PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

200875Wheel and Pinion Assembly

Waltham Aircraft Clock Corp · NSN 6645-00-536-1546 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-536-1546 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-536-1546. Primary manufacturer part number: 200875.
Features
  • Wheel and Pinion Assembly — FSC 6645
  • General Characteristics Item Description: BRASS; 3/8 IN. DIA IN
  • 6 verified cross-references
  • Primary manufacturer: Waltham Aircraft Clock Corp
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Wheel and Pinion Assembly, cataloged under National Stock Number 6645-00-536-1546, 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 Aircraft Clock Corp. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6645-00-536-1546
Primary Part Number200875
Item NameWheel and Pinion Assembly
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerWaltham Aircraft Clock Corp
StatusACTIVE
General Characteristics Item DescriptionBRASS; 3/8 IN. DIA IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
3110-00-227-2436 INTERCHANGEABLE
Bearing,roller,self-Aligning
2940-00-361-9859 INTERCHANGEABLE
Ring
6105-00-617-03922312-6 INTERCHANGEABLE
Motor,direct Current
Kearfott Corporation Div Guidance and Navigation Division
3010-00-643-4176RD16397 INTERCHANGEABLE
Gearcase-Motor
Mas Components & Coatings, Llc Dba Mas Components & Coatings Llc
4820-01-130-5659200875 INTERCHANGEABLE
Diaphragm,actuator Valve,special
Parker-Hannifin Corporation Dba Refrigeration Specialties Div Refrigerating Specialties Division
5360-01-196-244023126 INTERCHANGEABLE
Spring,helical,compression
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
5950-01-204-6152 INTERCHANGEABLE
Reactor
Cross-Reference Index
Part NumberManufacturer
10333971 Nimikkeistokeskus Ncb Finland (FIN)
23126 Essex Group Inc Industrial Wire Div (USA)
200875 PRIMARY Waltham Aircraft Clock Corp (USA)
22300926 Waltham Clock Co Inc (USA)
200875 Waltham Clock Co Inc (USA)
23126 Waltham Clock Co Inc (USA)
Related Parts
3110-00-227-2436INTERCHANGEABLE
BEARING,ROLLER,SELF-ALIGNING
2940-00-361-9859INTERCHANGEABLE
RING
6105-00-617-0392INTERCHANGEABLE
MOTOR,DIRECT CURRENT
2312-6
3010-00-643-4176INTERCHANGEABLE
GEARCASE-MOTOR
RD16397
4820-01-130-5659INTERCHANGEABLE
DIAPHRAGM,ACTUATOR VALVE,SPECIAL
200875
5360-01-196-2440INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
23126
5950-01-204-6152INTERCHANGEABLE
REACTOR

Frequently Asked Questions

What is NSN 6645-00-536-1546?

NSN 6645-00-536-1546 is a Wheel and Pinion Assembly, manufactured by Waltham Aircraft Clock Corp, classified under FSC 6645 (No Item Name Available). Status: active.

What are the part numbers for NSN 6645-00-536-1546?

NSN 6645-00-536-1546 has 6 cross-referenced part numbers: 10333971 (Nimikkeistokeskus Ncb Finland), 23126 (Essex Group Inc Industrial Wire Div), 200875 (Waltham Aircraft Clock Corp), 22300926 (Waltham Clock Co Inc), 200875 (Waltham Clock Co Inc) and 1 more.

What NSN replaces 6645-00-536-1546?

There are 7 known substitutes for 6645-00-536-1546: 3110-00-227-2436, 2940-00-361-9859, 6105-00-617-0392 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 200875?

Key specifications for 200875: General Characteristics Item Description: BRASS; 3/8 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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