PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

74991Actuator-Timer---Ap

Hamilton Sundstrand Corporation Dba Collins Aerospace · NSN 6645-00-483-7044 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-483-7044 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-483-7044. Primary manufacturer part number: 74991.
Features
  • Actuator-Timer---Ap — FSC 6645
  • 1 verified cross-reference
  • Primary manufacturer: Hamilton Sundstrand Corporation Dba Collins Aerospace
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Actuator-Timer---Ap, cataloged under National Stock Number 6645-00-483-7044, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameActuator-Timer---Ap
FSC / FSG6645 — No Item Name Available (FSG 66)
ManufacturersHamilton Sundstrand Corporation Dba Collins Aerospace (CAGE 73030)
Technical Specifications
ParameterValue
NSN6645-00-483-7044
Primary Part Number74991
Item NameActuator-Timer---Ap
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerHamilton Sundstrand Corporation Dba Collins Aerospace
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5905-00-158-550515704 INTERCHANGEABLE
Resistor,variable,wire Wound,non
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
5970-00-391-975574991 INTERCHANGEABLE
Insulator,plate
Telemechanics Inc
5330-00-641-789674991 INTERCHANGEABLE
Gasket
Honeywell International Inc. Div Aerospace - Torrance
5365-00-701-730574991 INTERCHANGEABLE
Shim
Triumph Engine Control Systems Llc
4820-01-197-985774991B INTERCHANGEABLE
Valve,regulating,fluid Pressure
Griswold Industries Dba Cla-Val Co
Cross-Reference Index
Part NumberManufacturer
74991 PRIMARY Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)
Related Parts
5905-00-158-5505INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
15704
5970-00-391-9755INTERCHANGEABLE
INSULATOR,PLATE
74991
5330-00-641-7896INTERCHANGEABLE
GASKET
74991
5365-00-701-7305INTERCHANGEABLE
SHIM
74991
4820-01-197-9857INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
74991B

Frequently Asked Questions

What is NSN 6645-00-483-7044?

NSN 6645-00-483-7044 is a Actuator-Timer---Ap, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 6645 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6645-00-483-7044?

NSN 6645-00-483-7044 has 1 cross-referenced part number: 74991 (Hamilton Sundstrand Corporation Dba Collins Aerospace).

What NSN replaces 6645-00-483-7044?

There are 5 known substitutes for 6645-00-483-7044: 5905-00-158-5505, 5970-00-391-9755, 5330-00-641-7896 and 2 more. Verify interchangeability with system specifications before substitution.

Is NSN 6645-00-483-7044 still in active supply?

NSN 6645-00-483-7044 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com