PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

517170-1Relay,electromagnetic

Instruments and Flight Research, Inc. · NSN 5945-00-688-2398 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-688-2398 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-688-2398. Primary manufacturer part number: 517170-1.
Features
  • Relay,electromagnetic — FSC 5945
  • Environmental Protection: HERMETIC
  • Storage Type: GENERAL PURPOSE WAREHOUSE
  • Duty Type: CONTINUOUS
  • Coil Quantity: 1
  • Thread Class: 2B SINGLE MOUNTING FACILITY
  • Winding DC Resistance Rating: 365.0 OHMS NOMINAL SINGLE WINDING
  • Precious Material: SILVER
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
  • Applications requiring Silver Contact construction
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-688-2398, 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 Instruments and Flight Research, Inc.. Government technical data includes 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-00-688-2398
Primary Part Number517170-1
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerInstruments and Flight Research, Inc.
StatusACTIVE
Environmental ProtectionHERMETIC
Storage TypeGENERAL PURPOSE WAREHOUSE
Duty TypeCONTINUOUS
Coil Quantity1
Thread Class2B SINGLE MOUNTING FACILITY
Winding DC Resistance Rating365.0 OHMS NOMINAL SINGLE WINDING
Precious MaterialSILVER
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Main Contact Load Current Rating at Maximum Rated Voltage3.0 AMPERES AC AND 3.0 AMPERES DC RESISTIVE LOAD
Purpose for Which DesignedGENERAL
Nominal Thread Size0.138 INCHES SINGLE MOUNTING FACILITY IN
Main Contact Load Current Rating at Maximum Rated Voltage3.0 AMPERES AC AND 1.5 AMPERES DC INDUCTIVE LOAD
Mounting Facility PatternIN-LINE SINGLE MOUNTING FACILITY
Thread DirectionRIGHT-HAND SINGLE MOUNTING FACILITY
Mounting Facility Type and Quantity2 THREADED HOLE(S) SINGLE MOUNTING FACILITY
Precious Material and LocationCONTACTS SILVER
Cubic Measure2.162 CUBIC INCHES
Nonpile-Up Main Contact Arrangement4 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Terminal Type and Quantity14 PIN ALL FUNCTIONS
MaterialSILVER CONTACT
Main Contact Maximum Voltage Rating in Volts115.0 AC AND 26.5 DC
Time Delay0.01 SECONDS MAXIMUM FIXED RELEASE TIME
Fragility FactorMODERATELY RUGGED
Arc Quenching MethodAIR
Winding Quantity1
Thread Quantity Per Inch32 SINGLE MOUNTING FACILITY
Operating Voltage Rating and Type at Specified Temp28.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4730-01-018-60837125 INTERCHANGEABLE
Cap,pipe
Randall Mfg. Co., Inc.
5355-01-225-9696517170-1 INTERCHANGEABLE
Mask,dial
Naval Air Warfare Center Aircraft Division Joint Base Jbmdl
5315-01-648-388192373A679 INTERCHANGEABLE
Pin,spring
Mcmaster-Carr Supply Co
Cross-Reference Index
Part NumberManufacturer
MH4481-9 Te Connectivity Corporation (USA)
5424-85HP Te Connectivity Corporation (USA)
HMDP2B4C365 Relays Inc (USA)
517170-1 PRIMARY Instruments and Flight Research, Inc. (USA)
94-3358 Midland-Ross Corp Midtex Div
5424-85HP Airpax Corporation Llc Dba Airpax Corporation Llc (USA)
78002-6 Olympic Controls Corp (USA)
Related Parts
4730-01-018-6083INTERCHANGEABLE
CAP,PIPE
7125
5355-01-225-9696INTERCHANGEABLE
MASK,DIAL
517170-1
5315-01-648-3881INTERCHANGEABLE
PIN,SPRING
92373A679

Frequently Asked Questions

What is NSN 5945-00-688-2398?

NSN 5945-00-688-2398 is a Relay,electromagnetic, manufactured by Instruments and Flight Research, Inc., classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-688-2398?

NSN 5945-00-688-2398 has 7 cross-referenced part numbers: MH4481-9 (Te Connectivity Corporation), 5424-85HP (Te Connectivity Corporation), HMDP2B4C365 (Relays Inc), 517170-1 (Instruments and Flight Research, Inc.), 94-3358 (Midland-Ross Corp Midtex Div) and 2 more.

What NSN replaces 5945-00-688-2398?

There are 3 known substitutes for 5945-00-688-2398: 4730-01-018-6083, 5355-01-225-9696, 5315-01-648-3881. Verify interchangeability with system specifications before substitution.

What are the specifications of 517170-1?

Key specifications for 517170-1: Environmental Protection: HERMETIC; Storage Type: GENERAL PURPOSE WAREHOUSE; Duty Type: CONTINUOUS; Coil Quantity: 1. 30 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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