PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

421Adapter,lampholder

Bryant Electric · NSN 6250-00-635-3665 · FSC 6250 · No Item Name Available
Verified by PartsTable
NSN 6250-00-635-3665 — this item is cataloged by the U.S. Government under National Stock Number 6250-00-635-3665. Primary manufacturer part number: 421.
Features
  • Adapter,lampholder — FSC 6250
  • Maximum Wattage Rating in Watts: 660.0
  • Maximum Current Rating: 10.000 AMPERES
  • Maximum Voltage Rating in Volts: 250.0
  • Lamp Accommodation Quantity: 1
  • Lamp Base Style Accommodated: MEDIUM SCREW
  • Lamp Base Style: MOGUL SCREW
  • 8 verified cross-references
Applications
  • Facility lighting installation
  • Emergency and exit lighting
  • Runway and airfield lighting
General Description

The Adapter,lampholder, cataloged under National Stock Number 6250-00-635-3665, is classified within Federal Supply Class 6250 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Bryant Electric. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6250-00-635-3665
Primary Part Number421
Item NameAdapter,lampholder
FSC / FSG6250 / 62 — No Item Name Available
ManufacturerBryant Electric
StatusCANCELLED
Maximum Wattage Rating in Watts660.0
Maximum Current Rating10.000 AMPERES
Maximum Voltage Rating in Volts250.0
Lamp Accommodation Quantity1
Lamp Base Style AccommodatedMEDIUM SCREW
Lamp Base StyleMOGUL SCREW
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6250-00-153-6452 INTERCHANGEABLE
Lampholder
6250-00-153-6454 INTERCHANGEABLE
Lampholder
6250-00-153-6461UL496 FIG. SB8 INTERCHANGEABLE
Lampholder
Underwriters Laboratories Inc
6250-00-231-9861 INTERCHANGEABLE
Lampholder
6250-00-255-4215M970/9-1 INTERCHANGEABLE
Lampholder
Underwriters Laboratories Inc
6250-00-270-4240 INTERCHANGEABLE
Lampholder
6250-00-284-0481M970/11-1 INTERCHANGEABLE
Lampholder
Underwriters Laboratories Inc
6250-00-295-2738UL-496 FIG SB14 INTERCHANGEABLE
Socket,lamp Starter
Underwriters Laboratories Inc
6250-00-295-2852M970/2-1 INTERCHANGEABLE
Lampholder
Underwriters Laboratories Inc
6250-00-299-6327 INTERCHANGEABLE
Lampholder
Cross-Reference Index
Part NumberManufacturer
421 Bryant Electric (USA)
UL 496 Underwriters Laboratories Inc (USA)
421 Morse, F W & Company (USA)
W-L-142 TY11 General Services Administration Federal Supply Service (USA)
421 Westinghouse Electric Corp (USA)
W-L-142 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
GE070 General Electric Co Lamp Division of Consumer Products Group (USA)
GE070 General Electric Company (USA)
Related Parts
6250-00-153-6452INTERCHANGEABLE
LAMPHOLDER
6250-00-153-6454INTERCHANGEABLE
LAMPHOLDER
6250-00-153-6461INTERCHANGEABLE
LAMPHOLDER
UL496 FIG. SB8
6250-00-231-9861INTERCHANGEABLE
LAMPHOLDER
6250-00-255-4215INTERCHANGEABLE
LAMPHOLDER
M970/9-1
6250-00-270-4240INTERCHANGEABLE
LAMPHOLDER
6250-00-284-0481INTERCHANGEABLE
LAMPHOLDER
M970/11-1
6250-00-295-2738INTERCHANGEABLE
SOCKET,LAMP STARTER
UL-496 FIG SB14
6250-00-295-2852INTERCHANGEABLE
LAMPHOLDER
M970/2-1
6250-00-299-6327INTERCHANGEABLE
LAMPHOLDER
6250-00-299-6982INTERCHANGEABLE
LAMPHOLDER
GE3327
6250-00-377-8590INTERCHANGEABLE
LAMPHOLDER
UL496 FIG. SB11

Frequently Asked Questions

What is NSN 6250-00-635-3665?

NSN 6250-00-635-3665 is a Adapter,lampholder, manufactured by Bryant Electric, classified under FSC 6250 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6250-00-635-3665?

NSN 6250-00-635-3665 has 8 cross-referenced part numbers: 421 (Bryant Electric), UL 496 (Underwriters Laboratories Inc), 421 (Morse, F W & Company), W-L-142 TY11 (General Services Administration Federal Supply Service), 421 (Westinghouse Electric Corp) and 3 more.

What NSN replaces 6250-00-635-3665?

There are 12 known substitutes for 6250-00-635-3665: 6250-00-153-6452, 6250-00-153-6454, 6250-00-153-6461 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 421?

Key specifications for 421: Maximum Wattage Rating in Watts: 660.0; Maximum Current Rating: 10.000 AMPERES; Maximum Voltage Rating in Volts: 250.0; Lamp Accommodation Quantity: 1. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6250-00-635-3665 still in active supply?

NSN 6250-00-635-3665 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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