Yes, this product have a threaded connector.
We are assuming if you have the "rest of the kit" you may have purchased from another person who purchased the complete kit. The use of this length center pole may be able to be used but this depends on the height of your installation from finished floor to finished floor. These would only allow an installation to approximately 80" total. Though not offered currently for retail sales, we can possibly assist you with the purchase of 49" center poles from our small parts inventory. Please contact our Customer Sales & Support team via our toll free telephone number at (888) 782-4758 and our team will be happy to discuss this option and if it is viable for your planned project. You can asked to speak with the Managing Director of ARKE directly regarding this matter as this would be an exception to our normal policy.
The Center Pole (# K00000) is an accessory component that is used to either extend the height of the staircase installation beyond the maximum height of the standard kit of 120" or to reduce the height of the installation below the minimum height of 99" of the standard kit. This component is not visible in the installation as it is covered by the metal components of the tread supports when installed. Should you have additional questions, please contact our Customer Sales & Support team via our toll-free telephone number at (888) 782-4758.
Eric, interesting question. You can actually accomplish the installation to 79 3/4" by using two of the #K00000 32" Center poles with the standard kit. These two 32" center poles would be used instead of the two 49" center poles included in the standard kit. You would use 8 stair treads plus the landing platform and your rise between each tread would be approximately 8.8". Should you have further questions or need additional assistance, please contact our Customer Sales & Support team via our toll free telephone number at (888) 782-4758 and our team will be happy to assist.
If your installation is 99" or less, you will need to purchase the K00000 32" center pole to be used in replacement of one of the 49" center poles in the standard staircase kit. The math table to calculate the number of spacers to use between is tread is included in the installation instructions. Should you need assistance or have further questions, please contact our Customer Sales & Support team via our toll free telephone number at (888) 782-4758 and our team will be happy to assist.