PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

74-66Ballast,lamp

Day-Ray Products, Inc · NSN 6250-00-818-2321 · FSC 6250 · No Item Name Available
Verified by PartsTable
NSN 6250-00-818-2321 — this item is cataloged by the U.S. Government under National Stock Number 6250-00-818-2321. Primary manufacturer part number: 74-66.
Features
  • Ballast,lamp — FSC 6250
  • Lamp Accommodation Quantity: 1
  • Center to Center Distance Between Mounting Holes Along Length: 2.510 INCHES IN
  • Power Factor Characteristic: HIGH
  • Terminal Location and Quantity: 6 TOP
  • Lamp Wattage Rating in Watts: 13.0
  • Mounting Method: HOLE(S) LOCATION NOT OTHERWISE SPECIFIED
  • Current Rating in Amps: 0.540
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Ballast,lamp, cataloged under National Stock Number 6250-00-818-2321, is classified within Federal Supply Class 6250 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Day-Ray Products, Inc. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6250-00-818-2321
Primary Part Number74-66
Item NameBallast,lamp
FSC / FSG6250 / 62 — No Item Name Available
ManufacturerDay-Ray Products, Inc
StatusACTIVE
Lamp Accommodation Quantity1
Center to Center Distance Between Mounting Holes Along Length2.510 INCHES IN
Power Factor CharacteristicHIGH
Terminal Location and Quantity6 TOP
Lamp Wattage Rating in Watts13.0
Mounting MethodHOLE(S) LOCATION NOT OTHERWISE SPECIFIED
Current Rating in Amps0.540
Current TypeAC
Frequency Rating400.0 HERTZ NOMINAL
Mounting Hole Quantity2
Terminal Quantity6
StarterNOT REQUIRED
Starting CharacteristicRAPID
Terminal TypeBINDING POST
Voltage Rating115.0 VOLTS NOMINAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5935-00-161-96537466 INTERCHANGEABLE
Connector,receptacle,electrical
Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division
5930-00-296-6941 INTERCHANGEABLE
Switch,push
5999-00-613-89156138915 INTERCHANGEABLE
Contact,electrical
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate
2520-00-734-93377466 INTERCHANGEABLE
Shaft Shifting Remo
Eaton Corp Transmission Div
5930-00-969-86397466 INTERCHANGEABLE
Switch,rotary
Shallco, Inc
5905-01-031-02067486R500L 0.25 INTERCHANGEABLE
Resistor,variable,wire Wound,pre
Bi Technologies Corporation Div Bi Technologies Corp.
5995-01-062-427687466-F0450 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Prysmian Group Specialty Cables Llc
5940-01-214-30685023 INTERCHANGEABLE
Terminal,quick Disconnect
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
5360-01-224-15487466 INTERCHANGEABLE
Spring,helical,compression
Ortman Fluid Power Quincy Compressor Div Sub of Coltec Industries Inc
5945-01-466-79122256 INTERCHANGEABLE
Relay,thermal
Better Engineering Manufacturing Inc
Cross-Reference Index
Part NumberManufacturer
617300-5 Lockheed Martin Corp (USA)
74-66 PRIMARY Day-Ray Products, Inc (USA)
BB164 Barwood Electronics Inc (USA)
Related Parts
5935-00-161-9653INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
7466
5930-00-296-6941INTERCHANGEABLE
SWITCH,PUSH
5999-00-613-8915INTERCHANGEABLE
CONTACT,ELECTRICAL
6138915
2520-00-734-9337INTERCHANGEABLE
SHAFT SHIFTING REMO
7466
5930-00-969-8639INTERCHANGEABLE
SWITCH,ROTARY
7466
5905-01-031-0206INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,PRE
7486R500L 0.25
5995-01-062-4276INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
87466-F0450
5940-01-214-3068INTERCHANGEABLE
TERMINAL,QUICK DISCONNECT
5023
5360-01-224-1548INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
7466
5945-01-466-7912INTERCHANGEABLE
RELAY,THERMAL
2256
4310-01-580-3614INTERCHANGEABLE
IMPELLER,VACUUM PUMP
7466
5925-01-641-2073INTERCHANGEABLE
CIRCUIT BREAKER

Frequently Asked Questions

What is NSN 6250-00-818-2321?

NSN 6250-00-818-2321 is a Ballast,lamp, manufactured by Day-Ray Products, Inc, classified under FSC 6250 (No Item Name Available). Status: active.

What are the part numbers for NSN 6250-00-818-2321?

NSN 6250-00-818-2321 has 3 cross-referenced part numbers: 617300-5 (Lockheed Martin Corp), 74-66 (Day-Ray Products, Inc), BB164 (Barwood Electronics Inc).

What NSN replaces 6250-00-818-2321?

There are 12 known substitutes for 6250-00-818-2321: 5935-00-161-9653, 5930-00-296-6941, 5999-00-613-8915 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 74-66?

Key specifications for 74-66: Lamp Accommodation Quantity: 1; Center to Center Distance Between Mounting Holes Along Length: 2.510 INCHES IN; Power Factor Characteristic: HIGH; Terminal Location and Quantity: 6 TOP. 18 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com