PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS35990-1Tripod,laboratory Apparatus

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 6640-00-290-6726 · FSC 6640 · No Item Name Available
Verified by PartsTable
NSN 6640-00-290-6726 — this item is cataloged by the U.S. Government under National Stock Number 6640-00-290-6726. Primary manufacturer part number: MS35990-1.
Features
  • Tripod,laboratory Apparatus — FSC 6640
  • Additional Ring Quantity: 2
  • Overall Diameter: 6.000 INCHES NOMINAL IN
  • Ring Type: CONCENTRIC
  • Dial Indicator Clamp: NOT INCLUDED
  • 2 verified cross-references
  • Primary manufacturer: Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Tripod,laboratory Apparatus, cataloged under National Stock Number 6640-00-290-6726, is classified within Federal Supply Class 6640 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6640-00-290-6726
Primary Part NumberMS35990-1
Item NameTripod,laboratory Apparatus
FSC / FSG6640 / 66 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Additional Ring Quantity2
Overall Diameter6.000 INCHES NOMINAL IN
Ring TypeCONCENTRIC
Dial Indicator ClampNOT INCLUDED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
9905-00-052-439219775 INTERCHANGEABLE
Plate,identification
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
5360-00-073-080519775 INTERCHANGEABLE
Spring,helical,compression
Cadillac Gage Textron Inc.
4320-00-248-0232019775 INTERCHANGEABLE
Impeller,pump,centrifugal
Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
9540-00-528-9346E711310XRAND INTERCHANGEABLE
Beam,structural
Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company
4130-00-779-484719775 INTERCHANGEABLE
Muffler Assembly,so
Hdt Expeditionary Systems Inc
2520-01-151-2226 INTERCHANGEABLE
Clutch Assembly,friction
6140-01-236-8602019775-000 INTERCHANGEABLE
Battery,storage
Saft America Inc. Dba Tadiran Batteries Div Aviation Division
5331-01-415-963219775 INTERCHANGEABLE
O-Ring
Spx Fluid Power
Cross-Reference Index
Part NumberManufacturer
MS35990-1 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
19775 Central Scientific Co Educational (USA)
Related Parts
9905-00-052-4392INTERCHANGEABLE
PLATE,IDENTIFICATION
19775
5360-00-073-0805INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
19775
4320-00-248-0232INTERCHANGEABLE
IMPELLER,PUMP,CENTRIFUGAL
019775
9540-00-528-9346INTERCHANGEABLE
BEAM,STRUCTURAL
E711310XRAND
4130-00-779-4847INTERCHANGEABLE
MUFFLER ASSEMBLY,SO
19775
2520-01-151-2226INTERCHANGEABLE
CLUTCH ASSEMBLY,FRICTION
6140-01-236-8602INTERCHANGEABLE
BATTERY,STORAGE
019775-000
5331-01-415-9632INTERCHANGEABLE
O-RING
19775

Frequently Asked Questions

What is NSN 6640-00-290-6726?

NSN 6640-00-290-6726 is a Tripod,laboratory Apparatus, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 6640 (No Item Name Available). Status: active.

What are the part numbers for NSN 6640-00-290-6726?

NSN 6640-00-290-6726 has 2 cross-referenced part numbers: MS35990-1 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 19775 (Central Scientific Co Educational).

What NSN replaces 6640-00-290-6726?

There are 8 known substitutes for 6640-00-290-6726: 9905-00-052-4392, 5360-00-073-0805, 4320-00-248-0232 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS35990-1?

Key specifications for MS35990-1: Additional Ring Quantity: 2; Overall Diameter: 6.000 INCHES NOMINAL IN; Ring Type: CONCENTRIC; Dial Indicator Clamp: NOT INCLUDED. 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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