PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

R21200Naphthol

Remel Inc. · NSN 6550-01-359-5093 · FSC 6550 · No Item Name Available
Verified by PartsTable
NSN 6550-01-359-5093 — this item is cataloged by the U.S. Government under National Stock Number 6550-01-359-5093. Primary manufacturer part number: R21200.
Features
  • Naphthol — FSC 6550
  • Physical Form: LIQUID
  • Medical Designation and Grade: REAGENT
  • Primary Container Type: VIAL
  • Primary Container Content Quantity: 12.000 MILLILITERS
  • 3 verified cross-references
  • Primary manufacturer: Remel Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Naphthol, cataloged under National Stock Number 6550-01-359-5093, 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.. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: VI.

Technical Specifications
ParameterValue
NSN6550-01-359-5093
Primary Part NumberR21200
Item NameNaphthol
FSC / FSG6550 / 65 — No Item Name Available
ManufacturerRemel Inc.
StatusACTIVE
Physical FormLIQUID
Medical Designation and GradeREAGENT
Primary Container TypeVIAL
Primary Container Content Quantity12.000 MILLILITERS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueVI
Verified Substitutes 12
5935-00-135-20853281-2241-00 INTERCHANGEABLE
Adapter,connector
Tyco Electronics Corp
6685-00-245-7696ASTM 58F INTERCHANGEABLE
Thermometer,self-Indicating
American Society for Testing and Materials Dba Astm International
5305-00-335-378812100 INTERCHANGEABLE
Screw
Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems
3820-00-429-97757060-004 INTERCHANGEABLE
Window,gage
Terex Usa, Llc Dba Terex Equipment Services
5340-00-634-735721200 INTERCHANGEABLE
Handwheel
Northrop Grumman Systems Corporation Div Marine Systems
9540-00-805-6440 INTERCHANGEABLE
Structural Section,special Shape
5945-01-157-068521-200 INTERCHANGEABLE
Relay,hybrid
Te Connectivity Corporation
7350-01-256-108621200 INTERCHANGEABLE
Plate,eating
Babco International Inc
4820-01-309-3404 INTERCHANGEABLE
Seat,valve
9390-01-342-7501 INTERCHANGEABLE
Tape,reflective
Cross-Reference Index
Part NumberManufacturer
F92E032 Air Force Medical Logistics Office (USA)
R21200 PRIMARY Remel Inc. (USA)
21-200 Remel Inc. (USA)
Related Parts
5935-00-135-2085INTERCHANGEABLE
ADAPTER,CONNECTOR
3281-2241-00
6685-00-245-7696INTERCHANGEABLE
THERMOMETER,SELF-INDICATING
ASTM 58F
5305-00-335-3788INTERCHANGEABLE
SCREW
12100
3820-00-429-9775INTERCHANGEABLE
WINDOW,GAGE
7060-004
5340-00-634-7357INTERCHANGEABLE
HANDWHEEL
21200
9540-00-805-6440INTERCHANGEABLE
STRUCTURAL SECTION,SPECIAL SHAPE
5945-01-157-0685INTERCHANGEABLE
RELAY,HYBRID
21-200
7350-01-256-1086INTERCHANGEABLE
PLATE,EATING
21200
4820-01-309-3404INTERCHANGEABLE
SEAT,VALVE
9390-01-342-7501INTERCHANGEABLE
TAPE,REFLECTIVE
4820-01-419-2547INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
21200-001
4820-01-419-2621INTERCHANGEABLE
PISTON,VALVE

Frequently Asked Questions

What is NSN 6550-01-359-5093?

NSN 6550-01-359-5093 is a Naphthol, manufactured by Remel Inc., classified under FSC 6550 (No Item Name Available). Status: active.

What are the part numbers for NSN 6550-01-359-5093?

NSN 6550-01-359-5093 has 3 cross-referenced part numbers: F92E032 (Air Force Medical Logistics Office), R21200 (Remel Inc.), 21-200 (Remel Inc.).

What NSN replaces 6550-01-359-5093?

There are 12 known substitutes for 6550-01-359-5093: 5935-00-135-2085, 6685-00-245-7696, 5305-00-335-3788 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of R21200?

Key specifications for R21200: Physical Form: LIQUID; Medical Designation and Grade: REAGENT; Special Features: 5 PERCENT; REFRIGERATE BETWEEN 2-8 DEGREES C. KEEP AWAY FROM IGNITION SOURCES, TIGHTLY CLOSED.; Part Name Assigned by Controlling Agency: NAPHTHOL REAGENT LIQUID 5% 12 ML VIAL. 6 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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