PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

172-310CA7Relay,reed

Hamlin Inc · NSN 5945-00-477-8181 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-477-8181 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-477-8181. Primary manufacturer part number: 172-310CA7.
Features
  • Relay,reed — FSC 5945
  • Coil Quantity: 1
  • Operating Voltage Rating and Type at Specified Temp: 12.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
  • Main Contact Maximum Voltage Rating in Volts: 200.0 DC
  • Nonpile-Up Main Contact Arrangement: 1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
  • Mounting Facility Type and Quantity: 1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY
  • Terminal Type and Quantity: 4 PIN ALL FUNCTIONS
  • Main Contact Load Current Rating at Maximum Rated Voltage: 500.0 MILLIAMPERES DC RESISTIVE LOAD
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,reed, cataloged under National Stock Number 5945-00-477-8181, 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 Hamlin Inc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5945-00-477-8181
Primary Part Number172-310CA7
Item NameRelay,reed
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerHamlin Inc
StatusCANCELLED
Coil Quantity1
Operating Voltage Rating and Type at Specified Temp12.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Main Contact Maximum Voltage Rating in Volts200.0 DC
Nonpile-Up Main Contact Arrangement1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
Mounting Facility Type and Quantity1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY
Terminal Type and Quantity4 PIN ALL FUNCTIONS
Main Contact Load Current Rating at Maximum Rated Voltage500.0 MILLIAMPERES DC RESISTIVE LOAD
Environmental ProtectionDUSTPROOF
Duty TypeCONTINUOUS
Winding Quantity1
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5935-00-925-250610193901-002 INTERCHANGEABLE
Plug,tip
Us Army Aviation and Missile Command
5330-01-025-441322065-3 INTERCHANGEABLE
Retainer,packing
Rockwell Collins Inc
4730-01-691-590622065-3 INTERCHANGEABLE
Adapter,straight,pipe to Hose
Hydraulics International, Inc. Dba Hydraulics International Inc
Cross-Reference Index
Part NumberManufacturer
172-310CA7 Hamlin Inc (USA)
172-310CA7 Midland-Ross Corp Midtex Div
R4445-2 Elec-Trol Inc (USA)
172-310CA7 Midtex Relays Inc (USA)
RFX241 Allied Controls, Inc. (USA)
22-0653 Aiken Advanced Systems Inc a Div of Amstar Technical Products Inc an Affil of Amstar Corp (USA)
SC4421 Aiken Advanced Systems Inc a Div of Amstar Technical Products Inc an Affil of Amstar Corp (USA)
330-321 Computer Components, Inc Dba Relays Unlimited (USA)
Related Parts
5935-00-925-2506INTERCHANGEABLE
PLUG,TIP
10193901-002
5330-01-025-4413INTERCHANGEABLE
RETAINER,PACKING
22065-3
4730-01-691-5906INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO HOSE
22065-3

Frequently Asked Questions

What is NSN 5945-00-477-8181?

NSN 5945-00-477-8181 is a Relay,reed, manufactured by Hamlin Inc, classified under FSC 5945 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5945-00-477-8181?

NSN 5945-00-477-8181 has 8 cross-referenced part numbers: 172-310CA7 (Hamlin Inc), 172-310CA7 (Midland-Ross Corp Midtex Div), R4445-2 (Elec-Trol Inc), 172-310CA7 (Midtex Relays Inc), RFX241 (Allied Controls, Inc.) and 3 more.

What NSN replaces 5945-00-477-8181?

There are 3 known substitutes for 5945-00-477-8181: 5935-00-925-2506, 5330-01-025-4413, 4730-01-691-5906. Verify interchangeability with system specifications before substitution.

What are the specifications of 172-310CA7?

Key specifications for 172-310CA7: Coil Quantity: 1; Operating Voltage Rating and Type at Specified Temp: 12.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING; Main Contact Maximum Voltage Rating in Volts: 200.0 DC; Nonpile-Up Main Contact Arrangement: 1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5945-00-477-8181 still in active supply?

NSN 5945-00-477-8181 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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