PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

64900Calibration Block

Ideal Specialty Inc. · NSN 6635-01-173-3129 · FSC 6635 · No Item Name Available
Verified by PartsTable
NSN 6635-01-173-3129 — this item is cataloged by the U.S. Government under National Stock Number 6635-01-173-3129. Primary manufacturer part number: 64900.
Features
  • Calibration Block — FSC 6635
  • General Characteristics Item Description: EDDY CURRENT
  • 2 verified cross-references
  • Primary manufacturer: Ideal Specialty Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Calibration Block, cataloged under National Stock Number 6635-01-173-3129, is classified within Federal Supply Class 6635 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Ideal Specialty Inc.. Government technical data includes 1 verified specification, 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6635-01-173-3129
Primary Part Number64900
Item NameCalibration Block
FSC / FSG6635 / 66 — No Item Name Available
ManufacturerIdeal Specialty Inc.
StatusACTIVE
General Characteristics Item DescriptionEDDY CURRENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5330-00-841-6536CA4767 INTERCHANGEABLE
Gasket
Stillman Seal Corporation Div Stillman Seal Corperation
9390-01-214-259564900 INTERCHANGEABLE
Bellows,protection
Adams Rite Aerospace, Inc
4440-01-358-8164649000 INTERCHANGEABLE
Desiccant Container,dehumidifier
Agm Container Controls Inc Dba Agm Container Controls Inc
7025-01-431-5806 INTERCHANGEABLE
Interface Unit,automatic Data Pr
Cross-Reference Index
Part NumberManufacturer
649000 Ideal Specialty Inc. (USA)
64900 PRIMARY Ideal Specialty Inc. (USA)
Related Parts
5330-00-841-6536INTERCHANGEABLE
GASKET
CA4767
9390-01-214-2595INTERCHANGEABLE
BELLOWS,PROTECTION
64900
4440-01-358-8164INTERCHANGEABLE
DESICCANT CONTAINER,DEHUMIDIFIER
649000
7025-01-431-5806INTERCHANGEABLE
INTERFACE UNIT,AUTOMATIC DATA PR

Frequently Asked Questions

What is NSN 6635-01-173-3129?

NSN 6635-01-173-3129 is a Calibration Block, manufactured by Ideal Specialty Inc., classified under FSC 6635 (No Item Name Available). Status: active.

What are the part numbers for NSN 6635-01-173-3129?

NSN 6635-01-173-3129 has 2 cross-referenced part numbers: 649000 (Ideal Specialty Inc.), 64900 (Ideal Specialty Inc.).

What NSN replaces 6635-01-173-3129?

There are 4 known substitutes for 6635-01-173-3129: 5330-00-841-6536, 9390-01-214-2595, 4440-01-358-8164 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 64900?

Key specifications for 64900: General Characteristics Item Description: EDDY CURRENT. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com