Sammys® 3/8 Swivel Threaded Rod Anchor for Steel, 3/8-16 Rod Size, 1/4-20 x 1 Screw Size - SH DSTR 1 - 8137957, 25/Box When the nut driver spins free on the SWC screw, installation is complete. Warranty requires the use of the appropriate nut driver for installations. Products Specifications Rod Size 3/8-16 Drive Sammys® #14 SH (Orange) Nut Driver (8273910) Mount Style Swivel Substrate Wood, Concrete Diameter 0.3125 Length 1.75 Substrate Fastener Size 5/16 x 1-3/4 Using an SDS 250 carbide tip bit or a HEX RECEIVER with a #250 carbide tip bit, pre-drill the concrete member to a depth of 2” with a hammer/ rotary hammer drill set on impact mode. Efficient: nutsetter ensures smooth, fast and safe installation and effectively reduces screw failure The specially designed nut driver automatically spins freely when the Sammys have been installed completely into the substrate. Warning: warranties are void when drivers are modified. Nut drivers are not used for installation of the Sammy X-Press products A must-have for all Sammys! CRV Hex Nut Driver Set Repair Tool Compatibility: Compatible with any drill and with all Sammys Vertical rod anchors with 1/4 in., Or 3/8 in., Rod fitting Heavy duty: ultra-sturdy steel construction with zinc coating for ultimate quality and corrosion resistance The female Hex inside the driver Fits perfectly with Sammys hex screw heads. 3/4 Nut Driver Sammys Anchors Sammys 8273910#14 Sh Orange Hex Nut Driver For Swivel Rod Anchor Installation, Steel, 2 1/2 In. X 3/4 In What Size Is A #14 Sammys Fasteners Place tip of screw into the pre-drilled hole, turn impact/drill unit to drill mode and begin insertion.