Feature

●Blocks - 23 holes with 5 holes tap to 3/8-16 threads for clamping and 18 untapped holes.
●Material - Made of hardened tool steel and accuracy ground on all six sides; Heat treat and hardness 56 to 60 RC.
●Accuracy - Size within +/- .0001; Flatness and parallelism within .0001; Squareness on all sides is 0.0003 per inch.
●Feature - Cross drilling design allows efficient use of lower weight with maximum strength.
●Application - Used for set-up, layout and inspection jobs.


Description

11

1 x 2 x 3 Inch Blocks 23 Holes

The high grade block set comes with plastic tool box, it is easy to store / carry out and not easy to mess up or lose.

With 23 Holes

Specification

Hardness: HRC 55-60

Parallelism: 0.0002"/1"

Squareness: 0.0001"/1"

Package Include:

1x 123 Blocks1x Hex key, 1x Plastic case, 5x 3/8-16 Stainless steel socket head cap screws

33
44

23 Holes Design

Cross-drilled design on 1-2-3 blocks allows for lighter weight and maximum strength. Used for set-up, layout and inspection jobs.

55

Premium Steel Material

High accuracy block set is made of hardened tool steel and accuracy ground on all six sides. Heat treat and hardness 56 to 60 RC.

How accurate is its size?

I measured it with a digital caliper, and two edges were good, almost perfect, but one edge was slightly worse, but the dimensional accuracy was still around two parts per 10,000, which is pretty accurate for the metal work I do

Do they rust when put in an office environment?

It depends on how high the air humidity you are in. Normally, it is easy to rust without an oil protective layer. We need to brush it regularly for maintenance

Can bolts pass through untapped holes?

Maybe not. The size of the stud is 3/8"-16, while the size of the untapped hole is 9mm, they are different sizes.

What about the texture of the block?

Block is made of 40Cr steel, which is widely used in the machinery industry and has good low temperature impact toughness and low notch sensitivity

Can it be used for woodworking operations?

The 1 x 2 x 3 blocks can be used for both metalworking and woodworking and can be calibrated and measured with a variety of milling machine mounting tools such as altimeters and test indicators