Value Collection SM24N12 Taper Pin Reamer No. 12 Hss

Product Description

The VALUE COLLECTION SM24N12 is a No. 12 taper pin reamer machined from high-speed steel (HSS) for enlarging, finishing, and shaping tapered pin holes in metal components. It features a straight flute geometry and a bright, uncoated finish suitable for general-purpose reaming applications. The small end diameter measures 0.842 inches and the large end measures 1.05 inches, with a taper rate of 1:48 consistent with standard taper pin specifications. The tool runs a 10-inch flute length on a 13.625-inch overall length. Machinists and tool-and-die professionals install this reamer in manual or CNC setups to bring tapered bores to final fit for taper pin assemblies.

This reamer is suited for job shop, maintenance, and production environments where No. 12 taper pin holes require accurate sizing. It handles hole enlarging, hole finishing, and hole shaping operations on steel, cast iron, and similar ferrous materials. The right-hand cutting direction makes it compatible with standard right-hand spindle rotation on drill presses, lathes, and milling machines. The straight shank at 0.875 inches diameter seats directly in a standard drill chuck or collet without an adapter.

Key Features

• No. 12 taper pin size with a 1:48 taper rate matching ASME taper pin standards
• High-speed steel construction provides durability across general-purpose ferrous reaming
• Straight flute design for consistent chip evacuation during through-hole reaming
• Bright uncoated finish for use with cutting oil or coolant where required
• Right-hand cut, straight shank compatible with standard drill chucks and collets
• 10-inch flute length accommodates workpieces requiring extended reach

Compatibility

Designed as a general-purpose replacement or production reamer for applications requiring a No. 12 taper pin hole finish with a 1:48 taper rate. Suitable for use in drill presses, lathes, and milling machines equipped with a chuck or collet accepting a 0.875-inch straight shank.

Installation Notes

A qualified machinist should secure the workpiece firmly before reaming to prevent movement during the cutting pass. Ensure the spindle and reamer axis are properly aligned to avoid bell-mouthing the bore. Apply an appropriate cutting fluid for the workpiece material to extend tool life and achieve the specified finish. Remove all chips from the bore and inspect the taper fit with the actual taper pin before final assembly.