PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1272Winder,mainspring

The Chelsea Clock Llc · NSN 6645-00-719-9063 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-719-9063 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-719-9063. Primary manufacturer part number: 1272.
Features
  • Winder,mainspring — FSC 6645
  • General Characteristics Item Description: BRASS
  • 2 verified cross-references
  • Primary manufacturer: The Chelsea Clock Llc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Winder,mainspring, cataloged under National Stock Number 6645-00-719-9063, 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 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6645-00-719-9063
Primary Part Number1272
Item NameWinder,mainspring
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerThe Chelsea Clock Llc
StatusCANCELLED
General Characteristics Item DescriptionBRASS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3120-00-166-4794 INTERCHANGEABLE
Bearing,sleeve
5120-00-203-47941272 INTERCHANGEABLE
Wrench,open End
Martin Sprocket and Gear Inc
6250-00-224-62658192264 INTERCHANGEABLE
Lampholder
Us Army Aviation and Missile Command
5975-00-240-2634115 INTERCHANGEABLE
Bushing,electrical Conduit
Abb Installation Products Inc
5310-00-291-68912234 INTERCHANGEABLE
Washer,flat
Lubriquip Inc Dba Lubriquip, Inc., a Unit of Idex
5305-00-448-3646 INTERCHANGEABLE
Screw,machine
4310-00-491-00941272 INTERCHANGEABLE
Washer-Head Bolt
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
5340-00-616-50689619 INTERCHANGEABLE
Caster,swivel
Albion Industries, Inc.
5841-00-761-4084 INTERCHANGEABLE
Indicator,height
1615-00-909-75721272 INTERCHANGEABLE
Plate,thrust
Doral, Inc Dba J & F Engineering
Cross-Reference Index
Part NumberManufacturer
1500 The Chelsea Clock Llc (USA)
1272 PRIMARY The Chelsea Clock Llc (USA)
Related Parts
3120-00-166-4794INTERCHANGEABLE
BEARING,SLEEVE
5120-00-203-4794INTERCHANGEABLE
WRENCH,OPEN END
1272
6250-00-224-6265INTERCHANGEABLE
LAMPHOLDER
8192264
5975-00-240-2634INTERCHANGEABLE
BUSHING,ELECTRICAL CONDUIT
115
5310-00-291-6891INTERCHANGEABLE
WASHER,FLAT
2234
5305-00-448-3646INTERCHANGEABLE
SCREW,MACHINE
4310-00-491-0094INTERCHANGEABLE
WASHER-HEAD BOLT
1272
5340-00-616-5068INTERCHANGEABLE
CASTER,SWIVEL
9619
5841-00-761-4084INTERCHANGEABLE
INDICATOR,HEIGHT
1615-00-909-7572INTERCHANGEABLE
PLATE,THRUST
1272
5325-00-960-8285INTERCHANGEABLE
EYELET,METALLIC
10630000-25
5950-01-045-8722INTERCHANGEABLE
TRANSFORMER,PULSE
806238

Frequently Asked Questions

What is NSN 6645-00-719-9063?

NSN 6645-00-719-9063 is a Winder,mainspring, manufactured by The Chelsea Clock Llc, classified under FSC 6645 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6645-00-719-9063?

NSN 6645-00-719-9063 has 2 cross-referenced part numbers: 1500 (The Chelsea Clock Llc), 1272 (The Chelsea Clock Llc).

What NSN replaces 6645-00-719-9063?

There are 12 known substitutes for 6645-00-719-9063: 3120-00-166-4794, 5120-00-203-4794, 6250-00-224-6265 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1272?

Key specifications for 1272: General Characteristics Item Description: BRASS. 1 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6645-00-719-9063 still in active supply?

NSN 6645-00-719-9063 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.
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