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166543-1 — CIRCUIT CARD ASSEMBLY

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

166543-1: CIRCUIT CARD ASSEMBLY.

The CIRCUIT CARD ASSEMBLY is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 642 OVERALL, flange_width: 0.1550 INCHES MINIMUM AND 0.2050 INCHES MAXIMUM IN, overall_length: 0.2050 INCHES MINIMUM AND 0.2150 INCHES MAXIMUM IN, style_designator: SOLID, EXTERNAL FLANGE ONE END, body_inside_diameter: 0.2485 INCHES MINIMUM AND 0.2505 INCHES MAXIMUM IN, body_outside_diameter: 0.4100 INCHES MINIMUM AND 0.4300 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-232-0694, 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
166543-1
NSN: 3120-00-232-0694
NIINs: 002320694, 010429308
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 70210 — HONEYWELL INTERNATIONAL INC. DIV AEROSPACE - TORRANCE (USA)
SPECIFICATIONS
materialCOPPER ALLOY 642 OVERALL
flange_width0.1550 INCHES MINIMUM AND 0.2050 INCHES MAXIMUM IN
overall_length0.2050 INCHES MINIMUM AND 0.2150 INCHES MAXIMUM IN
style_designatorSOLID, EXTERNAL FLANGE ONE END
body_inside_diameter0.2485 INCHES MINIMUM AND 0.2505 INCHES MAXIMUM IN
body_outside_diameter0.4100 INCHES MINIMUM AND 0.4300 INCHES MAXIMUM IN
end_item_identificationCIRCUIT CARD ASSEMBLY
flange_outside_diameter0.6800 INCHES MINIMUM AND 0.7000 INCHES MAXIMUM IN
material_document_and_classificationQQ-C-465 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN3120-00-232-0694
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 166543-1 · 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
KEY FEATURES
•
FLANGE OUTSIDE DIAMETER: 0.6800 INCHES MINIMUM AND 0.7000 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 0.4100 INCHES MINIMUM AND 0.4300 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SOLID, EXTERNAL FLANGE ONE END
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-465 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
BODY INSIDE DIAMETER: 0.2485 INCHES MINIMUM AND 0.2505 INCHES MAXIMUM IN
•
FLANGE WIDTH: 0.1550 INCHES MINIMUM AND 0.2050 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY 642 OVERALL
TECHNICAL CHARACTERISTICS
FLANGE OUTSIDE DIAMETER0.6800 INCHES MINIMUM AND 0.7000 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER0.4100 INCHES MINIMUM AND 0.4300 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, EXTERNAL FLANGE ONE END
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-465 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH0.2050 INCHES MINIMUM AND 0.2150 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.2485 INCHES MINIMUM AND 0.2505 INCHES MAXIMUM IN
FLANGE WIDTH0.1550 INCHES MINIMUM AND 0.2050 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY 642 OVERALL
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 166543-1?
166543-1 is a CIRCUIT CARD ASSEMBLY.
What is the NSN for 166543-1?
166543-1 is cataloged in the U.S. Government catalog under NSN 3120-00-232-0694. 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.