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A17990 — GEAR KIT

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

A17990: GEAR KIT.

The GEAR KIT is a the manufacturer industrial component. Key specifications include diameter: 0.9809 INCHES MINIMUM AND 0.9990 INCHES MAXIMUM IN, material: STEEL COMP 303 OR STEEL COMP 303SE OVERALL, corner_shape: SQUARE ALL CORNERS, outside_diameter: 1.1780 INCHES MINIMUM AND 1.1880 INCHES MAXIMUM IN, style_designator: ROUND, overall_thickness: 0.0320 INCHES MINIMUM AND 0.0400 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-808-4053, 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
A17990
NSN: 3120-00-808-4053
NIINs: 008084053, 011330310
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 0SYN4 — WARTSILA LIPS INC (USA)
SPECIFICATIONS
diameter0.9809 INCHES MINIMUM AND 0.9990 INCHES MAXIMUM IN
materialSTEEL COMP 303 OR STEEL COMP 303SE OVERALL
corner_shapeSQUARE ALL CORNERS
outside_diameter1.1780 INCHES MINIMUM AND 1.1880 INCHES MAXIMUM IN
style_designatorROUND
overall_thickness0.0320 INCHES MINIMUM AND 0.0400 INCHES MAXIMUM IN
surface_conditionGROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN3120-00-808-4053
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: A17990 · 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
•
OVERALL THICKNESS: 0.0320 INCHES MINIMUM AND 0.0400 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: ROUND
•
DIAMETER: 0.9809 INCHES MINIMUM AND 0.9990 INCHES MAXIMUM IN
•
SURFACE CONDITION: GROUND
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OUTSIDE DIAMETER: 1.1780 INCHES MINIMUM AND 1.1880 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 303 OR STEEL COMP 303SE OVERALL
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
OVERALL THICKNESS0.0320 INCHES MINIMUM AND 0.0400 INCHES MAXIMUM IN
STYLE DESIGNATORROUND
DIAMETER0.9809 INCHES MINIMUM AND 0.9990 INCHES MAXIMUM IN
SURFACE CONDITIONGROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OUTSIDE DIAMETER1.1780 INCHES MINIMUM AND 1.1880 INCHES MAXIMUM IN
MATERIALSTEEL COMP 303 OR STEEL COMP 303SE OVERALL
CENTER HOLE SHAPE STYLEROUND
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 A17990?
A17990 is a GEAR KIT.
What is the NSN for A17990?
A17990 is cataloged in the U.S. Government catalog under NSN 3120-00-808-4053. This indicates validated use in U.S. government and defense supply chains.
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