PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21-310Contact,electrical

Eaton Corp Opns & Technical Center · NSN 5999-00-636-8174 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-636-8174 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-636-8174. Primary manufacturer part number: 21-310.
Features
  • Contact,electrical — FSC 5999
  • Material: SILVER BODY
  • Voltage Rating in Volts: 550.0 AC
  • Mounting Method: UNTHREADED HOLE(S)
  • Mounting Facility Quantity: 1
  • Unthreaded Mounting Hole Diameter: 0.187 INCHES NOMINAL IN
  • Current Rating in Amps: 18.2
  • Material: SILVER BODY
Applications
  • Applications requiring Silver Body construction
General Description

The Contact,electrical, cataloged under National Stock Number 5999-00-636-8174, 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 Eaton Corp Opns & Technical Center. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-636-8174
Primary Part Number21-310
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerEaton Corp Opns & Technical Center
StatusCANCELLED
MaterialSILVER BODY
Voltage Rating in Volts550.0 AC
Mounting MethodUNTHREADED HOLE(S)
Mounting Facility Quantity1
Unthreaded Mounting Hole Diameter0.187 INCHES NOMINAL IN
Current Rating in Amps18.2
MaterialSILVER BODY
Voltage Rating in Volts550.0 AC
Mounting MethodUNTHREADED HOLE(S)
Mounting Facility Quantity1
Unthreaded Mounting Hole Diameter0.187 INCHES NOMINAL IN
Current Rating in Amps18.2
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueEA
SMR CodeJ
Weight0.0200 lbs
Cube0.0010 cu ft
Verified Substitutes 12
No Item Name Available
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3110-00-156-142421310 INTERCHANGEABLE
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Cross-Reference Index
Part NumberManufacturer
21-310-2 Eaton Corp Opns & Technical Center (USA)
21-310 PRIMARY Eaton Corp Opns & Technical Center (USA)
10646-37 Prosperity a Div of Ametek Inc (USA)
Related Parts
5999-00-422-5454SUCCESSOR
NO ITEM NAME AVAILABLE
6145-00-553-7822SUCCESSOR
CABLE,RADIO FREQUENCY
3110-00-156-1424INTERCHANGEABLE
BEARING,ROLLER,SELF-ALIGNING
21310
2805-00-356-1301INTERCHANGEABLE
BODY,BREATHER VALVE
21310
4720-00-451-2727INTERCHANGEABLE
HOSE,NONMETALLIC
213-10
5945-00-476-1194INTERCHANGEABLE
RELAY
860-204
1005-00-499-4387INTERCHANGEABLE
YOKE ASSEMBLY,BOOSTER
21310
4730-00-537-9301INTERCHANGEABLE
EXPANSION JOINT,PIPE
21310
5331-00-599-2427INTERCHANGEABLE
O-RING
21310
5355-00-914-6533INTERCHANGEABLE
DIAL,SCALE
21310
5935-01-117-5097INTERCHANGEABLE
PLUG,TIP
204RED
4730-01-348-0629INTERCHANGEABLE
REDUCER,HOSE
21310

Frequently Asked Questions

What is NSN 5999-00-636-8174?

NSN 5999-00-636-8174 is a Contact,electrical, manufactured by Eaton Corp Opns & Technical Center, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-00-636-8174?

NSN 5999-00-636-8174 has 3 cross-referenced part numbers: 21-310-2 (Eaton Corp Opns & Technical Center), 21-310 (Eaton Corp Opns & Technical Center), 10646-37 (Prosperity a Div of Ametek Inc).

What NSN replaces 5999-00-636-8174?

There are 12 known substitutes for 5999-00-636-8174: 5999-00-422-5454, 6145-00-553-7822, 3110-00-156-1424 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21-310?

Key specifications for 21-310: Material: SILVER BODY; Voltage Rating in Volts: 550.0 AC; Mounting Method: UNTHREADED HOLE(S); Mounting Facility Quantity: 1. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-00-636-8174 still in active supply?

NSN 5999-00-636-8174 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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