PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20B10/4M/SSLamp,incandescent

Gte Products Corp Sylvania Miniature Lighting Div · NSN 6240-01-344-5444 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-01-344-5444 — this item is cataloged by the U.S. Government under National Stock Number 6240-01-344-5444. Primary manufacturer part number: 20B10/4M/SS.
Features
  • Lamp,incandescent — FSC 6240
  • Filament Heavy Duty Service Rating: NOT RATED
  • Light Output Rating: 160.000 LUMENS NOMINAL SINGLE RATING
  • Filament Designation: C,C-7A A
  • Base Style: MEDIUM SCREW SKIRTED
  • Emitted Light Characteristic: COLORLESS
  • Average Life Rating in Hours: 4000.0
  • Current Rating for Which Designed: 0.167 AMPERES NOMINAL
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,incandescent, cataloged under National Stock Number 6240-01-344-5444, is classified within Federal Supply Class 6240 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Gte Products Corp Sylvania Miniature Lighting Div. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6240-01-344-5444
Primary Part Number20B10/4M/SS
Item NameLamp,incandescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerGte Products Corp Sylvania Miniature Lighting Div
StatusACTIVE
Filament Heavy Duty Service RatingNOT RATED
Light Output Rating160.000 LUMENS NOMINAL SINGLE RATING
Filament DesignationC,C-7A A
Base StyleMEDIUM SCREW SKIRTED
Emitted Light CharacteristicCOLORLESS
Average Life Rating in Hours4000.0
Current Rating for Which Designed0.167 AMPERES NOMINAL
Bulb StyleF (FLAME)
Rated Average LifeHOURS
Wattage Rating20.000 WATTS
Criticality Code JustificationFEAT
Bulb Light Transmission CharacteristicTRANSPARENT
Bulb DesignatorC-11
Voltage Rating120.000 VOLTS NOMINAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
6350-00-039-567513530 INTERCHANGEABLE
Seat,spring
Leslie Controls, Inc. Dba Leslie Controls Inc
1660-00-180-371613530 INTERCHANGEABLE
Arm,rocker,regulator
Honeywell International, Inc Div Aerospace-Tucson
3455-00-278-119113530 INTERCHANGEABLE
Cutter,milling,convex
Niagara Cutter Inc
2030-00-390-3894S32 INTERCHANGEABLE
Control Assy,pump
Lidgerwood Manufacturing Company Dba Lidgerwood Manufacturing Co Div Lidgerwood Manufacuring Co
5998-01-073-159513530 INTERCHANGEABLE
Circuit Card Assembly
Giga-Tronics Incorporated Dba Giga-Tronics
5950-01-396-485013530 INTERCHANGEABLE
Transformer,power
Standex Electronics, Inc.
Cross-Reference Index
Part NumberManufacturer
13530 Gte Products Corp Sylvania Miniature Lighting Div (USA)
20B10/4M/SS PRIMARY Gte Products Corp Sylvania Miniature Lighting Div (USA)
20C11/4M/SS/120V Gte Products Corp Sylvania Miniature Lighting Div (USA)
Related Parts
6350-00-039-5675INTERCHANGEABLE
SEAT,SPRING
13530
1660-00-180-3716INTERCHANGEABLE
ARM,ROCKER,REGULATOR
13530
3455-00-278-1191INTERCHANGEABLE
CUTTER,MILLING,CONVEX
13530
2030-00-390-3894INTERCHANGEABLE
CONTROL ASSY,PUMP
S32
5998-01-073-1595INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
13530
5950-01-396-4850INTERCHANGEABLE
TRANSFORMER,POWER
13530

Frequently Asked Questions

What is NSN 6240-01-344-5444?

NSN 6240-01-344-5444 is a Lamp,incandescent, manufactured by Gte Products Corp Sylvania Miniature Lighting Div, classified under FSC 6240 (No Item Name Available). Status: active.

What are the part numbers for NSN 6240-01-344-5444?

NSN 6240-01-344-5444 has 3 cross-referenced part numbers: 13530 (Gte Products Corp Sylvania Miniature Lighting Div), 20B10/4M/SS (Gte Products Corp Sylvania Miniature Lighting Div), 20C11/4M/SS/120V (Gte Products Corp Sylvania Miniature Lighting Div).

What NSN replaces 6240-01-344-5444?

There are 6 known substitutes for 6240-01-344-5444: 6350-00-039-5675, 1660-00-180-3716, 3455-00-278-1191 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20B10/4M/SS?

Key specifications for 20B10/4M/SS: Overall Length: 4.000 INCHES NOMINAL IN; Filament Heavy Duty Service Rating: NOT RATED; Light Output Rating: 160.000 LUMENS NOMINAL SINGLE RATING; Filament Designation: C,C-7A A. 16 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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