Square ER-40 Collet Block For CNC Milling, 1-3/4 x 1-3/4 x 3.2 Inch, Pro Grade Hardened Tool Steel With Tight Flatness And Parallels, Great For Fast Setup And Square, Hex Or Cross Hole Drilling At 60/90/120 Degrees, Upright Use
✔️ Flatness 0.0005 in, supports ER collets, ER nut included, upright use
This square ER-40 collet block is a pro-grade hardened tool steel fixture designed for fast setup on CNC milling machines. It handles parallel, square, hex shapes and cross-hole drilling at 60°, 90°, and 120°, and can be mounted upright for compact setups. Block measures 1-3/4" x 1-3/4" x 3.2" (44.45 x 44.45 x 81.28 mm).
✅ Block dimensions: 1-3/4" x 1-3/4" x 3.2" (44.45 x 44.45 x 81.28 mm)
✅ Hardened tool steel, ground to 0.0005" flatness and parallelism
✅ Upright use ready; ER collets and ER nut included
✅ 1-3/32" through hole for long parts
💡 What is an ER-40 collet block used for in CNC milling? This handy fixture supports fast, repeatable setups and precise workholding on CNC mills. - Provides repeatable clamping for square, hex, and cross-hole work - Enables 60/90/120 degree drilling with accurate alignment - Works upright with standard ER collets and included ER nut
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