PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

22300818Barrel

Waltham Aircraft Clock Corp · NSN 6645-00-536-1487 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-00-536-1487 — this item is cataloged by the U.S. Government under National Stock Number 6645-00-536-1487. Primary manufacturer part number: 22300818.
Features
  • Barrel — FSC 6645
  • General Characteristics Item Description: STEEL; 0.875 IN. NOM DIA; 0.500 IN. NOM DP IN
  • 3 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 Barrel, cataloged under National Stock Number 6645-00-536-1487, 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 3 commercial cross-references from 2 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
NSN6645-00-536-1487
Primary Part Number22300818
Item NameBarrel
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerWaltham Aircraft Clock Corp
StatusACTIVE
General Characteristics Item DescriptionSTEEL; 0.875 IN. NOM DIA; 0.500 IN. NOM DP IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5305-00-054-5646 INTERCHANGEABLE
Screw,machine
5136-00-239-2772401029 INTERCHANGEABLE
Die,thread Cutting
Greenfield Industries Inc
5950-00-648-024550-112085-1REVC INTERCHANGEABLE
Transformer,radio Frequency
General Dynamics Mission Systems, Inc.
2520-00-733-73347337334 INTERCHANGEABLE
Parts Kit,universal Joint
U S Army Tank Automotive Command Amsta-Im-Mm
5930-01-051-2777 INTERCHANGEABLE
Switch,slide
5930-01-064-16175112-271478 INTERCHANGEABLE
Switch,slide
Fluke Corp
5998-01-349-2288 INTERCHANGEABLE
Circuit Card Assembly
Cross-Reference Index
Part NumberManufacturer
22300818 PRIMARY Waltham Aircraft Clock Corp (USA)
22300818 Waltham Clock Co Inc (USA)
23021 Waltham Clock Co Inc (USA)
Related Parts
5305-00-054-5646INTERCHANGEABLE
SCREW,MACHINE
5136-00-239-2772INTERCHANGEABLE
DIE,THREAD CUTTING
401029
5950-00-648-0245INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
50-112085-1REVC
2520-00-733-7334INTERCHANGEABLE
PARTS KIT,UNIVERSAL JOINT
7337334
5930-01-051-2777INTERCHANGEABLE
SWITCH,SLIDE
5930-01-064-1617INTERCHANGEABLE
SWITCH,SLIDE
5112-271478
5998-01-349-2288INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY

Frequently Asked Questions

What is NSN 6645-00-536-1487?

NSN 6645-00-536-1487 is a Barrel, manufactured by Waltham Aircraft Clock Corp, classified under FSC 6645 (No Item Name Available). Status: active.

What are the part numbers for NSN 6645-00-536-1487?

NSN 6645-00-536-1487 has 3 cross-referenced part numbers: 22300818 (Waltham Aircraft Clock Corp), 22300818 (Waltham Clock Co Inc), 23021 (Waltham Clock Co Inc).

What NSN replaces 6645-00-536-1487?

There are 7 known substitutes for 6645-00-536-1487: 5305-00-054-5646, 5136-00-239-2772, 5950-00-648-0245 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 22300818?

Key specifications for 22300818: General Characteristics Item Description: STEEL; 0.875 IN. NOM DIA; 0.500 IN. NOM DP 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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