Value Collection SM25N08 Taper Pin Reamer Size 8 Hss

Product Description

The VALUE COLLECTION SM25N08 is a Number 8 taper pin reamer designed for enlarging, finishing, and shaping tapered holes to accept standard taper pins. Built from high-speed steel (HSS), it delivers the hardness and edge retention needed for consistent, accurate cuts in metal workpieces. The reamer features a spiral flute geometry with a right-hand cut and measures 7.1875 inches overall, with a 5.1875-inch flute length and a straight shank diameter of 0.4375 inches. A bright, uncoated finish keeps it ready for use out of the box. Machinists, tool-and-die workers, and maintenance mechanics reach for this reamer when fitting taper pins in shafts, collars, and mechanical assemblies where a precise interference fit is required.

This reamer is suited for general-purpose shop and field use wherever Number 8 taper pin holes must be cut or cleaned up to final size. Typical applications include machine tool repair, power transmission component assembly, and precision fixture work. The small end diameter of 0.3971 inches and large end diameter of 0.505 inches conform to the standard Number 8 taper pin specification at a taper rate of 1:48, making it a direct match for that pin size across a wide range of ferrous and non-ferrous workpiece materials.

Key Features

• High-speed steel construction provides hardness and wear resistance for extended tool life in general-purpose cutting
• Spiral flute design with left-hand spiral direction promotes smooth chip evacuation during right-hand cutting
• Number 8 taper pin size with a 1:48 taper rate matches standard taper pin specifications exactly
• Bright, uncoated finish requires no additional prep before use
• Straight shank at 0.4375 inches diameter fits standard drill press and machine tool chucks
• 5.1875-inch flute length provides ample cutting surface for deep or through-hole applications

Compatibility

Designed as a standard Number 8 taper pin reamer conforming to the 1:48 taper rate; fits any setup requiring a Number 8 taper pin hole in ferrous or non-ferrous workpieces.

Installation Notes

This tool is installed and operated by machinists or maintenance mechanics using a drill press, milling machine, or manual tap wrench with a straight-shank collet or chuck. Secure the workpiece firmly before reaming and apply cutting fluid appropriate to the workpiece material to extend tool life and improve surface finish. Always advance the reamer slowly and steadily; forcing the cut can deflect the tool and produce an out-of-tolerance hole. Inspect the reamer edge for wear or chipping before each use and replace if cutting performance degrades.