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PartsTable / COMPONENT / 191999
191999 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The SLEEVE,CLUTCH is a the manufacturer industrial component. Key specifications include nut_style: CASTELLATED, HEXAGON, nut_height: 0.312 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNF, thread_direction: RIGHT-HAND, surface_treatment: CADMIUM OR ZINC OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2520-00-846-0181, 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
191999
NSN: 2520-00-846-0181
FSC: 2520
CAGE: 13841 — TIFFIN PARTS, L.L.C. DIV SUBSIDIARY OF PETTIBONE CORP. (USA)
SPECIFICATIONS
nut_styleCASTELLATED, HEXAGON
nut_height0.312 INCHES NOMINAL IN
thread_class3B
thread_seriesUNF
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OR ZINC OVERALL
width_across_flats0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
nominal_thread_size0.250 INCHES IN
bearing_surface_typeFLAT
thread_quantity_per_inch28
NSN2520-00-846-0181
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SLEEVE,CLUTCH TITLE COMPONENT PN 191999 MFR SLEEVE,CLUTCH
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL,BODY 2.391 IN. OD,BEARING 3.688 IN. OD,1.375 IN. ID,2.891 IN. O/A LG IN
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL,BODY 2.391 IN. OD,BEARING 3.688 IN. OD,1.375 IN. ID,2.891 IN. O/A LG IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
0127300-2Interchangeable
interchangeable cross-reference
interchangeable
27300Interchangeable
interchangeable cross-reference
interchangeable
0127300Interchangeable
interchangeable cross-reference
interchangeable
JH3116Interchangeable
interchangeable cross-reference
interchangeable
PA12Interchangeable
interchangeable cross-reference
interchangeable
12Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 191999?
191999 is a SLEEVE,CLUTCH.
What parts can replace 191999?
There are 17 known substitutes for 191999: 0127300-2, 27300, 0127300 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 191999?
191999 is cataloged in the Federal Logistics Information System (FLIS) under NSN 2520-00-846-0181. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026