Abstract: A pedestal (18) for an access floor assembly (10), the pedestal (18) comprises a stand portion and a head portion. The stand portion has a base plate (21) for resting upon a sub-floor (20), and a stem (22) extending upwardly therefrom. The head portion has a platform (24) and a threaded shaft (26) extending downwardly therefrom. The pedestal (18) includes a lockable nut (28) which has a thread (29) adapted to screwably engage the threaded shaft (26), wherein the lockable nut (28) has at least one detent (30) to lock with the stem (22) in order to prevent the rotation of the lockable nut (28) when abutted against the stem (22).

Abstract: A bolt lock assembly (40) and a nut lock assembly (60) are provided that respectively include a collar member (16) that is moveable in opposite axial directions in a counterbore (12) in an object (4) and is biased outwardly therefrom by a coiled spring (20). Counterbore (12) has at least one slot (14) extending radially outwardly therefrom and collar member (16) has at least one locking member (18) extending therefrom having a portion registerable with and remaining in slot (18) and a portion adapted to engage locking surfaces on a bolt head (6) of bolt (2) or a nut (24) when collar member (16) is urged outwardly from counterbore (12) to provide the locked engagement therebetween.