PartsTable TECHNICAL DATA SHEET

NSN 3040-01-204-8025Government record, cited

Cylinder, Upper3040-01-204-8025

NSN 3040-01-204-8025 · NIIN 012048025

FSC 3040 — Miscellaneous Power Transmission Equipment · FSG 30 — Mechanical Power Transmission Equipment

Government record, cited

Also searched as 3040-01-204-8025 · 3040012048025 · NIIN 012048025 · 01-204-8025 · FSC 3040 Miscellaneous Power Transmission Equipment · SSN637-522-2143970 · SSN637-522-2143970 PIECE 3 · 77682-37X6 · 77682-37X6 PIECE 3

Nearby stock numbers ← 3040-01-204-8024 Cylinder, Lower · 3040-01-204-8028 Shaft →

Features

Cylinder,upper — FSC 3040
General Characteristics Item Description: NI-CU,MIL-T-1368,TYPE 1,COND 2;3.500 IN. DIA;0.063 IN. RADIUS;0.094 IN. RELIEF TO ROOT DIA OF THD IN

Identification

NSN: 3040-01-204-8025
NIIN: 012048025
FSC: 3040 — Miscellaneous Power Transmission Equipment
FSG: 30 — Mechanical Power Transmission Equipment

General Description

The Cylinder,upper, cataloged under National Stock Number 3040-01-204-8025, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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	3040-01-204-8025
Item Name	Cylinder,upper
FSC / FSG	3040 / 30 — Miscellaneous Power Transmission Equipment
Status	ACTIVE
General Characteristics Item Description	NI-CU,MIL-T-1368,TYPE 1,COND 2;3.500 IN. DIA;0.063 IN. RADIUS;0.094 IN. RELIEF TO ROOT DIA OF THD 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

⇄ Related Items 4

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

3040-01-204-807577682-37X6 PIECE 7 POSSIBLE MATCH

PISTON,LINEAR ACTUATING CYLINDER

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

3040-01-204-961777682-37X6 PIECE 14 POSSIBLE MATCH

FLANGE,CYLINDER ACTUATING

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

5315-01-205-8721522-2143970 PIECE 21 POSSIBLE MATCH

PIN,STRAIGHT,HEADLESS

Possible match (shared part number)Naval Ship Systems Command

3040-01-205-877177682-37X6 PIECE 8 POSSIBLE MATCH

ROD,PISTON,LINEAR ACTUATING CYLI

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
SSN637-522-2143970	D/9 Drawing number reference only U.S. Government activity
SSN637-522-2143970 PIECE 3	5/2 Secondary reference U.S. Government activity
77682-37X6	D/9 Drawing number reference only U.S. Government activity
77682-37X6 PIECE 3	3/2 Design control — primary reference U.S. Government activity

Related Parts

3040-01-204-8075POSSIBLE MATCH

PISTON,LINEAR ACTUATING CYLINDER

77682-37X6 PIECE 7

3040-01-204-9617POSSIBLE MATCH

FLANGE,CYLINDER ACTUATING

77682-37X6 PIECE 14

5315-01-205-8721POSSIBLE MATCH

PIN,STRAIGHT,HEADLESS

522-2143970 PIECE 21

3040-01-205-8771POSSIBLE MATCH

ROD,PISTON,LINEAR ACTUATING CYLI

77682-37X6 PIECE 8

Frequently Asked Questions

What is NSN 3040-01-204-8025?

NSN 3040-01-204-8025 is a Cylinder,upper, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.

What NSN replaces 3040-01-204-8025?

4 possible matches (shared part number, not a government interchangeability claim): 3040-01-204-8075, 3040-01-204-9617, 5315-01-205-8721. Verify interchangeability with system specifications before substitution.

What are the specifications of 3040-01-204-8025?

Key specifications for 3040-01-204-8025: General Characteristics Item Description: NI-CU,MIL-T-1368,TYPE 1,COND 2;3.500 IN. DIA;0.063 IN. RADIUS;0.094 IN. RELIEF TO ROOT DIA OF THD IN. 1 specification is documented in the U.S. Government catalog.

Is NSN 3040-01-204-8025 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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