PartsTable TECHNICAL DATA SHEET

NSN 3040-01-144-3757Government record, cited

Shaft, Shouldered3040-01-144-3757

NSN 3040-01-144-3757 · NIIN 011443757 · Part number 9778FD

Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S · FSC 3040 — Miscellaneous Power Transmission Equipment · FSG 30 — Mechanical Power Transmission Equipment · CAGE 73760

Government record, cited

NSN 3040-01-144-3757 — this item is cataloged by the U.S. Government under National Stock Number 3040-01-144-3757. Manufacturer of record part number: 9778FD.

Also searched as 3040-01-144-3757 · 3040011443757 · NIIN 011443757 · 01-144-3757 · FSC 3040 Miscellaneous Power Transmission Equipment · CAGE 73760 · 9778FD · 9778EV

Nearby stock numbers ← 3040-01-144-3685 Housing, Mechanical Drive · 3040-01-144-3758 Shaft, Shouldered →

Features

Shaft,shouldered — FSC 3040
First End Diameter: 0.5000 INCHES NOMINAL IN
First End Spline Major Diameter: 0.5000 INCHES NOMINAL IN
Second End Diameter: 0.5000 INCHES NOMINAL IN
Largest Step Diameter: 0.615 INCHES NOMINAL IN
First End Style: SPLINED (STRAIGHT)
Second End Spline Major Diameter: 0.5000 INCHES NOMINAL IN
First End Spline Quantity: 15

Identification

NSN: 3040-01-144-3757
NIIN: 011443757
FSC: 3040 — Miscellaneous Power Transmission Equipment
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 9778FD
Manufacturer: Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S

General Description

The Shaft,shouldered, cataloged under National Stock Number 3040-01-144-3757, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	3040-01-144-3757
Primary Part Number	9778FD
Item Name	Shaft,shouldered
FSC / FSG	3040 / 30 — Miscellaneous Power Transmission Equipment
Manufacturer	Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S
Status	ACTIVE
First End Diameter	0.5000 INCHES NOMINAL IN
First End Spline Major Diameter	0.5000 INCHES NOMINAL IN
Second End Diameter	0.5000 INCHES NOMINAL IN
Largest Step Diameter	0.615 INCHES NOMINAL IN
First End Style	SPLINED (STRAIGHT)
Second End Spline Major Diameter	0.5000 INCHES NOMINAL IN
First End Spline Quantity	15
End Similarity	NOT IDENTICAL
Second End Spline Quantity	15
Second End Style	SPLINED (STRAIGHT)
Material	ALUMINUM

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
9778FD PRIMARY	Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S (USA)

Reference documents

Reference	Meaning
9778EV	5/9 Secondary reference Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S

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 3040-01-144-3757?

NSN 3040-01-144-3757 is a Shaft,shouldered, manufactured by Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.

What part numbers are listed for NSN 3040-01-144-3757?

NSN 3040-01-144-3757 has 1 manufacturer part number on file: 9778FD (Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S).

What are the specifications of 9778FD?

Key specifications for 9778FD: First End Diameter: 0.5000 INCHES NOMINAL IN; First End Spline Major Diameter: 0.5000 INCHES NOMINAL IN; Second End Diameter: 0.5000 INCHES NOMINAL IN; Largest Step Diameter: 0.615 INCHES NOMINAL IN. 11 specifications are documented in the U.S. Government catalog.

Is NSN 3040-01-144-3757 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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