The Adapter,spline, cataloged under National Stock Number 3040-01-421-5235, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Morpac Industries, Inc Div Actuator. Government technical data includes 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-421-5235 |
| Primary Part Number | 40018-1 |
| Item Name | Adapter,spline |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Morpac Industries, Inc Div Actuator |
| Status | ACTIVE |
| Spline Minor Diameter | 1.610 INCHES NOMINAL IN |
| Teeth Quantity | 40 |
| Spline Major Diameter | 1.708 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 10004PC3 | Morpac Industries, Inc Div Actuator (USA) |
| 10003PC3 | Morpac Industries, Inc Div Actuator (USA) |
| 40018-1 PRIMARY | Morpac Industries, Inc Div Actuator (USA) |
| Reference | Meaning |
|---|---|
| 10003 | D/9 Drawing number reference only Morpac Industries, Inc Div Actuator |
| 40018 | D/9 Drawing number reference only Morpac Industries, Inc Div Actuator |
| 10004 | D/9 Drawing number reference only Morpac Industries, Inc Div Actuator |
NSN 3040-01-421-5235 is a Adapter,spline, manufactured by Morpac Industries, Inc Div Actuator, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-421-5235 has 3 manufacturer part numbers on file: 10004PC3 (Morpac Industries, Inc Div Actuator), 10003PC3 (Morpac Industries, Inc Div Actuator), 40018-1 (Morpac Industries, Inc Div Actuator).
1 possible match (shared part number, not a government interchangeability claim): 7025-01-511-0111. Verify interchangeability with system specifications before substitution.
Key specifications for 40018-1: Spline Minor Diameter: 1.610 INCHES NOMINAL IN; Teeth Quantity: 40; Overall Length: 2.000 INCHES NOMINAL IN; Spline Major Diameter: 1.708 INCHES NOMINAL IN. 4 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.