PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

R20421Reference Standard Set,latex Par

Remel Inc. · NSN 6550-01-408-4901 · FSC 6550 · No Item Name Available
Verified by PartsTable
NSN 6550-01-408-4901 — this item is cataloged by the U.S. Government under National Stock Number 6550-01-408-4901. Primary manufacturer part number: R20421.
Features
  • Reference Standard Set,latex Par — FSC 6550
  • 4 verified cross-references
  • Primary manufacturer: Remel Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reference Standard Set,latex Par, cataloged under National Stock Number 6550-01-408-4901, is classified within Federal Supply Class 6550 (No Item Name Available) of the Medical, Dental, and Veterinary Equipment group. The primary manufacturer of record is Remel Inc.. This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: SE.

Technical Specifications
ParameterValue
NSN6550-01-408-4901
Primary Part NumberR20421
Item NameReference Standard Set,latex Par
FSC / FSG6550 / 65 — No Item Name Available
ManufacturerRemel Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueSE
Verified Substitutes 11
6210-00-223-64652042-1 INTERCHANGEABLE
Light Assembly,indicator
Safran Electronics & Defense, Avionics Usa, Llc
5940-00-503-6368245004 INTERCHANGEABLE
Terminal,stud
Cae Usa Inc.
5815-00-600-2685 INTERCHANGEABLE
Plug,connector
6210-00-776-1661 INTERCHANGEABLE
Lens,light
5999-00-790-16168513216 INTERCHANGEABLE
Contact,electrical
Us Army Aviation and Missile Command
5330-01-017-153520421 INTERCHANGEABLE
Gasket
Parker-Hannifin Corporation Dba Parker Hannifin Advanced Products Co Div Composite Sealing Systems Division
5310-01-391-4277 INTERCHANGEABLE
Washer,lock
5120-01-430-7993 INTERCHANGEABLE
Wrench,box and Open End,combinat
7920-01-585-41502042-1 INTERCHANGEABLE
Brush,scrub
Tech Spray Inc
4820-01-672-681820421 INTERCHANGEABLE
Valve,ball
United States Plastic Corp
Cross-Reference Index
Part NumberManufacturer
MCFARLAND EQUIVALENCE TURBIDITY Remel Inc. (USA)
R20421 PRIMARY Remel Inc. (USA)
20-421 Remel Inc. (USA)
MCFARLAND TURBIDITY STANDARD SET Remel Inc. (USA)
Related Parts
6210-00-223-6465INTERCHANGEABLE
LIGHT ASSEMBLY,INDICATOR
2042-1
5940-00-503-6368INTERCHANGEABLE
TERMINAL,STUD
245004
5815-00-600-2685INTERCHANGEABLE
PLUG,CONNECTOR
6210-00-776-1661INTERCHANGEABLE
LENS,LIGHT
5999-00-790-1616INTERCHANGEABLE
CONTACT,ELECTRICAL
8513216
5330-01-017-1535INTERCHANGEABLE
GASKET
20421
5310-01-391-4277INTERCHANGEABLE
WASHER,LOCK
5120-01-430-7993INTERCHANGEABLE
WRENCH,BOX AND OPEN END,COMBINAT
7920-01-585-4150INTERCHANGEABLE
BRUSH,SCRUB
2042-1
4820-01-672-6818INTERCHANGEABLE
VALVE,BALL
20421
4310-01-706-2918INTERCHANGEABLE
RING,PISTON
18-20417-12R1

Frequently Asked Questions

What is NSN 6550-01-408-4901?

NSN 6550-01-408-4901 is a Reference Standard Set,latex Par, manufactured by Remel Inc., classified under FSC 6550 (No Item Name Available). Status: active.

What are the part numbers for NSN 6550-01-408-4901?

NSN 6550-01-408-4901 has 4 cross-referenced part numbers: MCFARLAND EQUIVALENCE TURBIDITY (Remel Inc.), R20421 (Remel Inc.), 20-421 (Remel Inc.), MCFARLAND TURBIDITY STANDARD SET (Remel Inc.).

What NSN replaces 6550-01-408-4901?

There are 11 known substitutes for 6550-01-408-4901: 6210-00-223-6465, 5940-00-503-6368, 5815-00-600-2685 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of R20421?

Key specifications for R20421: Special Features: SET 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 Agency: REFERENCE STANDARD SET LATEX PARTICLE TURBIDITY. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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