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56321 — CIRCUIT CARD ASSEMBLY

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

56321: CIRCUIT CARD ASSEMBLY.

The CIRCUIT CARD ASSEMBLY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 416 OVERALL, body_style: PLAIN, SOLID, tooth_form: STANDARD, handle_type: STRAIGHT, pitch_diameter: 0.4370 INCHES NOMINAL IN, pressure_angle: 14.5000 DEGREES. This part is cataloged in the U.S.

Government catalog under NSN 3130-00-389-7442, 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
56321
NSN: 3130-00-389-7442
NIINs: 003897442, 004319294, 012683104, 013970815, 014219861, 014377869
FSC: 3130 — Bearings, Mounted
CAGE: 31974 — HOFFMAN/NEW YORKER, INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 416 OVERALL
body_stylePLAIN, SOLID
tooth_formSTANDARD
handle_typeSTRAIGHT
key_quantity9
pitch_diameter0.4370 INCHES NOMINAL IN
pressure_angle14.5000 DEGREES
teeth_quantity21
special_featuresMETAL HANDLE; 3-3/8 IN. HANDLE LG IN
style_designatorPROTRUDING HUB
features_providedFOLD-UP TYPE
surface_treatmentPASSIVATE OVERALL
NSN3130-00-389-7442
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 56321 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 56321?
56321 is a CIRCUIT CARD ASSEMBLY.
What is the NSN for 56321?
56321 is cataloged in the U.S. Government catalog under NSN 3130-00-389-7442. 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.