PartsTable
Technical Data Sheet
PartsTable / MRO / HR-242
HR-242 ✓ 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

RESISTOR,VARIABLE,NONWIRE WOUND,. Key specifications include material: GLASS MIRROR, body_style: CYLINDRICAL BUSHING MOUNTED, body_length: 0.625 INCHES NOMINAL IN, frame_width: 7.187 INCHES NOMINAL IN, shaft_style: ROUND, frame_length: 16.094 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2540-00-788-5637, 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→ HR-242
NSN: 2540-00-788-5637
FSC: 2540
CAGE: 14939 — DELBAR PRODUCTS INCORPORATED (USA)
SPECIFICATIONS
materialGLASS MIRROR
body_styleCYLINDRICAL BUSHING MOUNTED
body_length0.625 INCHES NOMINAL IN
frame_width7.187 INCHES NOMINAL IN
shaft_styleROUND
frame_length16.094 INCHES NOMINAL IN
mirror_shapeRECTANGULAR
shaft_length0.875 INCHES NOMINAL IN
actuator_typeSINGLE SHAFT
body_diameter1.156 INCHES NOMINAL IN
overall_length1.500 INCHES NOMINAL IN
shaft_diameter0.250 INCHES NOMINAL IN
NSN2540-00-788-5637
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RESISTOR,VARIABLE,NONWIRE WOUND, TITLE COMPONENT PN HR-242 MFR RESISTOR,VARIABLE,NONW
KEY FEATURES
•
MATERIAL: GLASS MIRROR
•
SURFACE TREATMENT: PAINT
•
MIRROR SHAPE: RECTANGULAR
•
MOUNTING CONFIGURATION: STUD MTG 1/7-28 UNF OR NF CLASS 28 THD OR CLASS 2 FIT,7/16 IN. LG IN
•
MOUNTING LOCATION: OUTSIDE
•
FRAME WIDTH: 7.187 INCHES NOMINAL IN
•
FRAME LENGTH: 16.094 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALGLASS MIRROR
SURFACE TREATMENTPAINT
MIRROR SHAPERECTANGULAR
MOUNTING CONFIGURATIONSTUD MTG 1/7-28 UNF OR NF CLASS 28 THD OR CLASS 2 FIT,7/16 IN. LG IN
MOUNTING LOCATIONOUTSIDE
FRAME WIDTH7.187 INCHES NOMINAL IN
FRAME LENGTH16.094 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
1B3948Interchangeable
interchangeable cross-reference
interchangeable
1930Interchangeable
interchangeable cross-reference
interchangeable
120733Interchangeable
interchangeable cross-reference
interchangeable
27954Interchangeable
interchangeable cross-reference
interchangeable
00044Interchangeable
interchangeable cross-reference
interchangeable
51X1930Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is HR-242?
HR-242 is a RESISTOR,VARIABLE,NONWIRE WOUND,. It is classified as a MRO (MRO_GENERAL).
What parts can replace HR-242?
There are 28 known substitutes for HR-242: 1B3948, 1930, 120733 and 25 more. Substitute compatibility should be verified for your specific system.
Is HR-242 still available?
HR-242 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026