PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

73410Test Bath,viscosimeter,oil

Precision Scientific Petroleum Instruments Co · NSN 6630-00-729-3990 · FSC 6630 · No Item Name Available
Verified by PartsTable
NSN 6630-00-729-3990 — this item is cataloged by the U.S. Government under National Stock Number 6630-00-729-3990. Primary manufacturer part number: 73410.
Features
  • Test Bath,viscosimeter,oil — FSC 6630
  • Constant Temp Control: INCLUDED
  • Heating Method: ELECTRICAL
  • Heating Element Wattage in Watts: 900.0
  • Reservoir Inside Diameter: 16.000 INCHES NOMINAL IN
  • Element Quantity: 3
  • Accuracy Rating: -0.50 DEG FAHRENHEIT AND 0.50 DEG FAHRENHEIT
  • Heating Element Voltage in Volts: 115.0
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Test Bath,viscosimeter,oil, cataloged under National Stock Number 6630-00-729-3990, 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 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6630-00-729-3990
Primary Part Number73410
Item NameTest Bath,viscosimeter,oil
FSC / FSG6630 / 66 — No Item Name Available
ManufacturerPrecision Scientific Petroleum Instruments Co
StatusCANCELLED
Constant Temp ControlINCLUDED
Heating MethodELECTRICAL
Heating Element Wattage in Watts900.0
Reservoir Inside Diameter16.000 INCHES NOMINAL IN
Element Quantity3
Accuracy Rating-0.50 DEG FAHRENHEIT AND 0.50 DEG FAHRENHEIT
Heating Element Voltage in Volts115.0
Operating Temp Indicating LiquidWHITE OIL
Heating Element PhaseSINGLE
Temp Rating0.0 FAHRENHEIT AND 210.0 FAHRENHEIT DEGF
Heating Element Frequency in Hertz50.0 OR 60.0
Liquid CirculatorINCLUDED
Reservoir Inside Depth12.000 INCHES NOMINAL IN
Pipette Quantity for Which Designed3
Heating Element TypeLAGLESS
Accommodated Pipette DesignOSTWALD OR UBBELOHDE
Heating Element Current TypeAC
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5305-00-399-109873-410 INTERCHANGEABLE
Screw,machine
Cnh Industrial America Llc Dba Cnh America
5815-00-412-598973410 INTERCHANGEABLE
Screwdriver
Telemechanics Inc
5365-00-461-56218HP50NS INTERCHANGEABLE
Plug,machine Thread
Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division
5995-01-057-6921608-921-004-694 INTERCHANGEABLE
Cable Assembly,telephone
Roanwell, Llc
5305-01-613-027573410 INTERCHANGEABLE
Screw,cap,socket Head
Fastenal Co Inc
Cross-Reference Index
Part NumberManufacturer
73410 Fag Bearings Corporation (USA)
73410 PRIMARY Precision Scientific Petroleum Instruments Co (USA)
16-0772W/CUPS PRIMARY Petrolab, L.l.c. (USA)
Related Parts
5305-00-399-1098INTERCHANGEABLE
SCREW,MACHINE
73-410
5815-00-412-5989INTERCHANGEABLE
SCREWDRIVER
73410
5365-00-461-5621INTERCHANGEABLE
PLUG,MACHINE THREAD
8HP50NS
5995-01-057-6921INTERCHANGEABLE
CABLE ASSEMBLY,TELEPHONE
608-921-004-694
5305-01-613-0275INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
73410

Frequently Asked Questions

What is NSN 6630-00-729-3990?

NSN 6630-00-729-3990 is a Test Bath,viscosimeter,oil, manufactured by Precision Scientific Petroleum Instruments Co, classified under FSC 6630 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6630-00-729-3990?

NSN 6630-00-729-3990 has 3 cross-referenced part numbers: 73410 (Fag Bearings Corporation), 73410 (Precision Scientific Petroleum Instruments Co), 16-0772W/CUPS (Petrolab, L.l.c.).

What NSN replaces 6630-00-729-3990?

There are 5 known substitutes for 6630-00-729-3990: 5305-00-399-1098, 5815-00-412-5989, 5365-00-461-5621 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 73410?

Key specifications for 73410: Constant Temp Control: INCLUDED; Heating Method: ELECTRICAL; Heating Element Wattage in Watts: 900.0; Reservoir Inside Diameter: 16.000 INCHES NOMINAL IN. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6630-00-729-3990 still in active supply?

NSN 6630-00-729-3990 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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