PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18-254BTimer,sequential

Hoyt Corporation · NSN 6645-01-122-3764 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-01-122-3764 — this item is cataloged by the U.S. Government under National Stock Number 6645-01-122-3764. Primary manufacturer part number: 18-254B.
Features
  • Timer,sequential — FSC 6645
  • Current Type: AC
  • Operation Method: MOTOR DRIVEN
  • Timer Type: ELECTRICAL
  • 3 verified cross-references
  • Primary manufacturer: Hoyt Corporation
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Timer,sequential, cataloged under National Stock Number 6645-01-122-3764, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Hoyt Corporation. Government technical data includes 3 verified specifications, 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6645-01-122-3764
Primary Part Number18-254B
Item NameTimer,sequential
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerHoyt Corporation
StatusACTIVE
Current TypeAC
Operation MethodMOTOR DRIVEN
Timer TypeELECTRICAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5930-00-975-79734763 INTERCHANGEABLE
Switch,electrical
Hoyt Corporation
5935-01-228-8616039-686 INTERCHANGEABLE
Connector,receptacle,electrical
Miller Electric Mfg. Llc
Cross-Reference Index
Part NumberManufacturer
013-36424 Mallory Timers Co Div of Emhart Industries Inc (USA)
18-254B PRIMARY Hoyt Corporation (USA)
4763-A Hoyt Corporation (USA)
Related Parts
5930-00-975-7973INTERCHANGEABLE
SWITCH,ELECTRICAL
4763
5935-01-228-8616INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
039-686

Frequently Asked Questions

What is NSN 6645-01-122-3764?

NSN 6645-01-122-3764 is a Timer,sequential, manufactured by Hoyt Corporation, classified under FSC 6645 (No Item Name Available). Status: active.

What are the part numbers for NSN 6645-01-122-3764?

NSN 6645-01-122-3764 has 3 cross-referenced part numbers: 013-36424 (Mallory Timers Co Div of Emhart Industries Inc), 18-254B (Hoyt Corporation), 4763-A (Hoyt Corporation).

What NSN replaces 6645-01-122-3764?

There are 2 known substitutes for 6645-01-122-3764: 5930-00-975-7973, 5935-01-228-8616. Verify interchangeability with system specifications before substitution.

What are the specifications of 18-254B?

Key specifications for 18-254B: Current Type: AC; Operation Method: MOTOR DRIVEN; Timer Type: ELECTRICAL. 3 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com