PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

74966Viscosimeter

Precision Scientific Petroleum Instruments Co · NSN 6630-00-509-5254 · FSC 6630 · No Item Name Available
Verified by PartsTable
NSN 6630-00-509-5254 — this item is cataloged by the U.S. Government under National Stock Number 6630-00-509-5254. Primary manufacturer part number: 74966.
Features
  • Viscosimeter — FSC 6630
  • Unit of Issue Cube: 0.090 CUBIC FEET
  • General Characteristics Item Description: 4 TUBE CAPACITY,VISCOSITY TUBES NOT INCLUDED,ELEC DATA,115 VOLTS,50 TO 60 HZ,AC,1100 WATTS,CONSISTING OF A BATH HOUSING,ACOVER WITH 4 2.250 IN. SAYBOLT TUBE PORTS,THE BATH COMPARTMENT SUPPLIED WITH A MOTOR-DRIVEN STIRRING DEVICE,A COOLING COIL,HEATERS,AND THERMOSTATIC SENSING ELEMENT,ACCESSORIES FURNISHED,4 CHAINED CORKS,4 THERMOMETER SUPPORTS,1 PIPET W/RUBBER BULB,1 OIL STRAINER,1 VISCOSITY TUBE PORT CLOSURE,1 VISCOSITY TUBE CLEANER,1 TUBE NUT WRENCH AND 3 GALLONS OF WHITE BATH OIL,DIM. DATA,26.500 IN. H BY 14.750 IN. W BY 17.875 IN. DEPTH IN
  • 2 verified cross-references
  • Primary manufacturer: Precision Scientific Petroleum Instruments Co
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Viscosimeter, cataloged under National Stock Number 6630-00-509-5254, is classified within Federal Supply Class 6630 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Precision Scientific Petroleum Instruments Co. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6630-00-509-5254
Primary Part Number74966
Item NameViscosimeter
FSC / FSG6630 / 66 — No Item Name Available
ManufacturerPrecision Scientific Petroleum Instruments Co
StatusACTIVE
Unit of Issue Cube0.090 CUBIC FEET
General Characteristics Item Description4 TUBE CAPACITY,VISCOSITY TUBES NOT INCLUDED,ELEC DATA,115 VOLTS,50 TO 60 HZ,AC,1100 WATTS,CONSISTING OF A BATH HOUSING,ACOVER WITH 4 2.250 IN. SAYBOLT TUBE PORTS,THE BATH COMPARTMENT SUPPLIED WITH A MOTOR-DRIVEN STIRRING DEVICE,A COOLING COIL,HEATERS,AND THERMOSTATIC SENSING ELEMENT,ACCESSORIES FURNISHED,4 CHAINED CORKS,4 THERMOMETER SUPPORTS,1 PIPET W/RUBBER BULB,1 OIL STRAINER,1 VISCOSITY TUBE PORT CLOSURE,1 VISCOSITY TUBE CLEANER,1 TUBE NUT WRENCH AND 3 GALLONS OF WHITE BATH OIL,DIM. DATA,26.500 IN. H BY 14.750 IN. W BY 17.875 IN. DEPTH IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
2910-00-073-343674962 INTERCHANGEABLE
Gasket,cover
John Deer Consumer Products Inc
4730-00-278-083274962 INTERCHANGEABLE
Ferrule,brazing,tube Fitting
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5360-00-448-391174962 INTERCHANGEABLE
Spring,helical,extension
Telemechanics Inc
2915-00-482-574774962 INTERCHANGEABLE
Valve Assembly,mult
Triumph Engine Control Systems Llc
5935-00-803-336410-113177-01P INTERCHANGEABLE
Connector,receptacle,electrical
Amphenol Corp Div Amphenol Aerospace Operations
Cross-Reference Index
Part NumberManufacturer
74962 Precision Scientific Petroleum Instruments Co (USA)
74966 PRIMARY Precision Scientific Petroleum Instruments Co (USA)
Related Parts
2910-00-073-3436INTERCHANGEABLE
GASKET,COVER
74962
4730-00-278-0832INTERCHANGEABLE
FERRULE,BRAZING,TUBE FITTING
74962
5360-00-448-3911INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
74962
2915-00-482-5747INTERCHANGEABLE
VALVE ASSEMBLY,MULT
74962
5935-00-803-3364INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
10-113177-01P

Frequently Asked Questions

What is NSN 6630-00-509-5254?

NSN 6630-00-509-5254 is a Viscosimeter, manufactured by Precision Scientific Petroleum Instruments Co, classified under FSC 6630 (No Item Name Available). Status: active.

What are the part numbers for NSN 6630-00-509-5254?

NSN 6630-00-509-5254 has 2 cross-referenced part numbers: 74962 (Precision Scientific Petroleum Instruments Co), 74966 (Precision Scientific Petroleum Instruments Co).

What NSN replaces 6630-00-509-5254?

There are 5 known substitutes for 6630-00-509-5254: 2910-00-073-3436, 4730-00-278-0832, 5360-00-448-3911 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 74966?

Key specifications for 74966: Unit of Issue Cube: 0.090 CUBIC FEET; General Characteristics Item Description: 4 TUBE CAPACITY,VISCOSITY TUBES NOT INCLUDED,ELEC DATA,115 VOLTS,50 TO 60 HZ,AC,1100 WATTS,CONSISTING OF A BATH HOUSING,ACOVER WITH 4 2.250 IN. SAYBOLT TUBE PORTS,THE BATH COMPARTMENT SUPPLIED WITH A MOTOR-DRIVEN STIRRING DEVICE,A COOLING COIL,HEATERS,AND THERMOSTATIC SENSING ELEMENT,ACCESSORIES FURNISHED,4 CHAINED CORKS,4 THERMOMETER SUPPORTS,1 PIPET W/RUBBER BULB,1 OIL STRAINER,1 VISCOSITY TUBE PORT CLOSURE,1 VISCOSITY TUBE CLEANER,1 TUBE NUT WRENCH AND 3 GALLONS OF WHITE BATH OIL,DIM. DATA,26.500 IN. H BY 14.750 IN. W BY 17.875 IN. DEPTH IN. 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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