The Hillman Group 180286 Keps Lock Nut, 5/16-Inch by 18-Inch, 100-Pack Home office furniture 5 x Ø6mm heat-pipe with

5 x Ø6mm heat-pipe with aluminum fins for excellent heat conducting efficiency

15 pounds (per shelf/bookcase top)

while the handy side half shelf at the bottom offers additional storage space for magazines or books

adding an extra layer of protection for your tools

corrosion-resistant aircraft-grade aluminum with a highly durable black powder coat finish

The Hillman Group 180286 Keps Lock Nut, 5/16-Inch by 18-Inch, 100-Pack Home office furniture 5 x Ø6mm heat-pipe withThe Locking Occurs When The Washer Is Tightened Against The Bearing Surface For Use In Low Load Assemblies And Ensure A Lasting Hold For Any Project Zinc Plated From The Brand Name: The Hillman Group