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66-24-90 — CRYSTAL UNIT,QUARTZ

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

66-24-90: CRYSTAL UNIT,QUARTZ.

The CRYSTAL UNIT,QUARTZ is a the manufacturer industrial component. Key specifications include diameter: 0.335 INCHES MAXIMUM IN, material: STEEL CORROSION RESISTING OVERALL, corner_shape: SQUARE ALL CORNERS, overall_length: 0.265 INCHES MAXIMUM IN, hardness_rating: 53.0 ROCKWELL C NOMINAL OVERALL, terminal_length: 0.500 INCHES MINIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-489-1940, 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
66-24-90
NSN: 3120-00-489-1940
NIINs: 004891940, 011075268
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
diameter0.335 INCHES MAXIMUM IN
materialSTEEL CORROSION RESISTING OVERALL
corner_shapeSQUARE ALL CORNERS
overall_length0.265 INCHES MAXIMUM IN
hardness_rating53.0 ROCKWELL C NOMINAL OVERALL
terminal_length0.500 INCHES MINIMUM IN
overall_diameter0.410 INCHES MAXIMUM IN
special_featuresQUARTZ CRYSTAL SHALL POSSESS A 45 DEGREE POLARIZATION KEY
style_designatorHAT TYPE, 3 WIRE LEADS
circuit_resonanceSERIES RESONANCE
terminal_diameter0.016 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN
drive_level_rating2.0 MILLIWATTS MAXIMUM
NSN3120-00-489-1940
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 66-24-90 · 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
•
CORNER SHAPE: SQUARE ALL CORNERS
•
BODY OUTSIDE DIAMETER: 0.2655 INCHES MINIMUM AND 0.2665 INCHES MAXIMUM IN
•
HARDNESS RATING: 53.0 ROCKWELL C NOMINAL OVERALL
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
BODY INSIDE DIAMETER: 0.2010 INCHES MINIMUM AND 0.2030 INCHES MAXIMUM IN
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
BODY OUTSIDE DIAMETER0.2655 INCHES MINIMUM AND 0.2665 INCHES MAXIMUM IN
HARDNESS RATING53.0 ROCKWELL C NOMINAL OVERALL
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
OVERALL LENGTH0.2500 INCHES MINIMUM AND 0.2600 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.2010 INCHES MINIMUM AND 0.2030 INCHES MAXIMUM IN
MATERIALSTEEL CORROSION RESISTING OVERALL
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is 66-24-90?
66-24-90 is a CRYSTAL UNIT,QUARTZ.
What is the NSN for 66-24-90?
66-24-90 is cataloged in the U.S. Government catalog under NSN 3120-00-489-1940. This indicates validated use in U.S. government and defense supply chains.
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