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Technical Data Sheet
PartsTable / MRO / 74491
74491 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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 ROLLER,GUIDE is a the manufacturer industrial component. Key specifications include overall_width: 2.250 INCHES NOMINAL IN, overall_height: 0.062 INCHES NOMINAL IN, overall_length: 4.300 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5815-00-125-4972, 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
MRO→ MRO_GENERAL→ 74491
NSN: 5815-00-125-4972
FSC: 5815
CAGE: 70408 — AT AND T CORP (USA)
SPECIFICATIONS
overall_width2.250 INCHES NOMINAL IN
overall_height0.062 INCHES NOMINAL IN
overall_length4.300 INCHES NOMINAL IN
special_featuresMTG METHOD: PRINTED CICUIT; MTG CONFG: PLUG IN MTD; MAJ COMP: AMPLIFIER 2, CAPACITOR 9, DIODE 4, PRINTED WIRING BOARD 1, RESISTOR 17, TRANSFORMER 1, TRANSISTOR 3
general_characteristics_item_descriptionCRES,ASTM A582 TYPE 303,FINISH PASSIVATE PER MIL-F-14072 NO. E300,5.000 IN. O/A LG,1.749 IN. MIN TO 1.750 IN. MAX DIA,WITH 1/8 NPT ZIRC FITTING IN CENTER OF ONE END IN
NSN5815-00-125-4972
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available ROLLER,GUIDE TITLE COMPONENT PN 74491 MFR ROLLER,GUIDE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
7449-1Interchangeable
interchangeable cross-reference
interchangeable
7449Interchangeable
interchangeable cross-reference
interchangeable
PL7443PC3Interchangeable
interchangeable cross-reference
interchangeable
7449 ITEM 1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 74491?
74491 is a ROLLER,GUIDE. It is classified as a MRO (MRO_GENERAL).
What parts can replace 74491?
There are 4 known substitutes for 74491: 7449-1, 7449, PL7443PC3 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 74491?
74491 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5815-00-125-4972. 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