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640-1370 — SPROCKET WHEEL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

640-1370: SPROCKET WHEEL.

The SPROCKET WHEEL is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1141, bore_type: STRAIGHT, face_width: 2.238 INCHES NOMINAL IN, bore_length: 1.529 INCHES NOMINAL IN, design_form: PLAIN, thread_size: 5/16-24. This part is cataloged in the U.S.

Government catalog under NSN 3020-01-259-8184, 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
640-1370
NSN: 3020-01-259-8184
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 13499 — ROCKWELL COLLINS, INC. DBA COLLINS AEROSPACE GOVERNMENT SYSTEMS DIV COLLINS AEROSPACE - GOVERNMENT SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL COMP 1141
bore_typeSTRAIGHT
face_width2.238 INCHES NOMINAL IN
bore_length1.529 INCHES NOMINAL IN
design_formPLAIN
thread_size5/16-24
tooth_pitch0.750 INCHES NOMINAL IN
bore_diameter3.156 INCHES NOMINAL IN
hole_locationON SPROCKET FACE
overall_length2.363 INCHES NOMINAL IN
pitch_diameter5.984 INCHES NOMINAL IN
furnished_itemsCOUNTERBORE
NSN3020-01-259-8184
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SPROCKET WHEEL TITLE COMPONENT PN 640-1370 MFR SPROCKET WHEEL
KEY FEATURES
•
HUB OUTSIDE DIAMETER: 3.750 INCHES NOMINAL AA END IN
•
SECURING METHOD: THREADED HOLE(S)
•
BORE LENGTH: 1.529 INCHES NOMINAL IN
•
DESIGN FORM: PLAIN
•
TOOTH PITCH: 0.750 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 6.390 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE 1141 ASSN STD SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS
HUB OUTSIDE DIAMETER3.750 INCHES NOMINAL AA END IN
SECURING METHODTHREADED HOLE(S)
BORE LENGTH1.529 INCHES NOMINAL IN
DESIGN FORMPLAIN
TOOTH PITCH0.750 INCHES NOMINAL IN
OUTSIDE DIAMETER6.390 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE 1141 ASSN STD SINGLE MATERIAL RESPONSE
PITCH DIAMETER5.984 INCHES NOMINAL IN
OVERALL LENGTH2.363 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
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 640-1370?
640-1370 is a SPROCKET WHEEL.
What is the NSN for 640-1370?
640-1370 is cataloged in the U.S. Government catalog under NSN 3020-01-259-8184. 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.