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R20421 ✓ 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

REFERENCE STANDARD SET,LATEX PAR. Key specifications include part_name_assigned_by_controlling_agency: REFERENCE STANDARD SET LATEX PARTICLE TURBIDITY. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6550-01-408-4901, 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
R20421
NSN: 6550-01-408-4901
FSC: 6550
CAGE: 7V410 — REMEL INC. (USA)
SPECIFICATIONS
special_featuresSET C/O 5 MCFARLAND EQUIVALENCE TURBIDITY STDS:O.5,1.0,2.0,3.0 AND 4.0;EA STD IS IN THE FORM OF LATEX PARTICLES IN 15X103 MM TUBES;W/VISUAL COMPARISON CHART;USED IN SUSCEPTIBILITY AND I.D. PROCEDURES
part_name_assigned_by_controlling_agencyREFERENCE STANDARD SET LATEX PARTICLE TURBIDITY
NSN6550-01-408-4901
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available REFERENCE STANDARD SET,LATEX PAR TITLE COMPONENT PN R20421 MFR REFERENCE STANDARD SET
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESSET C/O 5 MCFARLAND EQUIVALENCE TURBIDITY STDS:O.5,1.0,2.0,3.0 AND 4.0;EA STD IS IN THE FORM OF LATEX PARTICLES IN 15X103 MM TUBES;W/VISUAL COMPARISON CHART;USED IN SUSCEPTIBILITY AND I.D. PROCEDURES
PART NAME ASSIGNED BY CONTROLLING AGENCYREFERENCE STANDARD SET LATEX PARTICLE TURBIDITY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
2042-1Interchangeable
interchangeable cross-reference
interchangeable
X2042AInterchangeable
interchangeable cross-reference
interchangeable
245004Interchangeable
interchangeable cross-reference
interchangeable
RM611Interchangeable
interchangeable cross-reference
interchangeable
8513216Interchangeable
interchangeable cross-reference
interchangeable
AMES-2042-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R20421?
R20421 is a REFERENCE STANDARD SET,LATEX PAR.
What parts can replace R20421?
There are 15 known substitutes for R20421: 2042-1, X2042A, 245004 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R20421?
R20421 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6550-01-408-4901. 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