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860321 — SPROCKET WHEEL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

860321: SPROCKET WHEEL.

The SPROCKET WHEEL is a the manufacturer industrial component. Key specifications include bore_type: INVOLUTE SPLINE, design_form: WEBBED, tooth_pitch: 2.640 INCHES NOMINAL IN, spline_length: 2.250 INCHES NOMINAL IN, overall_length: 2.250 INCHES NOMINAL IN, pitch_diameter: 7.720 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3020-00-477-3353, 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
860321
NSN: 3020-00-477-3353
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 61465 — GARWOOD/FELLER INC GARWOOD WINCH DIV (USA)
SPECIFICATIONS
bore_typeINVOLUTE SPLINE
design_formWEBBED
tooth_pitch2.640 INCHES NOMINAL IN
spline_length2.250 INCHES NOMINAL IN
overall_length2.250 INCHES NOMINAL IN
pitch_diameter7.720 INCHES NOMINAL IN
spline_quantity15
teeth_row_quantity1
hub_outside_diameter3.500 INCHES NOMINAL AA END IN
spline_major_diameter2.000 INCHES MINIMUM AND 2.020 INCHES MAXIMUM IN
spline_minor_diameter1.775 INCHES MINIMUM AND 1.778 INCHES MAXIMUM IN
spline_pitch_diameter1.875 INCHES NOMINAL IN
NSN3020-00-477-3353
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPROCKET WHEEL TITLE COMPONENT PN 860321 MFR SPROCKET WHEEL
KEY FEATURES
•
SPLINE MINOR DIAMETER: 1.775 INCHES MINIMUM AND 1.778 INCHES MAXIMUM IN
•
HUB OUTSIDE DIAMETER: 3.500 INCHES NOMINAL AA END IN
•
DESIGN FORM: WEBBED
•
TEETH HARDNESS RATING: 47.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM
•
TOOTH PITCH: 2.640 INCHES NOMINAL IN
•
ASA STANDARD CHAIN NUMBER: A522-1
•
SPLINE LENGTH: 2.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SPLINE MINOR DIAMETER1.775 INCHES MINIMUM AND 1.778 INCHES MAXIMUM IN
HUB OUTSIDE DIAMETER3.500 INCHES NOMINAL AA END IN
HUB OUTSIDE DIAMETER2.500 INCHES NOMINAL BB END IN
DESIGN FORMWEBBED
TEETH HARDNESS RATING47.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM
TOOTH PITCH2.640 INCHES NOMINAL IN
ASA STANDARD CHAIN NUMBERA522-1
SPLINE LENGTH2.250 INCHES NOMINAL IN
PITCH DIAMETER7.720 INCHES NOMINAL IN
OVERALL LENGTH2.250 INCHES NOMINAL IN
OTHER ITEMS IN FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3020-00-000-0091 3020-00-001-0027 3020-00-001-0028 3020-00-001-0063 3020-00-001-0064 3020-00-001-0066 3020-00-001-0071 3020-00-001-0072
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 860321?
860321 is a SPROCKET WHEEL.
What is the NSN for 860321?
860321 is cataloged in the U.S. Government catalog under NSN 3020-00-477-3353. 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.