PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7479Wheel,hour Gear

The Chelsea Clock Llc · NSN 6645-00-163-0727 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-163-0727 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-163-0727. Primary manufacturer part number: 7479.
Features
  • Wheel,hour Gear — FSC 6645
  • General Characteristics Item Description: BRASS; 1.250 IN. DIA IN
  • 2 verified cross-references
  • Primary manufacturer: The Chelsea Clock Llc
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
General Description

The Wheel,hour Gear, cataloged under National Stock Number 6645-00-163-0727, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is The Chelsea Clock Llc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6645-00-163-0727
Primary Part Number7479
Item NameWheel,hour Gear
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerThe Chelsea Clock Llc
StatusACTIVE
General Characteristics Item DescriptionBRASS; 1.250 IN. DIA IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5935-00-201-64867479 INTERCHANGEABLE
Connector,plug,electrical
Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division
2910-00-228-7757 INTERCHANGEABLE
Diaphragm,actuator Valve,special
5365-01-218-1389747-9A INTERCHANGEABLE
Shim
Globe Food Equipment Company
3010-01-244-846407479 INTERCHANGEABLE
Diaphragm,clutch Cylinder
Stanley Black & Decker, Inc. Dba Stanley Hydraulic Tools Div Stanley Hydraulic Tools
Cross-Reference Index
Part NumberManufacturer
7479 PRIMARY The Chelsea Clock Llc (USA)
49-7C87-21 Naval Observatory (USA)
Related Parts
5935-00-201-6486INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
7479
2910-00-228-7757INTERCHANGEABLE
DIAPHRAGM,ACTUATOR VALVE,SPECIAL
5365-01-218-1389INTERCHANGEABLE
SHIM
747-9A
3010-01-244-8464INTERCHANGEABLE
DIAPHRAGM,CLUTCH CYLINDER
07479

Frequently Asked Questions

What is NSN 6645-00-163-0727?

NSN 6645-00-163-0727 is a Wheel,hour Gear, manufactured by The Chelsea Clock Llc, classified under FSC 6645 (No Item Name Available). Status: active.

What are the part numbers for NSN 6645-00-163-0727?

NSN 6645-00-163-0727 has 2 cross-referenced part numbers: 7479 (The Chelsea Clock Llc), 49-7C87-21 (Naval Observatory).

What NSN replaces 6645-00-163-0727?

There are 4 known substitutes for 6645-00-163-0727: 5935-00-201-6486, 2910-00-228-7757, 5365-01-218-1389 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7479?

Key specifications for 7479: General Characteristics Item Description: BRASS; 1.250 IN. DIA IN. 1 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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