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2128912 — CIRCUIT CARD ASSEMBLY

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

2128912: CIRCUIT CARD ASSEMBLY.

The CIRCUIT CARD ASSEMBLY is a the manufacturer industrial component. Key specifications include material: STEEL, bore_type: STRAIGHT, face_width: 0.531 INCHES NOMINAL IN, bore_length: 0.781 INCHES NOMINAL IN, design_form: PLAIN, tooth_pitch: 0.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3020-00-845-0772, 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
2128912
NSN: 3020-00-845-0772
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 12204 — CHRYSLER REALTY COMPANY LLC DBA DAIMLER CHRYSLER (USA)
SPECIFICATIONS
materialSTEEL
quantity1
bore_typeSTRAIGHT
face_width0.531 INCHES NOMINAL IN
bore_length0.781 INCHES NOMINAL IN
design_formPLAIN
tooth_pitch0.500 INCHES NOMINAL IN
keyway_width0.188 INCHES NOMINAL IN
bore_diameter1.562 INCHES NOMINAL IN
overall_length0.781 INCHES NOMINAL IN
pitch_diameter2.688 INCHES NOMINAL IN
furnished_itemsKEYING FACILITY
NSN3020-00-845-0772
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CIRCUIT CARD ASSEMBLY TITLE COMPONENT PN 2128912 MFR CIRCUIT CARD ASSEMBLY
KEY FEATURES
•
HUB OUTSIDE DIAMETER: 2.125 INCHES NOMINAL AA END IN
•
SECURING METHOD: ANY ACCEPTABLE
•
BORE LENGTH: 0.781 INCHES NOMINAL IN
•
DESIGN FORM: PLAIN
•
TOOTH PITCH: 0.500 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 2.969 INCHES NOMINAL IN
•
KEYING FACILITY TYPE: KEYWAY
•
QUANTITY: 1
TECHNICAL CHARACTERISTICS
HUB OUTSIDE DIAMETER2.125 INCHES NOMINAL AA END IN
SECURING METHODANY ACCEPTABLE
BORE LENGTH0.781 INCHES NOMINAL IN
DESIGN FORMPLAIN
TOOTH PITCH0.500 INCHES NOMINAL IN
OUTSIDE DIAMETER2.969 INCHES NOMINAL IN
KEYING FACILITY TYPEKEYWAY
QUANTITY1
STYLE DESIGNATORPLAIN
PITCH DIAMETER2.688 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 2
17296Reference document
Same NSN cross-reference
Reference document — Secondary reference
SS291Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2128912?
2128912 is a CIRCUIT CARD ASSEMBLY.
What parts can replace 2128912?
There are 2 known substitutes for 2128912: 17296, SS291. Substitute compatibility should be verified for your specific system.
What is the NSN for 2128912?
2128912 is cataloged in the U.S. Government catalog under NSN 3020-00-845-0772. 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.