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21370-1057 — LAMPHOLDER

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

21370-1057: LAMPHOLDER.

The LAMPHOLDER is a the manufacturer industrial component. Key specifications include material: CERAMIC BODY, terminal_type: SCREW, overall_height: 1.390 INCHES NOMINAL IN, mounting_method: THREADED BUSHING LOCATION NOT OTHERWISE SPECIFIED, outside_diameter: 1.750 INCHES NOMINAL IN, style_designator: RING. This part is cataloged in the U.S.

Government catalog under NSN 6250-00-196-8917, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
21370-1057
NSN: 6250-00-196-8917
FSC: 6250 — Ballasts, Lampholders, and Starters
CAGE: 63277 — THE VOLLRATH COMPANY, L.L.C. DIV VOLLRATH (USA)
SPECIFICATIONS
materialCERAMIC BODY
terminal_typeSCREW
overall_height1.390 INCHES NOMINAL IN
mounting_methodTHREADED BUSHING LOCATION NOT OTHERWISE SPECIFIED
outside_diameter1.750 INCHES NOMINAL IN
style_designatorRING
voltage_in_volts250.0
terminal_quantity2
mounting_feature_typeSURFACE
wattage_rating_in_watts660.0
mounting_device_quantity1
lamp_base_type_accommodatedMEDIUM SCREW
NSN6250-00-196-8917
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available LAMPHOLDER TITLE COMPONENT PN 21370-1057 MFR LAMPHOLDER
KEY FEATURES
•
TERMINAL QUANTITY: 2
•
TERMINAL TYPE: SCREW
•
WATTAGE RATING IN WATTS: 660.0
•
MOUNTING METHOD: THREADED BUSHING LOCATION NOT OTHERWISE SPECIFIED
•
STYLE DESIGNATOR: RING
•
VOLTAGE IN VOLTS: 250.0
•
OUTSIDE DIAMETER: 1.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.390 INCHES NOMINAL IN
TERMINAL QUANTITY2
TERMINAL TYPESCREW
WATTAGE RATING IN WATTS660.0
MOUNTING METHODTHREADED BUSHING LOCATION NOT OTHERWISE SPECIFIED
STYLE DESIGNATORRING
VOLTAGE IN VOLTS250.0
OUTSIDE DIAMETER1.750 INCHES NOMINAL IN
LAMP BASE TYPE ACCOMMODATEDMEDIUM SCREW
MOUNTING DEVICE QUANTITY1
SUBSTITUTES & CROSS-REFERENCES 9
2139Reference document
Same NSN cross-reference
Reference document — Secondary reference
8898502Reference document
Same NSN cross-reference
Reference document — Secondary reference
WL142 TYPE VII-2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
WL142TYPE7-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
21370-1058Reference document
Same NSN cross-reference
Reference document — Secondary reference
9350Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21370-1057?
21370-1057 is a LAMPHOLDER.
What parts can replace 21370-1057?
There are 9 known substitutes for 21370-1057: 2139, 8898502, WL142 TYPE VII-2 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21370-1057?
21370-1057 is cataloged in the U.S. Government catalog under NSN 6250-00-196-8917. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.