Description 40MFA3920 – 40 Series M8 x 1.25 Economy T-Nut These parts are 100% equivalent to the following manufacturers: 80/20 #3838 or #40-1981 T-SLOTS #651367 Frame-World #EF-2C McMaster #5537T688 These Economy T-Nuts are a VERY economical way to bolt items to your 40 Series (40mm) T-Slotted Aluminum Extrusions. Made of carbon steel, bright zinc plated and will fit in all 40 Series extrusions. They are loaded from the end of the extrusion only.
