Shaft, Shouldered3040-01-273-9186

NSN 3040-01-273-9186 · NIIN 012739186 · Part number 40374

Lake Shore Systems, Inc. · FSC 3040 — Miscellaneous Power Transmission Equipment · FSG 30 — Mechanical Power Transmission Equipment · CAGE 34712

Government record, cited

NSN 3040-01-273-9186 — this item is cataloged by the U.S. Government under National Stock Number 3040-01-273-9186. Manufacturer of record part number: 40374.

Also searched as 3040-01-273-9186 · 3040012739186 · NIIN 012739186 · 01-273-9186 · FSC 3040 Miscellaneous Power Transmission Equipment · CAGE 34712 · 40374 · 3728-1 PIECE 14

Nearby stock numbers ← 3040-01-273-9185 Shaft, Shouldered · 3040-01-273-9187 Shaft, Shouldered →

Features

Shaft,shouldered — FSC 3040
Step Quantity: 6
First End Diameter: 2.2500 INCHES NOMINAL IN
Second End Diameter: 2.3750 INCHES NOMINAL IN
First End Style: PLAIN
Second End Spline Major Diameter: 2.3750 INCHES NOMINAL IN
End Similarity: NOT IDENTICAL
Second End Spline Quantity: 18

Identification

NSN: 3040-01-273-9186
NIIN: 012739186
FSC: 3040 — Miscellaneous Power Transmission Equipment
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 40374
Manufacturer: Lake Shore Systems, Inc.

General Description

The Shaft,shouldered, cataloged under National Stock Number 3040-01-273-9186, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Lake Shore Systems, Inc.. 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. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	3040-01-273-9186
Primary Part Number	40374
Item Name	Shaft,shouldered
FSC / FSG	3040 / 30 — Miscellaneous Power Transmission Equipment
Manufacturer	Lake Shore Systems, Inc.
Status	ACTIVE
Step Quantity	6
First End Diameter	2.2500 INCHES NOMINAL IN
Second End Diameter	2.3750 INCHES NOMINAL IN
First End Style	PLAIN
Second End Spline Major Diameter	2.3750 INCHES NOMINAL IN
End Similarity	NOT IDENTICAL
Second End Spline Quantity	18
Second End Style	SPLINED (STRAIGHT)
Material	STEEL COMP 1045
Second End Spline Length	3.870 INCHES NOMINAL IN

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

Cross-Reference Index

Part Number	Manufacturer
3728-1 PIECE 14	Lake Shore Systems, Inc. (USA)
40374 PRIMARY	Lake Shore Systems, Inc. (USA)

Frequently Asked Questions

What is NSN 3040-01-273-9186?

NSN 3040-01-273-9186 is a Shaft,shouldered, manufactured by Lake Shore Systems, Inc., classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.

What part numbers are listed for NSN 3040-01-273-9186?

NSN 3040-01-273-9186 has 2 manufacturer part numbers on file: 3728-1 PIECE 14 (Lake Shore Systems, Inc.), 40374 (Lake Shore Systems, Inc.).

What are the specifications of 40374?

Key specifications for 40374: Step Quantity: 6; First End Diameter: 2.2500 INCHES NOMINAL IN; Second End Diameter: 2.3750 INCHES NOMINAL IN; First End Style: PLAIN. 10 specifications are documented in the U.S. Government catalog.

Is NSN 3040-01-273-9186 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.

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