A feeding apparatus, comprising a screw shaft provided between a fixture member and a movable member relatively movably supported by the fixture member, the screw shaft rotatably supported by one of the fixture member and the movable member, the screw shaft extending in a moving direction of the movable member; a feeding nut connected to the other of the fixture member and the movable member and screwed onto a feeding screw portion of the screw shaft; a supporting member provided at the one of the fixture member and the movable member; a bearing hole formed at a supporting portion of a bolt fixed to the supporting member; a driving unit for transmitting a rotational driving torque to the screw shaft; and an intermediate member (7, 8) supported by the screw shaft and arranged to be rotatable relative to the supporting member, wherein the intermediate member (7, 8) includes a radial sliding contact surface (71a, 73, 76a, 75a, 81a) slidably contacting a radial bearing surface of the supporting portion, a first thrust sliding contact surface (71b, 74, 76b, 82 / 72, 74, 75b, 81) slidably contacting a first thrust bearing surface formed at a first side portion of the supporting portion, and a second thrust sliding contact surface (71b, 74, 76b, 82 / 72, 74, 75b, 81) contacting a second thrust bearing surface formed at a second side portion of the supporting portion; and it further comprises an elastic biasing mechanism (71b, 44, 46, 74, 75, 46, 84) elastically biasing the first and second thrust sliding contact surfaces (71b, 74, 76b, 82 / 72, 74, 75b, 81) of the intermediate member (7, 8) to contact the first and second thrust bearing surfaces in an axial direction of the screw shaft, respectively, and elastically biasing the intermediate member (7, 8) in the axial direction of the screw shaft to a thrust receiving member (43, 76, 83) provided at the screw shaft for assembling the intermediate member (7, 8) and the thrust receiving member (43, 76) onto the screw shaft without a clearance between the intermediate member (7, 8) and the thrust receiving member (43, 76, 83), characterized in that the intermediate member (7, 8) further includes an inner circumferential surface which is compressed to contact an external thread portion of the screw shaft. a screw shaft provided between a fixture member and a movable member relatively movably supported by the fixture member, the screw shaft rotatably supported by one of the fixture member and the movable member, the screw shaft extending in a moving direction of the movable member; a feeding nut connected to the other of the fixture member and the movable member and screwed onto a feeding screw portion of the screw shaft; a supporting member provided at the one of the fixture member and the movable member; a bearing hole formed at a supporting portion of a bolt fixed to the supporting member; a driving unit for transmitting a rotational driving torque to the screw shaft; and an intermediate member (7, 8) supported by the screw shaft and arranged to be rotatable relative to the supporting member, the intermediate member (7, 8) includes a radial sliding contact surface (71a, 73, 76a, 75a, 81a) slidably contacting a radial bearing surface of the supporting portion, a first thrust sliding contact surface (71b, 74, 76b, 82 / 72, 74, 75b, 81) slidably contacting a first thrust bearing surface formed at a first side portion of the supporting portion, and a second thrust sliding contact surface (71b, 74, 76b, 82 / 72, 74, 75b, 81) contacting a second thrust bearing surface formed at a second side portion of the supporting portion; and it further comprises an elastic biasing mechanism (71b, 44, 46, 74, 75, 46, 84) elastically biasing the first and second thrust sliding contact surfaces (71b, 74, 76b, 82 / 72, 74, 75b, 81) of the intermediate member (7, 8) to contact the first and second thrust bearing surfaces in an axial direction of the screw shaft, respectively, and elastically biasing the intermediate member (7, 8) in the axial direction of the screw shaft to a thrust receiving member (43, 76, 83) provided at the screw shaft for assembling the intermediate member (7, 8) and the thrust receiving member (43, 76) onto the screw shaft without a clearance between the intermediate member (7, 8) and the thrust receiving member (43, 76, 83), characterized in that the intermediate member (7, 8) further includes an inner circumferential surface which is compressed to contact an external thread portion of the screw shaft.