George H. Seltzer & Co.
 
Phone: 800-445-4101
610-532-2322
Fax: 610-532-3024
E-mail: zip@zipbolts.com
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ENGLISH SIZES(inch)
  • T-Slot Bolts
  • Hex Nuts
  • Flange Nuts
  • Flat Steel Washers
  • Coupling Nuts
  • T-Slot Nuts
  • Steel Studs (Double End)
  • Steel Set-Up Wedges
  • Plain Strap Clamps(Forged)
  • U-Clamps
  • Gooseneck Clamps
  • Finger Clamps
  • Adjustable Strap Clamps
  • Eye Bolts (Shoulder)
  • Four-Sided Step Blocks
  • Serrated Step Blocks
  • Serrated Step Clamps (Machined)
  • Plain Strap Clamps (Machined)
METRIC SIZES
  • T-Slot Bolts
  • T-Slot Bolts with Nut and Washer
  • Fixture Nuts
  • Collar Nuts
  • Flat Steel Washers
  • Extension Nuts
  • T-Slot Nuts
  • Steel Studs (Double End)

Understanding DIN 787 T-Slot Bolts and Their Industrial Uses

t-slot bolts and nuts manufacturers
T-Slot Bolts
May 30, 2026 Bob Seltzer

Anyone who has spent real time around a machine table knows this already: the setup is everything. A solid cut starts long before the spindle turns. If the workpiece shifts even slightly under load, tolerances disappear fast, tooling suffers, and the whole operation turns into a headache nobody in the shop wants to deal with […]

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How Professional Builders Use T Slot Bolts for Faster Assembly in Machine Tool Setups

t-slot bolt
T-Slot Bolts
May 29, 2026 Bob Seltzer

Speed matters in a machine shop, but speed without control is useless. Professional builders know that. Every setup has to lock down cleanly, stay aligned under pressure, and come apart without turning into a fight twenty minutes later. That is why t-slot bolts still hold their place in machining environments where precision and efficiency carry […]

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Why Set-Up Wedges Are Essential for Accurate Clamping

Set-Up Wedges
Set-Up Wedges
May 19, 2026 Bob Seltzer

You can have the machine ready, the fixture in place, and the Set-Up looking solid. But if the workpiece is not properly supported underneath, accuracy starts falling apart fast. That is where a forged steel Set-Up wedge matters. At George H. Seltzer & Co., forged steel set-up wedges are built for workholding applications where positioning, […]

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Top 5 Mistakes to Avoid When Using T-Slot Nuts

T-Slot Nuts
T-Slot Nuts
May 19, 2026 Bob Seltzer

Good results start with proper workholding. If the setup moves, even slightly, accuracy disappears fast. Surface finish suffers. Measurements drift. Tools wear unevenly. Most of the time, the machine is not the problem. The setup is. Here’s the thing. T-slot nuts are one of the most important parts of a machine table setup, even though […]

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George H. Seltzer & Co.
P.O.Box 26, 103 Ridley Avenue | Folsom, PA 19033-0026
800-445-4101 - 610-532-2322 - Fax: 610-532-3024 - E-mail: zip@zipbolts.com
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