Spare Thumbscrews

Spare Thumbscrews

This is the thumbscrew used throughout the Stronghold system. The thread is a M5 (5 mm) and it extends for 19 mm (3/4 in) beyond the thumbscrew head.

Item# Description U.S. List Price Quantity
53-2802R Harvard Apparatus Stronghold™ Spare Thumbscrew, Red
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This innovative, flexible, and totally integrated group of clamps, connectors and lattices meets many laboratory requirements. The nylon and glass fiber injection molding process creates an extremely strong corrosion free line of products. The high melting point of 221°C and chemical resistance makes these products the perfect material for lab settings.

Select suffix –R for a red body with white thumb screws and –W for a white body with red thumb screws.

  • Precision injection molded nylon with 30% glass fiber reinforcement provides enormous strength at a great saving in weight. 
  • There is absolutely no corrosion possible. 
  • High melting point of 221°C 
  • Good resistance to chemicals, salt solutions and most solvents. 

Spare Thumbscrew This is the thumbscrew used throughout the Stronghold system. The thread is a M5 (5 mm) and it extends for 19 mm (3/4 in) beyond the thumbscrew head.

Specifications53-2802R
ColorRed
Melting Point221
Screw Diameter English0.2
Screw Diameter Metric5
Screw Length English0.75
Screw Length Metric19