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SI169 — DIFFERENTIAL GEAR UNIT

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

SI169: DIFFERENTIAL GEAR UNIT.

The DIFFERENTIAL GEAR UNIT is a the manufacturer industrial component. Key specifications include nominal_overall_length: 2.156 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 3040-01-188-1279, 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
SI169
NSN: 3040-01-188-1279
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 09380 — SUPERITE GEAR AND INSTRUMENT CORP (USA)
SPECIFICATIONS
nominal_overall_length2.156 INCHES IN
NSN3040-01-188-1279
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available DIFFERENTIAL GEAR UNIT TITLE COMPONENT PN SI169 MFR DIFFERENTIAL GEAR UNIT
KEY FEATURES
•
NOMINAL OVERALL LENGTH: 2.156 INCHES IN
TECHNICAL CHARACTERISTICS
NOMINAL OVERALL LENGTH2.156 INCHES IN
SPECIAL FEATURESSHAFTS, END GEARS AND PINION, CORROSION RESISTANT STEEL; SHAFT: 1ST END, OUTSIDE DIAMETER 0.1247 INCHES, LENGTH 0.449 INCHES, 2ND END: OUTSIDE DIAMETER 0.1247 INCHES, LENGTH 0.755 INCHES; OVERALL OUTSIDE DIAMETER 0.875 INCHES IN
OTHER ITEMS IN FSC 3040 — Miscellaneous Power Transmission Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3040-00-001-0046 3040-00-001-0047 3040-00-001-0048 3040-00-001-0068 3040-00-001-0077 3040-00-001-0078 3040-00-001-0089 3040-00-001-1224
SUBSTITUTES & CROSS-REFERENCES 1
3252-81181Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 SI169?
SI169 is a DIFFERENTIAL GEAR UNIT.
What parts can replace SI169?
There is 1 known substitute for SI169: 3252-81181. Substitute compatibility should be verified for your specific system.
What is the NSN for SI169?
SI169 is cataloged in the U.S. Government catalog under NSN 3040-01-188-1279. 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.