Material: Made of 40Cr steel, which is an alloy steel with good comprehensive mechanical properties and is currently one of the most widely used steels in the machinery manufacturing industry Dimensions and Accuracy: The three sides are 1, 2 and 3 respectively, the tolerance of size is about 0.0001, the squareness is 0.0001/1 Holes: There are 11 holes in the block, 5 are threaded holes for clamping and the rest are unused holes. The 5 threaded holes are 5/16-18 in size, and the other holes are divided into large holes and small holes with diameters of 12.7mm and 8.7mm respectively Feature: Accuracy grade tool steel was quenched and ground on all six sides of the block Design: Through hole design, the two faces are not the same size

1-2-3 11-Hole Matched Accuracy Parallel Blocks, 40Cr Steel

 

Specification:

Hole: 11

Size: 1" x 2" x 3"

Material: 40Cr Steel

Hardness: HRC55-60

Squareness: 0.0001"/1"

Tolerance of Size: ±0.0001"

Thread Holes: 5/16"-18

Untapped Holes: 12.7mm and 8.7mm

Features:  

With 5 threaded holes (5/16"-18) for bolting, drilling, hammering or other purposes

This is a set of 123 parallel blocks containing two that you can use to assemble into other shapes

The parallel blocks are packed in cartons with a layer of rust-proof wax paper, which is easy to clean and has a good surface finish

Accuracy machine block milling machine, very suitable for machinists, woodworking, metal working work, accurate and easy to clean

Package Includes:  

2 x 123 Accuracy Parallel Blocks

Note:

Do not store them in a humid environment, even if you do not use them, you should brush them regularly to prevent rust