First End Spline Major Diameter: 1.3725 INCHES NOMINAL IN
First End Style: SPLINED (STRAIGHT)
Material Document and Classification: QQ-S-763 CL 304,COND A FED SPEC SINGLE MATERIAL RESPONSE
First End Spline Length: 1.188 INCHES NOMINAL IN
First End Spline Quantity: 10
Identification
NSN: 3040-01-237-6250
NIIN: 012376250
FSC: 3040 — Miscellaneous Power Transmission Equipment
FSG: 30 — Mechanical Power Transmission Equipment
General Description
The Shaft,straight, cataloged under National Stock Number 3040-01-237-6250, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 12 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
3040-01-237-6250
Item Name
Shaft,straight
FSC / FSG
3040 / 30 — Miscellaneous Power Transmission Equipment
Status
ACTIVE
Surface Finish
63.0 MICROINCHES
First End Diameter
1.3725 INCHES NOMINAL IN
First End Spline Major Diameter
1.3725 INCHES NOMINAL IN
First End Style
SPLINED (STRAIGHT)
Material Document and Classification
QQ-S-763 CL 304,COND A FED SPEC SINGLE MATERIAL RESPONSE
First End Spline Length
1.188 INCHES NOMINAL IN
First End Spline Quantity
10
End Similarity
IDENTICAL
First End Spline Minor Diameter
1.1745 INCHES NOMINAL IN
Material
STEEL CORROSION RESISTING
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items12
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
NSN 3040-01-237-6250 is a Shaft,straight, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
What NSN replaces 3040-01-237-6250?
12 possible matches (shared part number, not a government interchangeability claim): 3040-01-237-6251, 3040-01-237-6252, 3040-01-237-6253. Verify interchangeability with system specifications before substitution.
What are the specifications of 3040-01-237-6250?
Key specifications for 3040-01-237-6250: Surface Finish: 63.0 MICROINCHES; First End Diameter: 1.3725 INCHES NOMINAL IN; First End Spline Major Diameter: 1.3725 INCHES NOMINAL IN; First End Style: SPLINED (STRAIGHT). 10 specifications are documented in the U.S. Government catalog.
Is NSN 3040-01-237-6250 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.