PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21403Head,linear Actuating Cylinder

Moog Inc. Dba Ampac-Isp Corp · NSN 3040-01-198-7479 · FSC 3040 · No Item Name Available
Verified by PartsTable
NSN 3040-01-198-7479 — this item is cataloged by the U.S. Government under National Stock Number 3040-01-198-7479. Primary manufacturer part number: 21403.
Features
  • Head,linear Actuating Cylinder — FSC 3040
  • Material: STEEL
  • 3 verified cross-references
  • Primary manufacturer: Moog Inc. Dba Ampac-Isp Corp
Applications
  • Applications requiring Steel construction
General Description

The Head,linear Actuating Cylinder, cataloged under National Stock Number 3040-01-198-7479, is classified within Federal Supply Class 3040 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Moog Inc. Dba Ampac-Isp Corp. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3040-01-198-7479
Primary Part Number21403
Item NameHead,linear Actuating Cylinder
FSC / FSG3040 / 30 — No Item Name Available
ManufacturerMoog Inc. Dba Ampac-Isp Corp
StatusACTIVE
MaterialSTEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5306-00-274-1917142419 INTERCHANGEABLE
Bolt,machine
Johnson Controls Navy Systems, Llc
5330-00-526-815721403 INTERCHANGEABLE
Gasket
Liftec Inc Div Liftec, Inc.
3020-01-199-192521406 INTERCHANGEABLE
Gear,spur
Moog Inc. Dba Ampac-Isp Corp
3020-01-199-313521402 INTERCHANGEABLE
Gear Rack
Moog Inc. Dba Ampac-Isp Corp
3020-01-199-465821401 INTERCHANGEABLE
Port Head Actuator
Moog Inc. Dba Ampac-Isp Corp
4820-01-200-061021403 INTERCHANGEABLE
Seat,valve
Barksdale, Inc
3010-01-201-1280250C INTERCHANGEABLE
Actuator Subassembly
Moog Inc. Dba Ampac-Isp Corp
6240-01-313-6860F15T8-18/SPECTRUMLITE-PL/HD17M INTERCHANGEABLE
Lamp,fluorescent
Westron Corporation Dba Westron Lighting
4720-01-358-213021403 INTERCHANGEABLE
Hose,preformed
Gates Corporation
2805-01-538-286121403 INTERCHANGEABLE
Trim Tab,gearcase
Willard Marine, Inc.
Cross-Reference Index
Part NumberManufacturer
250-21215 ITEM 8 Moog Inc. Dba Ampac-Isp Corp (USA)
21403 PRIMARY Moog Inc. Dba Ampac-Isp Corp (USA)
250-21215 Moog Inc. Dba Ampac-Isp Corp (USA)
Related Parts
5306-00-274-1917INTERCHANGEABLE
BOLT,MACHINE
142419
5330-00-526-8157INTERCHANGEABLE
GASKET
21403
3020-01-199-1925INTERCHANGEABLE
GEAR,SPUR
21406
3020-01-199-3135INTERCHANGEABLE
GEAR RACK
21402
3020-01-199-4658INTERCHANGEABLE
PORT HEAD ACTUATOR
21401
4820-01-200-0610INTERCHANGEABLE
SEAT,VALVE
21403
3010-01-201-1280INTERCHANGEABLE
ACTUATOR SUBASSEMBLY
250C
6240-01-313-6860INTERCHANGEABLE
LAMP,FLUORESCENT
F15T8-18/SPECTRUMLITE-PL/HD17M
4720-01-358-2130INTERCHANGEABLE
HOSE,PREFORMED
21403
2805-01-538-2861INTERCHANGEABLE
TRIM TAB,GEARCASE
21403

Frequently Asked Questions

What is NSN 3040-01-198-7479?

NSN 3040-01-198-7479 is a Head,linear Actuating Cylinder, manufactured by Moog Inc. Dba Ampac-Isp Corp, classified under FSC 3040 (No Item Name Available). Status: active.

What are the part numbers for NSN 3040-01-198-7479?

NSN 3040-01-198-7479 has 3 cross-referenced part numbers: 250-21215 ITEM 8 (Moog Inc. Dba Ampac-Isp Corp), 21403 (Moog Inc. Dba Ampac-Isp Corp), 250-21215 (Moog Inc. Dba Ampac-Isp Corp).

What NSN replaces 3040-01-198-7479?

There are 10 known substitutes for 3040-01-198-7479: 5306-00-274-1917, 5330-00-526-8157, 3020-01-199-1925 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21403?

Key specifications for 21403: End Item Identification: FLO-TORK INC,ROTARY ACTUATOR MODEL 250C; Material: STEEL. 2 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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