Feature

●Content - Matched pair 1-2-3 blocks includes 2 blocks.
●Strong And Sturdy - Made of precision-grade tool steel hardened and precise ground on all 6 sides of block, heat treated and case hardened to HRC 58-60.
●Precise - Accuracy with squareness on all sides within 0.0001 per inch.
●Feature - Cross drilling design gives minimum weight and maximum strength.
●Consists of 5 tapped holes 5/16 - 18 for clamping and 6 untapped holes drilled through cross drilling design allows for efficient use of lower weight with maximum strength.


Description

1-2-3 Blocks Matched Pair


Feature:


They are similar to parallels, but more stable & may be used outside a vise.
Precision ground and case hardened to HRC 57-62 on all six sides.
11 each 5/16 inch through holes (5 tapped with 5/16-18 threads and 6 untapped).


Precision:


1-2-3 Blocks Matched Pair
Overall size is within +/- .00003".
Flatness and parallelism are within 0.0003".
Squareness on all sides to within 0.0003".
Pairs are matched to a tolerance of 0.0002".


Package includes:


2 x matched pair blocks (1-2-3)