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PartsTable / COMPONENT / R21103
R21103 ✓ 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

PARTS KIT,HYDRAULIC BRAKE MASTER. Key specifications include color: BLACK, shape: RECTANGULAR, width: 34.000 INCHES NOMINAL IN, handle: NOT FURNISHED, length: 72.000 INCHES NOMINAL IN, diameter: 1.000 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 2530-00-621-3670, 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
R21103
NSN: 2530-00-621-3670
FSC: 2530
CAGE: 83120 — PRESSED METALS OF AMERICA INC (USA)
SPECIFICATIONS
colorBLACK
shapeRECTANGULAR
width34.000 INCHES NOMINAL IN
handleNOT FURNISHED
length72.000 INCHES NOMINAL IN
diameter1.000 INCHES NOMINAL IN
markings1 INCH STD IN
materialCOTTON
back_gage25.000 INCHES IN
bed_width14.000 INCHES NOMINAL IN
duty_typeCONTINUOUS
end_shapeFLAT
NSN2530-00-621-3670
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available PARTS KIT,HYDRAULIC BRAKE MASTER TITLE COMPONENT PN R21103 MFR PARTS KIT,HYDRAULIC BR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
21751Interchangeable
interchangeable cross-reference
interchangeable
636AS 148-1Interchangeable
interchangeable cross-reference
interchangeable
499-002-107Interchangeable
interchangeable cross-reference
interchangeable
B4-903Interchangeable
interchangeable cross-reference
interchangeable
QQB575R30T0656Interchangeable
interchangeable cross-reference
interchangeable
QQB575R36T625Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R21103?
R21103 is a PARTS KIT,HYDRAULIC BRAKE MASTER.
What parts can replace R21103?
There are 21 known substitutes for R21103: 21751, 636AS 148-1, 499-002-107 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R21103?
R21103 is cataloged in the Federal Logistics Information System (FLIS) under NSN 2530-00-621-3670. 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