PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2277Sprongmain,complete

Waltham Clock Co Inc · NSN 6645-00-547-4388 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-547-4388 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-547-4388. Primary manufacturer part number: 2277.
Features
  • Sprongmain,complete — FSC 6645
  • 1 verified cross-reference
  • Primary manufacturer: Waltham Clock Co Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Sprongmain,complete, cataloged under National Stock Number 6645-00-547-4388, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Waltham Clock Co Inc. This item has 1 commercial cross-reference 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: Active.

Catalog Facts
Item NameSprongmain,complete
FSC / FSG6645 — No Item Name Available (FSG 66)
ManufacturersWaltham Clock Co Inc (CAGE 79300)
Technical Specifications
ParameterValue
NSN6645-00-547-4388
Primary Part Number2277
Item NameSprongmain,complete
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerWaltham Clock Co Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6625-00-038-4561 INTERCHANGEABLE
Interface,cable Assembly
5325-00-202-4002 INTERCHANGEABLE
Grommet,nonmetallic
5365-00-209-56642277 INTERCHANGEABLE
Shim
Ontic Engineering & Manufacturing, Inc Dba Ontic Us
6685-00-253-7693 INTERCHANGEABLE
Plate Assembly
5950-00-615-4563 INTERCHANGEABLE
Coil,radio Frequency
5935-00-951-51563070-0001 INTERCHANGEABLE
Adapter,connector
Sv Microwave, Inc. Div Sv Microwave
4730-01-124-4120 INTERCHANGEABLE
Elbow,drainage Pipe
9390-01-210-7077 INTERCHANGEABLE
Sheeting,reflective
5315-01-276-91032277 INTERCHANGEABLE
Pin,straight,headed
Curtiss-Wright Electro-Mechanical Corporation Div Epd
6515-01-366-31922277-0000 INTERCHANGEABLE
Administration Set,infusion Pump
Carefusion Solutions, Llc Div Mms
Cross-Reference Index
Part NumberManufacturer
2277 Waltham Clock Co Inc (USA)
Related Parts
6625-00-038-4561INTERCHANGEABLE
INTERFACE,CABLE ASSEMBLY
5325-00-202-4002INTERCHANGEABLE
GROMMET,NONMETALLIC
5365-00-209-5664INTERCHANGEABLE
SHIM
2277
6685-00-253-7693INTERCHANGEABLE
PLATE ASSEMBLY
5950-00-615-4563INTERCHANGEABLE
COIL,RADIO FREQUENCY
5935-00-951-5156INTERCHANGEABLE
ADAPTER,CONNECTOR
3070-0001
4730-01-124-4120INTERCHANGEABLE
ELBOW,DRAINAGE PIPE
9390-01-210-7077INTERCHANGEABLE
SHEETING,REFLECTIVE
5315-01-276-9103INTERCHANGEABLE
PIN,STRAIGHT,HEADED
2277
6515-01-366-3192INTERCHANGEABLE
ADMINISTRATION SET,INFUSION PUMP
2277-0000
5331-01-380-2606INTERCHANGEABLE
O-RING
154B3626
5975-01-660-8493INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
2277

Frequently Asked Questions

What is NSN 6645-00-547-4388?

NSN 6645-00-547-4388 is a Sprongmain,complete, manufactured by Waltham Clock Co Inc, classified under FSC 6645 (No Item Name Available). Status: active.

What are the part numbers for NSN 6645-00-547-4388?

NSN 6645-00-547-4388 has 1 cross-referenced part number: 2277 (Waltham Clock Co Inc).

What NSN replaces 6645-00-547-4388?

There are 12 known substitutes for 6645-00-547-4388: 6625-00-038-4561, 5325-00-202-4002, 5365-00-209-5664 and 9 more. Verify interchangeability with system specifications before substitution.

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