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91900187 — GEAR RACK

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

91900187: GEAR RACK.

The GEAR RACK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 416 OVERALL, teeth_type: SPUR, tooth_form: STUB, pitch_height: 0.4580 INCHES MINIMUM AND 0.4590 INCHES MAXIMUM IN, pressure_angle: 20.0000 DEGREES, teeth_quantity: 274. This part is cataloged in the U.S.

Government catalog under NSN 3020-00-256-3228, 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
91900187
NSN: 3020-00-256-3228
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 07421 — L3HARRIS INTERSTATE ELECTRONICS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 416 OVERALL
teeth_typeSPUR
tooth_formSTUB
pitch_height0.4580 INCHES MINIMUM AND 0.4590 INCHES MAXIMUM IN
pressure_angle20.0000 DEGREES
teeth_quantity274
style_designatorROUND
nominal_thickness0.219 INCHES IN
surface_treatmentPASSIVATE OVERALL
face_nominal_width0.156 INCHES IN
nominal_overall_length18.000 INCHES IN
nominal_outside_diameter0.250 INCHES IN
NSN3020-00-256-3228
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GEAR RACK TITLE COMPONENT PN 91900187 MFR GEAR RACK
KEY FEATURES
•
TEETH QUANTITY: 274
•
PITCH HEIGHT: 0.4580 INCHES MINIMUM AND 0.4590 INCHES MAXIMUM IN
•
TEETH TYPE: SPUR
•
NOMINAL OVERALL LENGTH: 18.000 INCHES IN
•
STYLE DESIGNATOR: ROUND
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763,CLASS 416 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
TOOTH FORM: STUB
•
NOMINAL OUTSIDE DIAMETER: 0.250 INCHES IN
TECHNICAL CHARACTERISTICS
TEETH QUANTITY274
PITCH HEIGHT0.4580 INCHES MINIMUM AND 0.4590 INCHES MAXIMUM IN
TEETH TYPESPUR
NOMINAL OVERALL LENGTH18.000 INCHES IN
STYLE DESIGNATORROUND
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,CLASS 416 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TOOTH FORMSTUB
NOMINAL OUTSIDE DIAMETER0.250 INCHES IN
SURFACE TREATMENTPASSIVATE OVERALL
PRESSURE ANGLE20.0000 DEGREES
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.
3020-00-001-2090 3020-00-001-4468 3020-00-007-2779 3020-00-009-4033 3020-00-031-2269 3020-00-146-4181 3020-00-146-4222 3020-00-425-7115
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 91900187?
91900187 is a GEAR RACK.
What is the NSN for 91900187?
91900187 is cataloged in the U.S. Government catalog under NSN 3020-00-256-3228. 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.