A seat assembly , comprising: a seat frame ; a track ; and a track lock assembly slidably connecting the seat frame to the track , the track lock assembly comprising: a track foot body configured for sliding translation within the track , a pin member having a first end configured for threaded engagement with the track foot body and a grip portion disposed at a second end and a plunger configured for sliding engagement with the pin member between the first end and the second end and for locking engagement with the track lock assembly , characterised in that the track lock assembly further comprises a first nut threaded onto the pin member and configured to lock the plunger into one of a plurality of access openings within the track and configured to receive the plunger , and wherein the track lock assembly further comprises a second nut threaded onto the pin member and configured to jam lock the first nut, and wherein the first nut and the second nut include a knurled surface configured for threading both the first nut and the second nut along the pin member by hand; wherein the track foot body includes an anchor section configured to slidably receive the plunger and an aperture configured to receive the first end of the pin member; and wherein the first end of the pin member is threaded into the anchor section of the track foot body . a seat frame ; a track ; and a track lock assembly slidably connecting the seat frame to the track , the track lock assembly comprising: a track foot body configured for sliding translation within the track , a pin member having a first end configured for threaded engagement with the track foot body and a grip portion disposed at a second end and a plunger configured for sliding engagement with the pin member between the first end and the second end and for locking engagement with the track lock assembly , characterised in that the track lock assembly further comprises a first nut threaded onto the pin member and configured to lock the plunger into one of a plurality of access openings within the track and configured to receive the plunger , and wherein the track lock assembly further comprises a second nut threaded onto the pin member and configured to jam lock the first nut, and wherein the first nut and the second nut include a knurled surface configured for threading both the first nut and the second nut along the pin member by hand; wherein the track foot body includes an anchor section configured to slidably receive the plunger and an aperture configured to receive the first end of the pin member; and wherein the first end of the pin member is threaded into the anchor section of the track foot body . a track foot body configured for sliding translation within the track , a pin member having a first end configured for threaded engagement with the track foot body and a grip portion disposed at a second end and a plunger configured for sliding engagement with the pin member between the first end and the second end and for locking engagement with the track lock assembly , characterised in that the track lock assembly further comprises a first nut threaded onto the pin member and configured to lock the plunger into one of a plurality of access openings within the track and configured to receive the plunger , and wherein the track lock assembly further comprises a second nut threaded onto the pin member and configured to jam lock the first nut, and wherein the first nut and the second nut include a knurled surface configured for threading both the first nut and the second nut along the pin member by hand; wherein the track foot body includes an anchor section configured to slidably receive the plunger and an aperture configured to receive the first end of the pin member; and wherein the first end of the pin member is threaded into the anchor section of the track foot body . <EOS>