NSN 5945-01-030-3171 · NIIN 010303171 · Part number 21-177
Te Connectivity Corporation · FSC 5945 — Relays and Solenoids · FSG 59 — Electrical and Electronic Equipment Components · CAGE 18741
Government record, cited
NSN 5945-01-030-3171 — this item is cataloged by the U.S. Government under National Stock Number 5945-01-030-3171. Manufacturer of record part number: 21-177.
Also searched as5945-01-030-3171 ·
5945010303171 ·
NIIN 010303171 ·
01-030-3171 ·
FSC 5945 Relays and Solenoids · CAGE 18741 · 21-177 · D101-5X
Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Main Contact Maximum Voltage Rating in Volts: 120.0 AC AND 28.0 DC
Mounting Facility Pattern: RECTANGULAR SINGLE MOUNTING FACILITY
Center to Center Distance Between Mounting Facilities Parallel to Length: 5.000 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Main Contact Load Current Rating at Maximum Rated Voltage: 10.0 AMPERES AC AND 10.0 AMPERES DC RESISTIVE LOAD
Duty Type: CONTINUOUS
Unthreaded Mounting Hole Diameter: 0.234 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Identification
NSN: 5945-01-030-3171
NIIN: 010303171
FSC: 5945 — Relays and Solenoids
FSG: 59 — Electrical and Electronic Equipment Components
Primary part number: 21-177
Manufacturer: Te Connectivity Corporation
General Description
The Relay,electromagnetic, cataloged under National Stock Number 5945-01-030-3171, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Te Connectivity Corporation. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5945-01-030-3171
Primary Part Number
21-177
Item Name
Relay,electromagnetic
FSC / FSG
5945 / 59 — Relays and Solenoids
Manufacturer
Te Connectivity Corporation
Status
ACTIVE
Mounting Facility Type and Quantity
4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Main Contact Maximum Voltage Rating in Volts
120.0 AC AND 28.0 DC
Mounting Facility Pattern
RECTANGULAR SINGLE MOUNTING FACILITY
Center to Center Distance Between Mounting Facilities Parallel to Length
5.000 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Main Contact Load Current Rating at Maximum Rated Voltage
10.0 AMPERES AC AND 10.0 AMPERES DC RESISTIVE LOAD
Duty Type
CONTINUOUS
Unthreaded Mounting Hole Diameter
0.234 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Frequency in Hertz
60.0 NOMINAL
Coil Quantity
1
Winding Quantity
1
Operating Voltage Rating and Type at Specified Temp
120.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING
Center to Center Distance Between Mounting Facilities Parallel to Width
4.000 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Terminal Type and Quantity
8 PIN ALL FUNCTIONS
Nonpile-Up Main Contact Arrangement
2 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items8
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5950-01-085-888221177POSSIBLE MATCH
COIL,RADIO FREQUENCY
Possible match (shared part number)Vanguard Electronics, Llc
5998-01-097-851021177POSSIBLE MATCH
CIRCUIT CARD ASSEMBLY
Possible match (shared part number)Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
5962-01-173-1511POSSIBLE MATCH
MICROCIRCUIT
Possible match (shared part number)
4320-01-278-104321177POSSIBLE MATCH
HANGER,PUMP
Possible match (shared part number)Parker Hannifin Corporation Div Hydraulic Systems Division
6640-01-308-55842117703POSSIBLE MATCH
DISTILLATION HEAD,MICRO-KJELDAHL
Possible match (shared part number)Labconco Corp
5998-01-370-815421177POSSIBLE MATCH
CIRCUIT CARD ASSEMBLY
Possible match (shared part number)Anritsu Instruments Company Div Mbu
2640-01-416-862821-177POSSIBLE MATCH
VALVE,PNEUMATIC TIRE
Possible match (shared part number)Myers Tire Supply Distribution Inc Div Akron Branch
3020-01-527-8286C-618P-60POSSIBLE MATCH
GEAR,DRIVE MOTION
Possible match (shared part number)Blue-White Industries, Ltd. Dba Blue-White Industries Ltd Div Blue-White Industries - Huntington Beach, Ca
NSN 5945-01-030-3171 is a Relay,electromagnetic, manufactured by Te Connectivity Corporation, classified under FSC 5945, Relays and Solenoids. Status: active.
What part numbers are listed for NSN 5945-01-030-3171?
NSN 5945-01-030-3171 has 2 manufacturer part numbers on file: 21-177 (Te Connectivity Corporation), D101-5X (Te Connectivity Corporation).
What NSN replaces 5945-01-030-3171?
8 possible matches (shared part number, not a government interchangeability claim): 5950-01-085-8882, 5998-01-097-8510, 5962-01-173-1511. Verify interchangeability with system specifications before substitution.
What are the specifications of 21-177?
Key specifications for 21-177: Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Overall Height: 2.688 INCHES NOMINAL IN; Main Contact Maximum Voltage Rating in Volts: 120.0 AC AND 28.0 DC; Mounting Facility Pattern: RECTANGULAR SINGLE MOUNTING FACILITY. 14 specifications are documented in the U.S. Government catalog.
Is NSN 5945-01-030-3171 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.