Value Collection SM25N05 Taper Pin Reamer No. 5 Hss

Product Description

The VALUE COLLECTION SM25N05 is a No. 5 taper pin reamer designed to finish and size tapered holes for standard taper pin applications. Manufactured from high-speed steel (HSS) with a bright, uncoated finish, this reamer features a spiral flute geometry with right-hand cutting direction and left-hand spiral direction for smooth chip evacuation. The small end diameter measures 0.2409 inches and the large end diameter measures 0.2994 inches, conforming to the standard No. 5 taper pin sizing. Overall length is 4.3125 inches with a flute length of 2.8125 inches. It is installed by machinists and maintenance professionals in both shop and field settings.

This reamer is suited for hole enlarging, hole finishing, and hole shaping operations where a standard taper pin fit is required. The 1:48 taper rate matches the industry-standard taper pin specification, making this tool appropriate for general-purpose use in manufacturing, repair, and assembly applications across a wide range of materials. The straight shank diameter of 0.3125 inches fits standard drill chucks and collet holders commonly used in drill presses, lathes, and hand-held equipment.

Key Features

• No. 5 taper pin size with 1:48 taper rate for standard taper pin hole finishing
• High-speed steel construction for general-purpose cutting performance
• Spiral flute design with left-hand spiral and right-hand cutting direction for smooth chip flow
• Small end diameter: 0.2409 inches; large end diameter: 0.2994 inches
• Straight shank at 0.3125 inches fits standard chucks and collets
• Bright, uncoated finish suitable for a wide range of workpiece materials

Compatibility

Designed as a general-purpose OEM-style taper pin reamer conforming to No. 5 standard taper pin dimensions with a 1:48 taper rate, compatible with standard drill chucks and straight-shank collet systems.

Installation Notes

This reamer is used by machinists and maintenance technicians in drill press, lathe, or hand-drill applications. Secure the straight shank firmly in the chuck or collet before operation and confirm the workpiece is clamped to prevent movement. Use appropriate cutting fluid for the workpiece material to extend tool life and improve finish quality. Follow standard machine shop safety practices including eye protection and proper speed and feed selection for the material being reamed.