 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.