Another in a long line of TMC innovations, our 75 Series Breadboards minimize both weight and cost. A patented manufacturing technique allows us to form countersunk, tapped holes in a thin top skin of stainless steel. The holes are not drilled or punched, but fabricated in a way that effectively “thickens” the skin in a small ring around the threads. No inserts are used and the tapped holes are 3 threads deep.

These tops have relatively high levels of rigidity, as they utilize our standard steel core. They are ideal when light loads are anticipated and low weight and/or cost are the most crucial factors.

This lightweight design is available from stock in the sizes listed below. A full range of sizes and materials is available on a custom basis.


  • Ultra-lightweight design weighs less than 9 lbs/ft2 (44 kg/m2).
  • Ferromagnetic Stainless steel top and bottom skins.
  • Aluminum and carbon steel versions available.
  • Very low prices, even in low quantity.
  • Formed holes are countersunk and tapped 3 threads.
  • Formed holes in top skin add to rigidity.
  • CleanTop® individual cups under each hole make the core spill-proof.

How To Order

  • Choose the size of the top that you need from the chart below.
  • Choose the specific size breadboard that you require.
  • Contact AutoMate Scientific for purchasing and shipping information.

675 Series Lightweight Breadboards Ordering Chart


Note: Only the most common stocked sizes are listed. A full range of sizes is available.


Steel honeycomb, closed-cell, 0.010 in. (0.2mm) thick foil

Core Shear Modulus
275,000 psi
(19,300 kg/cm2)

Core Cell Size

Core Density
13.3 lb/ft3
(230 kg/cm3)

± 0.005 in.

Top Skin
430 series stainless steel, 0.075in.
(2 mm) thick

Bottom Skin
400 series stainless steel, 0.075in.
(2 mm) thick

High-pressure laminate

Tapped Holes
Backed by individual CleanTop cups; 3 threads