PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S-45Contact Set,relay

Lincoln Electric Holdings Inc · NSN 5945-01-574-8664 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-01-574-8664 — this item is cataloged by the U.S. Government under National Stock Number 5945-01-574-8664. Primary manufacturer part number: S-45.
Features
  • Contact Set,relay — FSC 5945
  • 1 verified cross-reference
  • Primary manufacturer: Lincoln Electric Holdings Inc
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Contact Set,relay, cataloged under National Stock Number 5945-01-574-8664, is classified within Federal Supply Class 5945 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Lincoln Electric Holdings Inc. This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN5945-01-574-8664
Primary Part NumberS-45
Item NameContact Set,relay
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerLincoln Electric Holdings Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
6240-00-050-4520 INTERCHANGEABLE
Lamp,incandescent
5940-00-089-8698S45 INTERCHANGEABLE
Adapter,solder Cup
Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect
4820-00-383-7983 INTERCHANGEABLE
Stem,fluid Valve
4320-01-055-4059S45-2.5IN-STD INTERCHANGEABLE
Pump Unit,centrifugal
Armstrong Pumps Inc
4720-01-146-4125 INTERCHANGEABLE
Hose,nonmetallic
5965-01-449-2706S-45 INTERCHANGEABLE
Headset-Microphone
Sigtronics Corporation Dba Sigtronics Corp
7330-01-599-9371S-45 INTERCHANGEABLE
Scoop,kitchen
Ampco Partners, Ltd. Dba Ampco Safety Tools
Cross-Reference Index
Part NumberManufacturer
S-45 PRIMARY Lincoln Electric Holdings Inc (USA)
Related Parts
6240-00-050-4520INTERCHANGEABLE
LAMP,INCANDESCENT
5940-00-089-8698INTERCHANGEABLE
ADAPTER,SOLDER CUP
S45
4820-00-383-7983INTERCHANGEABLE
STEM,FLUID VALVE
4320-01-055-4059INTERCHANGEABLE
PUMP UNIT,CENTRIFUGAL
S45-2.5IN-STD
4720-01-146-4125INTERCHANGEABLE
HOSE,NONMETALLIC
5965-01-449-2706INTERCHANGEABLE
HEADSET-MICROPHONE
S-45
7330-01-599-9371INTERCHANGEABLE
SCOOP,KITCHEN
S-45

Frequently Asked Questions

What is NSN 5945-01-574-8664?

NSN 5945-01-574-8664 is a Contact Set,relay, manufactured by Lincoln Electric Holdings Inc, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-01-574-8664?

NSN 5945-01-574-8664 has 1 cross-referenced part number: S-45 (Lincoln Electric Holdings Inc).

What NSN replaces 5945-01-574-8664?

There are 7 known substitutes for 5945-01-574-8664: 6240-00-050-4520, 5940-00-089-8698, 4820-00-383-7983 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S-45?

Key specifications for S-45: Special Features: T.O. 34W4-76-1 IM-243-A; Part Name Assigned by Controlling Agency: OUTPUT CONTACTOR. 2 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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