Shaft, Shouldered3040-01-378-8044

NSN 3040-01-378-8044 · NIIN 013788044 · Part number 8909-397-001

The Entwistle Company Llc · FSC 3040 — Miscellaneous Power Transmission Equipment · FSG 30 — Mechanical Power Transmission Equipment · CAGE 20722

Government record, cited

NSN 3040-01-378-8044 — this item is cataloged by the U.S. Government under National Stock Number 3040-01-378-8044. Manufacturer of record part number: 8909-397-001.

Also searched as 3040-01-378-8044 · 3040013788044 · NIIN 013788044 · 01-378-8044 · FSC 3040 Miscellaneous Power Transmission Equipment · CAGE 20722 · 8909-397-001

Nearby stock numbers ← 3040-01-378-7703 Parts Kit, Linear Actuating Cylin · 3040-01-378-8282 Shaft, Shouldered →

Features

Shaft,shouldered — FSC 3040
Surface Finish: 64.0 MICROINCHES
Step Quantity: 2
First End Diameter: 1.8500 INCHES NOMINAL IN
Second End Diameter: 1.3785 INCHES MAXIMUM IN
Largest Step Diameter: 1.8500 INCHES NOMINAL IN
First End Style: PLAIN
Second End Groove Diameter: 1.3120 INCHES NOMINAL IN

Identification

NSN: 3040-01-378-8044
NIIN: 013788044
FSC: 3040 — Miscellaneous Power Transmission Equipment
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 8909-397-001
Manufacturer: The Entwistle Company Llc

General Description

The Shaft,shouldered, cataloged under National Stock Number 3040-01-378-8044, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is The Entwistle Company Llc. Government technical data includes 12 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.

Technical Specifications

Parameter	Value
NSN	3040-01-378-8044
Primary Part Number	8909-397-001
Item Name	Shaft,shouldered
FSC / FSG	3040 / 30 — Miscellaneous Power Transmission Equipment
Manufacturer	The Entwistle Company Llc
Status	ACTIVE
Surface Finish	64.0 MICROINCHES
Step Quantity	2
First End Diameter	1.8500 INCHES NOMINAL IN
Second End Diameter	1.3785 INCHES MAXIMUM IN
Largest Step Diameter	1.8500 INCHES NOMINAL IN
First End Style	PLAIN
Second End Groove Diameter	1.3120 INCHES NOMINAL IN
End Similarity	NOT IDENTICAL
Second End Groove Width	0.6300 INCHES NOMINAL IN
Second End Distance From End to Groove	1.1160 INCHES NOMINAL IN
Second End Style	CIRCULAR GROOVED
Material	STEEL COMP 4140

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
8909-397-001 PRIMARY	The Entwistle Company Llc (USA)

No interchangeability data on file.

Other items in FSC 3040 — Miscellaneous Power Transmission Equipment

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

3040-00-001-0046

3040-00-001-0046 · Item name not on file

3040-00-001-0047

3040-00-001-0047 · Item name not on file

3040-00-001-0048

3040-00-001-0048 · Item name not on file

3040-00-001-0068

3040-00-001-0068 · Item name not on file

3040-00-001-0077

3040-00-001-0077 · Item name not on file

3040-00-001-0078

3040-00-001-0078 · Item name not on file

3040-00-001-0089

3040-00-001-0089 · Item name not on file

3040-00-001-1224

3040-00-001-1224 · Item name not on file

Frequently Asked Questions

What is NSN 3040-01-378-8044?

NSN 3040-01-378-8044 is a Shaft,shouldered, manufactured by The Entwistle Company Llc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.

What part numbers are listed for NSN 3040-01-378-8044?

NSN 3040-01-378-8044 has 1 manufacturer part number on file: 8909-397-001 (The Entwistle Company Llc).

What are the specifications of 8909-397-001?

Key specifications for 8909-397-001: Surface Finish: 64.0 MICROINCHES; Step Quantity: 2; First End Diameter: 1.8500 INCHES NOMINAL IN; Second End Diameter: 1.3785 INCHES MAXIMUM IN. 12 specifications are documented in the U.S. Government catalog.

Is NSN 3040-01-378-8044 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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