PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9120251Tester,material Hardness

Illinois Tool Works Inc. Dba Buehler Div Buehler · NSN 6635-01-053-6482 · FSC 6635 · No Item Name Available
Verified by PartsTable
NSN 6635-01-053-6482 — this item is cataloged by the U.S. Government under National Stock Number 6635-01-053-6482. Primary manufacturer part number: 9120251.
Features
  • Tester,material Hardness — FSC 6635
  • Indicator Type: CIRCULAR DIAL
  • Vertical Capacity: 4.500 INCHES IN
  • Indicator Design: DIRECT READING
  • Test Type: ROCKWELL
  • Accessory Components and Quantity: ROCKWELL TEST BLOCK 2,MANUAL 1,FLAT ANVIL 1, V ANVIL 1, 1/16 BALL PENETRATOR 1 V
  • Indicator Reading Type: SINGLE
  • Horizontal Reach: 2.250 INCHES IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Tester,material Hardness, cataloged under National Stock Number 6635-01-053-6482, is classified within Federal Supply Class 6635 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Illinois Tool Works Inc. Dba Buehler Div Buehler. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6635-01-053-6482
Primary Part Number9120251
Item NameTester,material Hardness
FSC / FSG6635 / 66 — No Item Name Available
ManufacturerIllinois Tool Works Inc. Dba Buehler Div Buehler
StatusACTIVE
Indicator TypeCIRCULAR DIAL
Vertical Capacity4.500 INCHES IN
Indicator DesignDIRECT READING
Test TypeROCKWELL
Accessory Components and QuantityROCKWELL TEST BLOCK 2,MANUAL 1,FLAT ANVIL 1, V ANVIL 1, 1/16 BALL PENETRATOR 1 V
Indicator Reading TypeSINGLE
Horizontal Reach2.250 INCHES IN
Usage DesignEXTERNAL
Carrying CasePROVIDED
Installation DesignPORTABLE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5120-00-240-141840981 INTERCHANGEABLE
Handle,socket Wrench
S K Hand Tool Corp
2320-00-289-9094 INTERCHANGEABLE
Truck,dump
5845-00-438-493794500 INTERCHANGEABLE
Detecting-Ranging Set Subassembl
L3 Technologies, Inc. Div L3harris Edo Western Corporation
5905-00-500-6555956018-61 INTERCHANGEABLE
Resistor,fixed,wire Wound
Raytheon Company Dba Raytheon
5905-00-502-9738956018-84 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Raytheon Company Dba Raytheon
5930-00-549-0158B3221-5 INTERCHANGEABLE
Switch,thermostatic
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
6635-00-805-612594176 INTERCHANGEABLE
Tester,material Hardness
Illinois Tool Works Inc Dba Illinois Tool Works Inc Div Instron, a Division of Illinois Tool Works, Inc.
2320-00-835-83368358336 INTERCHANGEABLE
Truck,dump
U S Army Tank Automotive Command Amsta-Im-Mm
2320-00-835-83378358337 INTERCHANGEABLE
Truck,dump
U S Army Tank Automotive Command Amsta-Im-Mm
2320-00-835-8527 INTERCHANGEABLE
Truck,dump
Cross-Reference Index
Part NumberManufacturer
9120251 PRIMARY Illinois Tool Works Inc. Dba Buehler Div Buehler (USA)
94500 Illinois Tool Works Inc Dba Illinois Tool Works Inc Div Instron, a Division of Illinois Tool Works, Inc. (USA)
6635PL2141950 Jednolity Indeks Materialowy - Uniform Material Index (POL)
9120251 Illinois Tool Works Inc Dba Illinois Tool Works Inc Div Instron, a Division of Illinois Tool Works, Inc. (USA)
M-51 Page-Wilson Corp Measurement Systems (USA)
Related Parts
5120-00-240-1418INTERCHANGEABLE
HANDLE,SOCKET WRENCH
40981
2320-00-289-9094INTERCHANGEABLE
TRUCK,DUMP
5845-00-438-4937INTERCHANGEABLE
DETECTING-RANGING SET SUBASSEMBL
94500
5905-00-500-6555INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
956018-61
5905-00-502-9738INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
956018-84
5930-00-549-0158INTERCHANGEABLE
SWITCH,THERMOSTATIC
B3221-5
6635-00-805-6125INTERCHANGEABLE
TESTER,MATERIAL HARDNESS
94176
2320-00-835-8336INTERCHANGEABLE
TRUCK,DUMP
8358336
2320-00-835-8337INTERCHANGEABLE
TRUCK,DUMP
8358337
2320-00-835-8527INTERCHANGEABLE
TRUCK,DUMP
2320-00-835-8528INTERCHANGEABLE
TRUCK,DUMP
3040-01-059-5806INTERCHANGEABLE
GEARSHAFT,SPUR
912025-1

Frequently Asked Questions

What is NSN 6635-01-053-6482?

NSN 6635-01-053-6482 is a Tester,material Hardness, manufactured by Illinois Tool Works Inc. Dba Buehler Div Buehler, classified under FSC 6635 (No Item Name Available). Status: active.

What are the part numbers for NSN 6635-01-053-6482?

NSN 6635-01-053-6482 has 5 cross-referenced part numbers: 9120251 (Illinois Tool Works Inc. Dba Buehler Div Buehler), 94500 (Illinois Tool Works Inc Dba Illinois Tool Works Inc Div Instron, a Division of Illinois Tool Works, Inc.), 6635PL2141950 (Jednolity Indeks Materialowy - Uniform Material Index), 9120251 (Illinois Tool Works Inc Dba Illinois Tool Works Inc Div Instron, a Division of Illinois Tool Works, Inc.), M-51 (Page-Wilson Corp Measurement Systems).

What NSN replaces 6635-01-053-6482?

There are 12 known substitutes for 6635-01-053-6482: 5120-00-240-1418, 2320-00-289-9094, 5845-00-438-4937 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 9120251?

Key specifications for 9120251: Indicator Type: CIRCULAR DIAL; Vertical Capacity: 4.500 INCHES IN; Special Features: WEIGHT 3.5 LBS, CLAMP TYPE WITH PISTOL GRIP LBS; Indicator Design: DIRECT READING. 11 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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