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556883 — ABSORBER,OVERVOLTAGE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

556883: ABSORBER,OVERVOLTAGE.

The ABSORBER,OVERVOLTAGE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 410, body_style: PLAIN, SOLID, bore_style: PLAIN BOTH ENDS, teeth_type: STRAIGHT, pitch_angle: 29.3500 DEGREES, pitch_diameter: 2.3730 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 2520-00-423-1778, 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
556883
NSN: 2520-00-423-1778
FSC: 2520 — Vehicular Power Transmission Components
CAGE: 22852 — SPALLA INC (USA)
SPECIFICATIONS
materialSTEEL COMP 410
body_stylePLAIN, SOLID
bore_stylePLAIN BOTH ENDS
teeth_typeSTRAIGHT
pitch_angle29.3500 DEGREES
pitch_diameter2.3730 INCHES NOMINAL IN
pressure_angle22.5000 DEGREES
teeth_quantity9
hardness_rating25.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
inside_diameter1.360 INCHES NOMINAL IN
outside_diameter1.550 INCHES MINIMUM AND 1.554 INCHES MAXIMUM IN
special_features0.062 IN. BY 45 DEG CHAMFER BOTH ENDS OF BORE IN
NSN2520-00-423-1778
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available ABSORBER,OVERVOLTAGE TITLE COMPONENT PN 556883 MFR ABSORBER,OVERVOLTAGE
SUBSTITUTES & CROSS-REFERENCES 8
2174WReference document
Same NSN cross-reference
Reference document — Secondary reference
630369Reference document
Same NSN cross-reference
Reference document — Secondary reference
T8-35Reference document
Same NSN cross-reference
Reference document — Secondary reference
7347910Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LT228-35Reference document
Same NSN cross-reference
Reference document — Secondary reference
K157-12Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 556883?
556883 is a ABSORBER,OVERVOLTAGE.
What parts can replace 556883?
There are 8 known substitutes for 556883: 2174W, 630369, T8-35 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 556883?
556883 is cataloged in the U.S. Government catalog under NSN 2520-00-423-1778. 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.