The Adapter,spline, cataloged under National Stock Number 3040-01-381-1428, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Avtron Aerospace Inc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-381-1428 |
| Primary Part Number | C19172 |
| Item Name | Adapter,spline |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Avtron Aerospace Inc |
| Status | ACTIVE |
| Spline Minor Diameter | 1.480 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN |
| Spline Type | EXTERNAL |
| Teeth Quantity | 26 |
| Hardness Rating | 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM |
| Spline Length | 1.000 INCHES NOMINAL IN |
| Material Document and Classification | AISI 8620 ASSN STD SINGLE MATERIAL RESPONSE |
| Spline Major Diameter | 1.683 INCHES MINIMUM AND 1.688 INCHES MAXIMUM IN |
| Material | STEEL |
| 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 |
|---|---|
| C19172 PRIMARY | Avtron Aerospace Inc (USA) |
NSN 3040-01-381-1428 is a Adapter,spline, manufactured by Avtron Aerospace Inc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-381-1428 has 1 manufacturer part number on file: C19172 (Avtron Aerospace Inc).
Key specifications for C19172: Spline Minor Diameter: 1.480 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN; Spline Type: EXTERNAL; Teeth Quantity: 26; Hardness Rating: 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM. 8 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.