Boneham SFT408KE Slip-fixed Drill Bushing 5/8 in Steel

Product Description

The BONEHAM SFT408KE is a slip-fixed drill bushing designed to guide cutting tools such as drill bits and reamers with precision in jig and fixture applications. Built to the SF bushing industry standard, this headed bushing features a 5/8 inch body outside diameter and a 1/2 inch length under head, with a 7/8 inch head outside diameter and a 1/4 inch head height. Constructed from steel for durability in production environments, it accepts an inside diameter tolerance of +0.0001 to +0.0005 inches to maintain tight positional accuracy. The SFT408KE is a renewable bushing, making it serviceable over the life of the jig plate it is pressed into.

Slip-fixed bushings in the SF series are used in tooling fixtures where a removable bushing must be locked in position during the drilling or reaming operation and then released for tool change or part removal. This bushing is compatible with the LS-TW-2 lock screw, which secures it in a liner bushing installed permanently in the jig plate. Typical installation scenarios include production drilling jigs in metalworking, machining, and fabrication shops. The inside diameter designation is Letter Y, making the SFT408KE appropriate for applications requiring that specific bore size.

Key Features

• SF industry code slip-fixed design for removable, lockable positioning in liner bushings
• 5/8 inch body outside diameter with 7/8 inch head outside diameter
• 1/2 inch length under head for standard jig plate thickness applications
• Steel construction for wear resistance in repetitive drilling operations
• Inside diameter tolerance of +0.0001 to +0.0005 inches for precision tool guidance
• Renewable bushing design extends jig service life without full fixture replacement
• Compatible with LS-TW-2 lock screw for secure retention during operation

Compatibility

Designed for use with LS-TW-2 compatible lock screws when seated in a standard liner bushing. Compatible with jig and fixture setups requiring a headed slip-fixed bushing with a 5/8 inch body outside diameter and Letter Y inside diameter designation.

Installation Notes

Installation is performed by tooling or fixture technicians familiar with jig plate assembly. The slip-fixed bushing is inserted into a permanently installed liner bushing in the jig plate and secured with an LS-TW-2 lock screw during use. Ensure the liner bushing bore and the mating jig plate surfaces are clean and free of chips or burrs before seating the bushing. Do not force the bushing into a liner with a mismatched inside diameter or body outside diameter, as this can damage the tolerance interface.