PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20146Timing Movement,mechanical

L & R Manufacturing Company · NSN 6645-00-881-1075 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-881-1075 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-881-1075. Primary manufacturer part number: 20146.
Features
  • Timing Movement,mechanical — FSC 6645
  • 2 verified cross-references
  • Primary manufacturer: L & R Manufacturing Company
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Timing Movement,mechanical, cataloged under National Stock Number 6645-00-881-1075, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is L & R Manufacturing Company. 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: Active.

Technical Specifications
ParameterValue
NSN6645-00-881-1075
Primary Part Number20146
Item NameTiming Movement,mechanical
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerL & R Manufacturing Company
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4925-00-088-793120146 INTERCHANGEABLE
Wrench,fuze Lug
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5133-00-228-1393 INTERCHANGEABLE
Drill,twist
5360-00-361-0566 INTERCHANGEABLE
Spring,helical,compression
6605-00-399-2131201-46 INTERCHANGEABLE
Carriage,stadimeter
Carbonara Labs Inc
4810-00-505-141420146 INTERCHANGEABLE
Guide,solenoid
Pneudraulics, Inc.
5998-01-018-0826 INTERCHANGEABLE
Extender Card,electronic Test
5310-01-079-706120-146 INTERCHANGEABLE
Nut,plain,hexagon
Motorola Automotive Electronics
4820-01-159-5965B7327-001-108 INTERCHANGEABLE
Disk,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-167-440410443001156 INTERCHANGEABLE
Seat,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4920-01-300-202320146 INTERCHANGEABLE
Test Program Set
Textron Systems Corporation Dba Textron Systems Corp
Cross-Reference Index
Part NumberManufacturer
SK10488 L & R Manufacturing Company (USA)
20146 PRIMARY L & R Manufacturing Company (USA)
Related Parts
4925-00-088-7931INTERCHANGEABLE
WRENCH,FUZE LUG
20146
5133-00-228-1393INTERCHANGEABLE
DRILL,TWIST
5360-00-361-0566INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
6605-00-399-2131INTERCHANGEABLE
CARRIAGE,STADIMETER
201-46
4810-00-505-1414INTERCHANGEABLE
GUIDE,SOLENOID
20146
5998-01-018-0826INTERCHANGEABLE
EXTENDER CARD,ELECTRONIC TEST
5310-01-079-7061INTERCHANGEABLE
NUT,PLAIN,HEXAGON
20-146
4820-01-159-5965INTERCHANGEABLE
DISK,VALVE
B7327-001-108
4820-01-167-4404INTERCHANGEABLE
SEAT,VALVE
10443001156
4920-01-300-2023INTERCHANGEABLE
TEST PROGRAM SET
20146
5950-01-317-1888INTERCHANGEABLE
TRANSFORMER,POWER
3191419-104-103
5310-01-664-3426INTERCHANGEABLE
WASHER,LOCK
20-14-6

Frequently Asked Questions

What is NSN 6645-00-881-1075?

NSN 6645-00-881-1075 is a Timing Movement,mechanical, manufactured by L & R Manufacturing Company, classified under FSC 6645 (No Item Name Available). Status: active.

What are the part numbers for NSN 6645-00-881-1075?

NSN 6645-00-881-1075 has 2 cross-referenced part numbers: SK10488 (L & R Manufacturing Company), 20146 (L & R Manufacturing Company).

What NSN replaces 6645-00-881-1075?

There are 12 known substitutes for 6645-00-881-1075: 4925-00-088-7931, 5133-00-228-1393, 5360-00-361-0566 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20146?

Key specifications for 20146: Special Features: 15 MIN TIMER W/12 MIN CONSUMING APPROX 288 DEGREES; 3/8-32 THREADED MTG HUB, 1/4 IN. SHAFT DIA; 1 11/16 IN. ACROSS FLATS 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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