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Shars Tool Ultra Precision 1-2-3 Block with 23 Holes
- BRAND: Shars Tool
- OVERALL LENGTH: 2
- PRODUCT WIDTH: 1
- PRODUCT HEIGHT: 3
- NO. OF HOLES: 23
- SQUARENESS: 0.0001
- TAPPED HOLE SIZE: (5) 3/8"-16UNC
WHAT'S INCLUDED
- Five stainless steel socket head cap screws
- One hex key
- Fitted Case
Features
Part# 303-5502
- 5 holes tapped to 3/8-16 and others untapped
- Precision ground on all sides
- Squareness on all sides
- Surface finish
- Oversize to allow nominal tapping
- Squareness: 0.0001"/1"
- Parallelism: ±0.0001"
- Height accuracy in pair: ±0.0001"
SETUP BLOCK SETS
Choose from a range of precision ground finished of setup blocks in an inch and metric of sizes, types and styles to increase productivity in the workplace. Browse our selection of the 123 blocks, 246 blocks, metric blocks and sets for every application.
T.Scott Addington
2025-08-08 17:55:41
Accuracy, value
Daniel Kerley
2025-02-28 12:06:19
These are great quality and accurate.
James Drake
2025-02-05 18:20:40
I bought these blocks to use in making set ups on my mill. I wanted to run 5/8" bolts through the non- threaded holes. Those holes all had significant burrs so 2 hours and several dozen sanding drums on my Dremel ... the holes are clean. I expected this for the inexpensive typical Chinesium stuff that it is. Now they are right and will serve me well in my hobby shop.
Theodore Shasta
2025-01-17 14:23:34
The title says it all: well made and accurate.
li'l bamboo
2025-01-04 11:56:45
I use these to make sure I have square corners on sub-assemblies I make. I also use them as weights to help in the gluing process when clamps don't seem to work at all.I'm a model builder and I need a square joint vertical or horizontally and these are great in helping me make those joints.
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