PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

634Lamp,incandescent

Pacific Terminations Inc · NSN 6240-00-881-9624 · FSC 6240 · No Item Name Available
Verified by PartsTable
NSN 6240-00-881-9624 — this item is cataloged by the U.S. Government under National Stock Number 6240-00-881-9624. Primary manufacturer part number: 634.
Features
  • Lamp,incandescent — FSC 6240
  • Bulb Designator: T-1 1/4
  • Average Life Rating in Hours: 1000.0
  • Light Output Rating: 0.630 SPHERICAL CANDLEPOWER NOMINAL SINGLE RATING
  • Wattage Rating: 0.120 WATTS
  • Voltage Rating: 6.000 VOLTS NOMINAL
  • Base Style: WIRE LEADS, DOWN
  • Light Center Length: 0.120 INCHES NOMINAL IN
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Lamp,incandescent, cataloged under National Stock Number 6240-00-881-9624, is classified within Federal Supply Class 6240 (No Item Name Available) of the Lighting Fixtures and Lamps group. The primary manufacturer of record is Pacific Terminations Inc. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 commercial cross-references from 15 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
NSN6240-00-881-9624
Primary Part Number634
Item NameLamp,incandescent
FSC / FSG6240 / 62 — No Item Name Available
ManufacturerPacific Terminations Inc
StatusACTIVE
Bulb DesignatorT-1 1/4
Average Life Rating in Hours1000.0
Light Output Rating0.630 SPHERICAL CANDLEPOWER NOMINAL SINGLE RATING
Wattage Rating0.120 WATTS
Voltage Rating6.000 VOLTS NOMINAL
Base StyleWIRE LEADS, DOWN
Light Center Length0.120 INCHES NOMINAL IN
Bulb StyleT (TUBULAR)
Bulb Light Transmission CharacteristicTRANSPARENT
Rated Average LifeHOURS
Current Rating for Which Designed0.200 AMPERES NOMINAL
Filament DesignationC-2R
Emitted Light CharacteristicWHITE
Wire Lead Length0.500 INCHES NOMINAL IN
Filament Heavy Duty Service RatingNOT RATED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6625-00-070-4530634-15639 INTERCHANGEABLE
Ammeter
Phaostron Instrument and Electronic Company
3110-00-070-5462 INTERCHANGEABLE
Retainer,ballbearin
5930-00-132-8275634 INTERCHANGEABLE
Switch,push
Edwards Signaling and Security Systems a Part of Ge Security
4730-00-222-1798AS5183D1212 INTERCHANGEABLE
Adapter,straight,pipe to Hose
Sae International Dba Sae International
8345-00-263-2523 INTERCHANGEABLE
Flag,national
8345-00-264-2633 INTERCHANGEABLE
Flag,national
5330-00-339-2437634BRZ INTERCHANGEABLE
Retainer,packing
Carver Pump Company
3040-00-358-1563H114-10 INTERCHANGEABLE
Plate,retaining,shaft
Dresser Industries Inc Leroi Div
5940-00-459-8727371-205-010 INTERCHANGEABLE
Terminal,lug
L3harris Interstate Electronics Corporation
5945-00-631-74486-34 INTERCHANGEABLE
Contact Set,relay
Eaton Corporation
Cross-Reference Index
Part NumberManufacturer
634 PRIMARY Pacific Terminations Inc (USA)
128C271H01 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
634 PRIMARY Industrial Electronic Engineers, Inc. (USA)
PL634 Precision Lamp Inc (USA)
634 Lamp Industry for Use with Industry Designations and Abbreviations for Lamps
628 PRIMARY Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch (USA)
CM634 Satair A/s (DNK)
CM8-634 Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron (USA)
990156-5 Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA)
170-004-0005 Moog Inc. Dba Moog Components Group (USA)
CM634 Micro Display Devices Ltd (GBR)
CM634 PRIMARY Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron (USA)
170-004-0005 Moog Inc. (USA)
LTX634 Lamptronix Co Ltd (USA)
21005166 Sypris Electronics, Llc Div Sypris Electronics, Llc - Colorado Field Services (USA)
GL808CL Plasta-Flex Inc (USA)
Related Parts
6625-00-070-4530INTERCHANGEABLE
AMMETER
634-15639
3110-00-070-5462INTERCHANGEABLE
RETAINER,BALLBEARIN
5930-00-132-8275INTERCHANGEABLE
SWITCH,PUSH
634
4730-00-222-1798INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO HOSE
AS5183D1212
8345-00-263-2523INTERCHANGEABLE
FLAG,NATIONAL
8345-00-264-2633INTERCHANGEABLE
FLAG,NATIONAL
5330-00-339-2437INTERCHANGEABLE
RETAINER,PACKING
634BRZ
3040-00-358-1563INTERCHANGEABLE
PLATE,RETAINING,SHAFT
H114-10
5940-00-459-8727INTERCHANGEABLE
TERMINAL,LUG
371-205-010
5945-00-631-7448INTERCHANGEABLE
CONTACT SET,RELAY
6-34
6510-00-782-2698INTERCHANGEABLE
SPONGE,SURGICAL
PRM21408CZ
5305-00-789-0694INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
12051

Frequently Asked Questions

What is NSN 6240-00-881-9624?

NSN 6240-00-881-9624 is a Lamp,incandescent, manufactured by Pacific Terminations Inc, classified under FSC 6240 (No Item Name Available). Status: active.

What are the part numbers for NSN 6240-00-881-9624?

NSN 6240-00-881-9624 has 16 cross-referenced part numbers: 634 (Pacific Terminations Inc), 128C271H01 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 634 (Industrial Electronic Engineers, Inc.), PL634 (Precision Lamp Inc), 634 (Lamp Industry for Use with Industry Designations and Abbreviations for Lamps) and 11 more.

What NSN replaces 6240-00-881-9624?

There are 12 known substitutes for 6240-00-881-9624: 6625-00-070-4530, 3110-00-070-5462, 5930-00-132-8275 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 634?

Key specifications for 634: Bulb Designator: T-1 1/4; Average Life Rating in Hours: 1000.0; Light Output Rating: 0.630 SPHERICAL CANDLEPOWER NOMINAL SINGLE RATING; Wattage Rating: 0.120 WATTS. 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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