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Technical Data Sheet
PartsTable / COMPONENT / R-21
R-21 ✓ 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 ADAPTER,ELECTRICAL CONDUIT is a the manufacturer industrial component. Key specifications include color: BLACK BORDER, width: 18.000 INCHES NOMINAL IN, length: 24.000 INCHES NOMINAL IN, end_type: EXTERNAL THREAD SINGLE END, material: ALUMINUM ALLOY 6061, thickness: 0.080 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 9905-00-057-3262, 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
R-21
NSN: 9905-00-057-3262
FSC: 9905
CAGE: 50993 — DEPARTMENT OF TRANSPORTATION (USA)
SPECIFICATIONS
colorBLACK BORDER
width18.000 INCHES NOMINAL IN
length24.000 INCHES NOMINAL IN
end_typeEXTERNAL THREAD SINGLE END
materialALUMINUM ALLOY 6061
thickness0.080 INCHES NOMINAL IN
inscriptionSPEED LIMIT 5
design_shapeRECTANGLE
core_diameter0.050 INCHES NOMINAL IN
core_materialSTEEL
overall_length0.875 INCHES NOMINAL IN
travel_distance2.000 INCHES NOMINAL IN
NSN9905-00-057-3262
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available ADAPTER,ELECTRICAL CONDUIT TITLE COMPONENT PN R-21 MFR ADAPTER,ELECTRICAL CON
KEY FEATURES
•
COLOR: WHITE INSCRIPTION BACKGROUND
•
ENVIRONMENTAL ATTRIBUTE CODE: COMPREHENSIVE PROCUREMENT GUIDELINE - MISCELLANEOUS PRODUCTS - SIGNAGE
•
DESIGN SHAPE: RECTANGLE
•
REFLECTING SURFACE: BACKGROUND AND LEGEND
•
THICKNESS: 0.080 INCHES NOMINAL IN
•
LENGTH: 24.000 INCHES NOMINAL IN
•
SURFACE TREATMENT: PAINT
•
MATERIAL: ALUMINUM ALLOY
TECHNICAL CHARACTERISTICS (FLIS)
COLORWHITE INSCRIPTION BACKGROUND
ENVIRONMENTAL ATTRIBUTE CODECOMPREHENSIVE PROCUREMENT GUIDELINE - MISCELLANEOUS PRODUCTS - SIGNAGE
DESIGN SHAPERECTANGLE
REFLECTING SURFACEBACKGROUND AND LEGEND
THICKNESS0.080 INCHES NOMINAL IN
LENGTH24.000 INCHES NOMINAL IN
SURFACE TREATMENTPAINT
MATERIALALUMINUM ALLOY
COLORBLACK INSCRIPTION
POST-CONSUMER RECOVERED MATERIALS PERCENTAGE25.0
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
658555Interchangeable
interchangeable cross-reference
interchangeable
R21Interchangeable
interchangeable cross-reference
interchangeable
MUTCD R2-1Interchangeable
interchangeable cross-reference
interchangeable
R211018X24HAInterchangeable
interchangeable cross-reference
interchangeable
1538170Interchangeable
interchangeable cross-reference
interchangeable
1538484Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R-21?
R-21 is a ADAPTER,ELECTRICAL CONDUIT.
What parts can replace R-21?
There are 14 known substitutes for R-21: 658555, R21, MUTCD R2-1 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R-21?
R-21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 9905-00-057-3262. 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