PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

66-200Relay,electromagnetic

Wetherill Associates Inc · NSN 5945-01-102-6488 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-01-102-6488 — this item is cataloged by the U.S. Government under National Stock Number 5945-01-102-6488. Primary manufacturer part number: 66-200.
Features
  • Relay,electromagnetic — FSC 5945
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 2.100 INCHES MINIMUM AND 2.120 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN
  • Mounting Facility Pattern: IN-LINE SINGLE MOUNTING FACILITY
  • Operating Voltage Rating and Type at Specified Temp: 12.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
  • Mounting Slot Width: 0.272 INCHES MINIMUM AND 0.292 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN
  • Mounting Facility Type and Quantity: 2 SLOTTED HOLE SINGLE MOUNTING FACILITY
  • Winding Quantity: 1
  • Environmental Protection: WATERTIGHT
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-01-102-6488, 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 Wetherill Associates Inc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 26 commercial cross-references from 16 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5945-01-102-6488
Primary Part Number66-200
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerWetherill Associates Inc
StatusCANCELLED
Center to Center Distance Between Mounting Facilities Parallel to Length2.100 INCHES MINIMUM AND 2.120 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN
Mounting Facility PatternIN-LINE SINGLE MOUNTING FACILITY
Operating Voltage Rating and Type at Specified Temp12.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Mounting Slot Width0.272 INCHES MINIMUM AND 0.292 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN
Mounting Facility Type and Quantity2 SLOTTED HOLE SINGLE MOUNTING FACILITY
Winding Quantity1
Environmental ProtectionWATERTIGHT
Duty TypeCONTINUOUS
Coil Quantity1
Terminal Type and Quantity4 THREADED STUD ALL FUNCTIONS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
1660-00-031-574811450 INTERCHANGEABLE
Linkage
Triumph Thermal Systems - Maryland, Inc.
5865-00-118-248312701 INTERCHANGEABLE
Receiver Subassembly,countermeas
Drs Signal Solutions, Inc.
4730-00-119-371411450 INTERCHANGEABLE
Coupling Half,quick Disconnect
Haldex Brake Products Corporation
3010-00-144-3267 INTERCHANGEABLE
Disk,clutch,nonvehicular
3110-00-198-2282 INTERCHANGEABLE
Cone and Rollers,tapered Roller
5999-00-219-290911450 INTERCHANGEABLE
Contact,electrical
Leslie Controls, Inc. Dba Leslie Controls Inc
5950-00-231-4761 INTERCHANGEABLE
Transformer,audio Frequency
5920-00-243-5078N0S200 INTERCHANGEABLE
Fuse,cartridge
Cooper Bussmann, Llc Dba Cooper Industries
4730-00-288-977312-12 140238C INTERCHANGEABLE
Elbow,pipe
Sae International Dba Sae International
5330-00-400-8904454088 INTERCHANGEABLE
Gasket
Eastman Kodak Co
Cross-Reference Index
Part NumberManufacturer
B6A11450H Ford Motor Company (USA)
FF143A C E Niehoff & Co (USA)
12701 R C P Inc (CAN)
SW3 Arlet Mfg Inc (USA)
SS581 Standard Motor Products (USA)
454088 Nevada Electronics Inc (USA)
B6AZ-11450-A Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
15-3F Prestolite Div of Bunker Ramo-Eltra Corp Eltra Corp (USA)
B6AZ-11450-A Ford Motor Co Ford Parts and Service Div Industrial Engine Opns (USA)
BLAZ11450A Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
AR-581 Arlet Mfg Inc (USA)
B6A11450A Ford Motor Co Ford Parts and Service Div Industrial Engine Opns (USA)
66-200 PRIMARY Wetherill Associates Inc (USA)
SW3 Ozalid Corp (USA)
E360043 Bros Inc
SW3 Ford Motor Co Ford Parts and Service Div Government Part Sales (USA)
FF143A Trw Inc Replacement Parts Div (USA)
0115031 PRIMARY Lmc Operating Corp (USA)
SW3 Ford Motor Co General Parts Division (USA)
SW3 New Holland N.v.nc. (USA)
Related Parts
1660-00-031-5748INTERCHANGEABLE
LINKAGE
11450
5865-00-118-2483INTERCHANGEABLE
RECEIVER SUBASSEMBLY,COUNTERMEAS
12701
4730-00-119-3714INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
11450
3010-00-144-3267INTERCHANGEABLE
DISK,CLUTCH,NONVEHICULAR
3110-00-198-2282INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
5999-00-219-2909INTERCHANGEABLE
CONTACT,ELECTRICAL
11450
5950-00-231-4761INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5920-00-243-5078INTERCHANGEABLE
FUSE,CARTRIDGE
N0S200
4730-00-288-9773INTERCHANGEABLE
ELBOW,PIPE
12-12 140238C
5330-00-400-8904INTERCHANGEABLE
GASKET
454088
3895-00-430-9428INTERCHANGEABLE
SPACER,DUST SEAL,A,
11450
3020-00-453-7994INTERCHANGEABLE
LINK,ROLLER CHAIN
5B6389

Frequently Asked Questions

What is NSN 5945-01-102-6488?

NSN 5945-01-102-6488 is a Relay,electromagnetic, manufactured by Wetherill Associates Inc, classified under FSC 5945 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5945-01-102-6488?

NSN 5945-01-102-6488 has 26 cross-referenced part numbers: B6A11450H (Ford Motor Company), FF143A (C E Niehoff & Co), 12701 (R C P Inc), SW3 (Arlet Mfg Inc), SS581 (Standard Motor Products) and 21 more.

What NSN replaces 5945-01-102-6488?

There are 12 known substitutes for 5945-01-102-6488: 1660-00-031-5748, 5865-00-118-2483, 4730-00-119-3714 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 66-200?

Key specifications for 66-200: Overall Height: 2.540 INCHES MINIMUM AND 2.575 INCHES MAXIMUM IN; Center to Center Distance Between Mounting Facilities Parallel to Length: 2.100 INCHES MINIMUM AND 2.120 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN; Mounting Facility Pattern: IN-LINE SINGLE MOUNTING FACILITY; Operating Voltage Rating and Type at Specified Temp: 12.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5945-01-102-6488 still in active supply?

NSN 5945-01-102-6488 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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