PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

39251Head,linear Actuating Cylinder

Electric Boat Corporation Div General Dynamics Electric Boat · NSN 3040-01-478-3384 · FSC 3040 · No Item Name Available
Verified by PartsTable
NSN 3040-01-478-3384 — this item is cataloged by the U.S. Government under National Stock Number 3040-01-478-3384. Primary manufacturer part number: 39251.
Features
  • Head,linear Actuating Cylinder — FSC 3040
  • Model for Which Designed: 41042
  • Material: COPPER ALLOY
  • 6 verified cross-references
  • Primary manufacturer: Electric Boat Corporation Div General Dynamics Electric Boat
Applications
  • Applications requiring Copper Alloy construction
General Description

The Head,linear Actuating Cylinder, cataloged under National Stock Number 3040-01-478-3384, is classified within Federal Supply Class 3040 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Electric Boat Corporation Div General Dynamics Electric Boat. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3040-01-478-3384
Primary Part Number39251
Item NameHead,linear Actuating Cylinder
FSC / FSG3040 / 30 — No Item Name Available
ManufacturerElectric Boat Corporation Div General Dynamics Electric Boat
StatusACTIVE
Model for Which Designed41042
MaterialCOPPER ALLOY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5998-00-018-9896 INTERCHANGEABLE
Circuit Card Assembly
6625-01-230-68533925-1 INTERCHANGEABLE
Probe,test
Fluke Electronics Corp
5930-01-302-6452 INTERCHANGEABLE
Switch,push
5930-01-326-9849520045-005 INTERCHANGEABLE
Switch,push
Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp
4710-01-346-45863925-1 INTERCHANGEABLE
Tube Assembly,metal
B/e Aerospace, Inc.
5915-01-381-4164392-51 INTERCHANGEABLE
Filter,band Pass
Harold Johnson Optical Laboratories, Inc. Dba Johnson Harold Optical Labs
5305-01-470-709239251 INTERCHANGEABLE
Screw,cap,hexagon Head
Tld Wollard Llc
4320-01-477-937439253 INTERCHANGEABLE
Cylinder Sleeve
Moog Inc. Dba Ampac-Isp Corp
4320-01-477-937639254 INTERCHANGEABLE
Cylinder Sleeve
Moog Inc. Dba Ampac-Isp Corp
3040-01-478-337839249 INTERCHANGEABLE
Head,linear Actuating Cylinder
Electric Boat Corporation Div General Dynamics Electric Boat
Cross-Reference Index
Part NumberManufacturer
39251 Moog Inc. Dba Ampac-Isp Corp (USA)
41042-39245 ITEM 6 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
41042-39245 ITEM 6 Moog Inc. Dba Ampac-Isp Corp (USA)
41042-39245 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
39251 PRIMARY Electric Boat Corporation Div General Dynamics Electric Boat (USA)
41042-39245 Moog Inc. Dba Ampac-Isp Corp (USA)
Related Parts
5998-00-018-9896INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
6625-01-230-6853INTERCHANGEABLE
PROBE,TEST
3925-1
5930-01-302-6452INTERCHANGEABLE
SWITCH,PUSH
5930-01-326-9849INTERCHANGEABLE
SWITCH,PUSH
520045-005
4710-01-346-4586INTERCHANGEABLE
TUBE ASSEMBLY,METAL
3925-1
5915-01-381-4164INTERCHANGEABLE
FILTER,BAND PASS
392-51
5305-01-470-7092INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
39251
4320-01-477-9374INTERCHANGEABLE
CYLINDER SLEEVE
39253
4320-01-477-9376INTERCHANGEABLE
CYLINDER SLEEVE
39254
3040-01-478-3378INTERCHANGEABLE
HEAD,LINEAR ACTUATING CYLINDER
39249
3040-01-478-3382INTERCHANGEABLE
HEAD,LINEAR ACTUATING CYLINDER
39250
3040-01-478-3385INTERCHANGEABLE
CAP,LINEAR ACTUATING CYLINDER
39252

Frequently Asked Questions

What is NSN 3040-01-478-3384?

NSN 3040-01-478-3384 is a Head,linear Actuating Cylinder, manufactured by Electric Boat Corporation Div General Dynamics Electric Boat, classified under FSC 3040 (No Item Name Available). Status: active.

What are the part numbers for NSN 3040-01-478-3384?

NSN 3040-01-478-3384 has 6 cross-referenced part numbers: 39251 (Moog Inc. Dba Ampac-Isp Corp), 41042-39245 ITEM 6 (Electric Boat Corporation Div General Dynamics Electric Boat), 41042-39245 ITEM 6 (Moog Inc. Dba Ampac-Isp Corp), 41042-39245 (Electric Boat Corporation Div General Dynamics Electric Boat), 39251 (Electric Boat Corporation Div General Dynamics Electric Boat) and 1 more.

What NSN replaces 3040-01-478-3384?

There are 12 known substitutes for 3040-01-478-3384: 5998-00-018-9896, 6625-01-230-6853, 5930-01-302-6452 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 39251?

Key specifications for 39251: Part Name Assigned by Controlling Agency: C-3 PORT HEAD; Model for Which Designed: 41042; End Item Identification: ROTARY HYDRAULIC ACTUATOR; SEAWOLF; Special Features: MATERIAL PER ASTM B150 ALLOY C63200; PORT END 1.750-12UN-3A; INSIDE PORT DIA .521; HEAD CONNECTED BY 4 SOCKET HEAD CAP SCREWS WITH THREADED INSERTS A. 5 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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