PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

612-ATester,material Hardness

Fischer George Foundry Systems Inc P O Box 1607 Seminole Ok 74818-1607 · NSN 6635-01-298-8380 · FSC 6635 · No Item Name Available
Verified by PartsTable
NSN 6635-01-298-8380 — this item is cataloged by the U.S. Government under National Stock Number 6635-01-298-8380. Primary manufacturer part number: 612-A.
Features
  • Tester,material Hardness — FSC 6635
  • Installation Design: FLOOR
  • Usage Design: INTERNAL
  • FSC Application Data: TENSILE TESTER
  • 1 verified cross-reference
  • Primary manufacturer: Fischer George Foundry Systems Inc P O Box 1607 Seminole Ok 74818-1607
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Tester,material Hardness, cataloged under National Stock Number 6635-01-298-8380, is classified within Federal Supply Class 6635 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Fischer George Foundry Systems Inc P O Box 1607 Seminole Ok 74818-1607. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6635-01-298-8380
Primary Part Number612-A
Item NameTester,material Hardness
FSC / FSG6635 / 66 — No Item Name Available
ManufacturerFischer George Foundry Systems Inc P O Box 1607 Seminole Ok 74818-1607
StatusACTIVE
Installation DesignFLOOR
Usage DesignINTERNAL
FSC Application DataTENSILE TESTER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5120-00-034-6776 INTERCHANGEABLE
Tool
5985-00-402-0053 INTERCHANGEABLE
Adapter,waveguide
6625-00-542-1292SG340G INTERCHANGEABLE
Generator,signal
Joint Electronics Type Designation System
4920-00-962-5867612A INTERCHANGEABLE
Mount,bolometer and Crystal
Telephonics Corp/prd Instruments
3455-01-042-4841 INTERCHANGEABLE
File,rotary
6625-01-098-0465612A INTERCHANGEABLE
Generator,signal
Keysight Technologies Inc
Cross-Reference Index
Part NumberManufacturer
612-A PRIMARY Fischer George Foundry Systems Inc P O Box 1607 Seminole Ok 74818-1607 (USA)
Related Parts
5120-00-034-6776INTERCHANGEABLE
TOOL
5985-00-402-0053INTERCHANGEABLE
ADAPTER,WAVEGUIDE
6625-00-542-1292INTERCHANGEABLE
GENERATOR,SIGNAL
SG340G
4920-00-962-5867INTERCHANGEABLE
MOUNT,BOLOMETER AND CRYSTAL
612A
3455-01-042-4841INTERCHANGEABLE
FILE,ROTARY
6625-01-098-0465INTERCHANGEABLE
GENERATOR,SIGNAL
612A

Frequently Asked Questions

What is NSN 6635-01-298-8380?

NSN 6635-01-298-8380 is a Tester,material Hardness, manufactured by Fischer George Foundry Systems Inc P O Box 1607 Seminole Ok 74818-1607, classified under FSC 6635 (No Item Name Available). Status: active.

What are the part numbers for NSN 6635-01-298-8380?

NSN 6635-01-298-8380 has 1 cross-referenced part number: 612-A (Fischer George Foundry Systems Inc P O Box 1607 Seminole Ok 74818-1607).

What NSN replaces 6635-01-298-8380?

There are 6 known substitutes for 6635-01-298-8380: 5120-00-034-6776, 5985-00-402-0053, 6625-00-542-1292 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 612-A?

Key specifications for 612-A: Installation Design: FLOOR; Special Features: LOADING RATE TO 1200PSI; Usage Design: INTERNAL; FSC Application Data: TENSILE TESTER. 4 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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