No 1 3J Workblock

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Current Stock:
size: 6.25 W × 5.38 H × 6.25 L
Weight: 19.50 LBS
Shipping Cost: Calculated at Checkout


  • Above dimensions are approximate shipping box sizes
  • Actual part dimensions: 4.00"W x 4.625"H x 5.50"L
  • New top-mount style requires 3/8"-16 SHCS (not included)
  • Clamp force: 3500 pounds
  • Dead length manual clamping
  • TIR .0003 O.D. of sleeve to taper
  • Fully CNC machined cast iron body
  • Keyed (11/16) for mounting on slotted tables. See VISE AND WORKBLOCK KEY  chart for your application
  • Easily clamped in a vise, machine table, or fixture plate
  • Accepts 3J collet stop kit 3J ODT SK (OD) or 3J IDT SK (ID) threads.
  • Machined in clamp ledge accepts VISE AND WORKBLOCK CLAMP No. WC 688___
  • Low profile and compact design
  • Weight: 19.5 lbs.
  • Quality made in USA

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