Value Collection SM24N40 Taper Pin Reamer 4/0 Hss

Product Description

The VALUE COLLECTION SM24N40 is a taper pin reamer designed for enlarging, finishing, and shaping tapered holes to accept standard taper pins. Made from high-speed steel with a bright, uncoated finish, this reamer features a straight flute and straight shank configuration suited for general-purpose machine shop and maintenance work. The 4/0 pin size corresponds to a small end diameter of 0.0869 inches and a large end diameter of 0.1142 inches, with a taper rate of 1:48. Overall length is 2.3125 inches and flute length is 1.3125 inches. Machinists, toolmakers, and maintenance technicians install this tool in manual or machine setups to produce clean, accurately sized tapered holes.

This reamer is used in applications requiring precise hole finishing for taper pin fastening, including mechanical assemblies, shafts, linkages, and fixture work. It is suited for light production and maintenance environments where a 4/0 taper pin size is specified. The right-hand cutting direction is compatible with standard drill press and lathe spindle rotation. The 0.1250-inch straight shank fits common collets and chucks used in machine shop toolholding setups.

Key Features

• High-speed steel construction for general-purpose cutting in ferrous and non-ferrous materials
• 4/0 taper pin size with 1:48 taper rate for precise pin hole fitment
• Small end diameter of 0.0869 inches, large end diameter of 0.1142 inches
• Straight flute geometry provides clean cutting action in through-holes
• Bright, uncoated finish suitable for standard cutting fluid use
• Right-hand cut, compatible with standard spindle rotation

Compatibility

Designed as a general-purpose taper pin reamer for 4/0 pin size applications. Fits collets and chucks accepting a 0.1250-inch straight shank. Intended for use with standard 4/0 taper pins per ASME B18.8.2 or equivalent specifications where referenced in the assembly.

Installation Notes

Machinist installation is required. Secure the shank firmly in an appropriate collet or drill chuck before operation and verify runout before cutting. Apply cutting fluid appropriate for the workpiece material to extend tool life and improve finish quality. Always deburr the hole entry and exit after reaming. Follow applicable shop safety procedures and machine guarding requirements during use.