Value Collection MSC-04916136 Straight Flute Tap 5/8-11

Product Description

The VALUE COLLECTION MSC-04916136 is a straight flute tap designed to cut 5/8-11 UNC internal threads in a left-hand direction. Built from high-speed steel with a bright/uncoated finish, this tap delivers reliable thread cutting in a range of workpiece materials. The taper chamfer eases entry and distributes cutting load across the leading threads, making it well suited for through-hole applications. With 4 flutes and an H3 thread limit, it holds tight dimensional tolerances consistent with a 3B class of fit. Machinists and toolroom professionals rely on this style of tap for production and maintenance threading operations where left-hand thread orientation is required.

This tap is used in machine shop, toolroom, and maintenance environments where left-hand 5/8-11 UNC threads must be cut. Left-hand taps are specified when the application demands reverse-thread fastening to prevent loosening under rotational loads, such as in rotating shaft assemblies, specialized fixtures, and certain mechanical linkages. The taper chamfer style makes it appropriate for through-holes where full thread engagement is needed along the usable thread length of 1-13/16 inches. It is typically run in a drill press, tapping head, CNC machining center, or by hand with a tap wrench.

Key Features

• 5/8-11 UNC thread form with left-hand thread direction for reverse-thread applications
• Taper chamfer distributes cutting forces across multiple leading threads for smooth entry
• 4-flute design provides good chip clearance and tap rigidity
• H3 thread limit ensures dimensional accuracy for 3B class of fit tolerances
• High-speed steel construction offers toughness across a broad range of workpiece materials
• Bright/uncoated finish suitable for use with cutting fluid in standard threading operations

Compatibility

Designed as a standard replacement or production tap for any application requiring a left-hand 5/8-11 UNC straight flute taper tap with a 3B class of fit.

Installation Notes

This tap is installed by qualified machinists or toolroom technicians using appropriate tapping equipment. Always secure the workpiece firmly and ensure the tap is aligned perpendicular to the drilled hole before engagement. Use a suitable cutting fluid for the workpiece material to extend tap life and improve thread quality. Because this is a left-hand tap, rotation direction must be reversed relative to standard right-hand tapping procedures.