PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

HR1Contact,electrical

Communications & Power Industries Llc Dba Cpi Div Microwave Power Products Division - Eimac Operations · NSN 5999-00-534-7823 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-534-7823 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-534-7823. Primary manufacturer part number: HR1.
Features
  • Contact,electrical — FSC 5999
  • Overall Diameter: 0.500 INCHES NOMINAL IN
  • Mounting Method: UNTHREADED HOLE(S)
  • Material: ALUMINUM BODY AND CONTACT
  • Unthreaded Mounting Hole Diameter: 0.550 INCHES NOMINAL IN
  • Mounting Facility Quantity: 1
  • Terminal Type and Quantity: 1 SCREW AXIALLY AT ONE END
  • Overall Diameter: 0.500 INCHES NOMINAL IN
Applications
  • Applications requiring Aluminum Body and Contact construction
General Description

The Contact,electrical, cataloged under National Stock Number 5999-00-534-7823, is classified within Federal Supply Class 5999 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Communications & Power Industries Llc Dba Cpi Div Microwave Power Products Division - Eimac Operations. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5999-00-534-7823
Primary Part NumberHR1
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerCommunications & Power Industries Llc Dba Cpi Div Microwave Power Products Division - Eimac Operations
StatusCANCELLED
Overall Diameter0.500 INCHES NOMINAL IN
Mounting MethodUNTHREADED HOLE(S)
MaterialALUMINUM BODY AND CONTACT
Unthreaded Mounting Hole Diameter0.550 INCHES NOMINAL IN
Mounting Facility Quantity1
Terminal Type and Quantity1 SCREW AXIALLY AT ONE END
Overall Diameter0.500 INCHES NOMINAL IN
Mounting MethodUNTHREADED HOLE(S)
MaterialALUMINUM BODY AND CONTACT
Unthreaded Mounting Hole Diameter0.550 INCHES NOMINAL IN
Mounting Facility Quantity1
Terminal Type and Quantity1 SCREW AXIALLY AT ONE END
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
5945-00-258-28281116775 INTERCHANGEABLE
Relay,electromagnetic
General Motors Llc Dba General Motors Llc
5930-00-272-1412 INTERCHANGEABLE
Housing,sensitive Switch
5950-00-468-19699-1015-7 INTERCHANGEABLE
Coil,electrical
Eaton Corp Opns & Technical Center
3110-00-555-4381999999K006 INTERCHANGEABLE
Cam Follower,needle Bearing
Naval Ship Systems Command
5930-01-082-7800C8409-2 INTERCHANGEABLE
Switch Assembly
Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company
3426-01-264-2626 INTERCHANGEABLE
Anode,plating
5340-01-281-11466289752 INTERCHANGEABLE
Catch,clamping
Cadillac Gage Textron Inc.
6685-01-534-8882HR1 INTERCHANGEABLE
Control,humidity
Dale Cleaning Service
6685-01-553-1456HR1 INTERCHANGEABLE
Humidity Element,hair
Regin Hvac Products, Inc.
Cross-Reference Index
Part NumberManufacturer
910157 Us Army Aviation and Missile Command (USA)
HR1 PRIMARY Communications & Power Industries Llc Dba Cpi Div Microwave Power Products Division - Eimac Operations (USA)
Related Parts
5945-00-258-2828INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
1116775
5930-00-272-1412INTERCHANGEABLE
HOUSING,SENSITIVE SWITCH
5950-00-468-1969INTERCHANGEABLE
COIL,ELECTRICAL
9-1015-7
3110-00-555-4381INTERCHANGEABLE
CAM FOLLOWER,NEEDLE BEARING
999999K006
5930-01-082-7800INTERCHANGEABLE
SWITCH ASSEMBLY
C8409-2
3426-01-264-2626INTERCHANGEABLE
ANODE,PLATING
5340-01-281-1146INTERCHANGEABLE
CATCH,CLAMPING
6289752
6685-01-534-8882INTERCHANGEABLE
CONTROL,HUMIDITY
HR1
6685-01-553-1456INTERCHANGEABLE
HUMIDITY ELEMENT,HAIR
HR1

Frequently Asked Questions

What is NSN 5999-00-534-7823?

NSN 5999-00-534-7823 is a Contact,electrical, manufactured by Communications & Power Industries Llc Dba Cpi Div Microwave Power Products Division - Eimac Operations, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-00-534-7823?

NSN 5999-00-534-7823 has 2 cross-referenced part numbers: 910157 (Us Army Aviation and Missile Command), HR1 (Communications & Power Industries Llc Dba Cpi Div Microwave Power Products Division - Eimac Operations).

What NSN replaces 5999-00-534-7823?

There are 9 known substitutes for 5999-00-534-7823: 5945-00-258-2828, 5930-00-272-1412, 5950-00-468-1969 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of HR1?

Key specifications for HR1: Overall Diameter: 0.500 INCHES NOMINAL IN; Mounting Method: UNTHREADED HOLE(S); Material: ALUMINUM BODY AND CONTACT; Unthreaded Mounting Hole Diameter: 0.550 INCHES NOMINAL IN. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-00-534-7823 still in active supply?

NSN 5999-00-534-7823 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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