PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M20703Light,ignition Timing

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 4910-00-255-1449 · FSC 4910 · No Item Name Available
Verified by PartsTable
NSN 4910-00-255-1449 — this item is cataloged by the U.S. Government under National Stock Number 4910-00-255-1449. Primary manufacturer part number: M20703.
Features
  • Light,ignition Timing — FSC 4910
  • Lamp Type Accommodated and Quantity: 2 NEON
  • Shape: RECTANGULAR
  • Wiring Provision Length: 48.0 INCHES NOMINAL ALL PROVISIONS IN
  • Surface Treatment: ENAMEL CASE
  • Voltage Rating in Volts: 3.0 AC MINIMUM AND 4.5 AC MAXIMUM
  • Mounting Base Length: 8.500 INCHES NOMINAL IN
  • Wiring Provision Method: INDIVIDUAL WIRE
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
  • Applications requiring Steel Case construction
General Description

The Light,ignition Timing, cataloged under National Stock Number 4910-00-255-1449, is classified within Federal Supply Class 4910 (No Item Name Available) of the Maintenance and Repair Shop Equipment group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4910-00-255-1449
Primary Part NumberM20703
Item NameLight,ignition Timing
FSC / FSG4910 / 49 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Lamp Type Accommodated and Quantity2 NEON
ShapeRECTANGULAR
Wiring Provision Length48.0 INCHES NOMINAL ALL PROVISIONS IN
Surface TreatmentENAMEL CASE
Voltage Rating in Volts3.0 AC MINIMUM AND 4.5 AC MAXIMUM
Mounting Base Length8.500 INCHES NOMINAL IN
Wiring Provision MethodINDIVIDUAL WIRE
MaterialSTEEL CASE
Light Beam MotionFLASHING
Mounting Base Height4.000 INCHES NOMINAL IN
Lamp Base Type AccommodatedMOGUL SCREW
Mounting Base Width3.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
5940-00-110-29757710-7 INTERCHANGEABLE
Terminal,stud
Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect
3110-00-155-6218319687-308 INTERCHANGEABLE
Bearing,ball,annular
Naval Sea Systems Command
3120-00-425-71587418559 INTERCHANGEABLE
Bearing,sleeve
U S Army Tank Automotive Command Amsta-Im-Mm
6625-00-954-613607710 INTERCHANGEABLE
Voltmeter
Simpson Electric Company, Inc.
3120-01-103-93537710 INTERCHANGEABLE
Sleeve
Crown Coachworks Inc Div Crown Coachworks Auto Body & Paint
5935-01-118-57117-7-10 INTERCHANGEABLE
Connector,plug,electrical
Ted Manufacturing Corp Div Ted Manufacturing Corporation
4240-01-182-986277-10 INTERCHANGEABLE
Plenum Assembly,air Respirator
Hess Manufacturing Inc Div Blast-It-All
5133-01-196-4553 INTERCHANGEABLE
Drill Set,twist
3020-01-202-8653 INTERCHANGEABLE
Sprocket Wheel
6210-01-263-22297710 INTERCHANGEABLE
Light,indicator
Recco Products Inc.
Cross-Reference Index
Part NumberManufacturer
M20703 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-L-20703 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
7710 Hydraulic Technology, Inc (USA)
Related Parts
5940-00-110-2975INTERCHANGEABLE
TERMINAL,STUD
7710-7
3110-00-155-6218INTERCHANGEABLE
BEARING,BALL,ANNULAR
319687-308
3120-00-425-7158INTERCHANGEABLE
BEARING,SLEEVE
7418559
6625-00-954-6136INTERCHANGEABLE
VOLTMETER
07710
3120-01-103-9353INTERCHANGEABLE
SLEEVE
7710
5935-01-118-5711INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
7-7-10
4240-01-182-9862INTERCHANGEABLE
PLENUM ASSEMBLY,AIR RESPIRATOR
77-10
5133-01-196-4553INTERCHANGEABLE
DRILL SET,TWIST
3020-01-202-8653INTERCHANGEABLE
SPROCKET WHEEL
6210-01-263-2229INTERCHANGEABLE
LIGHT,INDICATOR
7710
4730-01-389-6787INTERCHANGEABLE
PLUG,TUBE REPAIR,EXPANDING
7710

Frequently Asked Questions

What is NSN 4910-00-255-1449?

NSN 4910-00-255-1449 is a Light,ignition Timing, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 4910 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4910-00-255-1449?

NSN 4910-00-255-1449 has 3 cross-referenced part numbers: M20703 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-L-20703 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 7710 (Hydraulic Technology, Inc).

What NSN replaces 4910-00-255-1449?

There are 11 known substitutes for 4910-00-255-1449: 5940-00-110-2975, 3110-00-155-6218, 3120-00-425-7158 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M20703?

Key specifications for M20703: Lamp Type Accommodated and Quantity: 2 NEON; Overall Length: 8.500 INCHES NOMINAL IN; Shape: RECTANGULAR; Wiring Provision Length: 48.0 INCHES NOMINAL ALL PROVISIONS IN. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4910-00-255-1449 still in active supply?

NSN 4910-00-255-1449 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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