Taytools 1-2-3 Blocks Matched Pair (2 Each) 23 Hole Hardened Steel

Description

123 blocks are used for machine set up, layout and, inspection. Each block contains 23 each 3/8 inch through holes (5 holes tapped with 3/8 inch x 16 TPI threads and 18 untapped). Made of hardened tool steel (RC 56-60) and precision ground on all six sides. Overall size within +/- 0.0001. Flatness and parallelism within 0.0001. Squareness on all sides to within 0.0003 per inch. Pairs are matched to a tolerance of 0.0002. Two (2) pieces per set