Part Number 12B

National Stock Number:

6635-00-663-4576 6635006634576

Description:

Material Hardness Tester

Item Name Code:

18992

Compliance:

* ITAR Controlled

Carrying Case:

Not provided

Accessory Components And Quantity:

Anvil, flat, approximately 2.500 in. Diameter 1; anvil, raised spot 1; anvil, raised v, for small diameter work 1; anvil, v, for 0.250 in. To 5.000 in. Diameter stock 1; chuck, 0.062 in. Steel ball penetrator w/50 balls 1; cover, telescopic elevating screw 1; cover, vinyl plastic 1; penetrator, diamond c scale 1; weights, for applying 60 kg, 100 kg, 150 kg major loads 1 set; table, testing, 8 in. Diameter 1; test blocks for b scale 2; test blocks for c scale 2

Usage Design:

External

Indicator Type:

Circular dial

Installation Design:

Bench

Test Type:

Rockwell

Unpackaged Unit Weight:

100.000 pounds

Vertical Capacity:

12.000 inches

Horizontal Reach:

5.500 inches

Indicator Reading Type:

Multiple

Indicator Design:

Conversion chart

Functional Classification:

Aa-8.6

Functional Description:

1ball-check determines hardness of relatively soft matl; sphere-conical diamond penetrator (brale) tests harder matl such as tool or spring steel; meas dp penetration of ball or brale check; readings refer to relationship table for ts of matl

Entry Date:

70-08-15

Reference Data And Literature:

Tm 55-405-10 and rockwell hardness tester book

Relationship To Similar Equipment:

Our is regular model; ous superficial model 6635-00-509-5238 makes smaller indentations

Type/model Designation:

Our