Value Collection 556u 1 Taper Pin Reamer No. 1 Hss

Product Description

The VALUE COLLECTION 556u 1 is a No. 1 taper pin reamer designed to enlarge, finish, and shape tapered holes for standard taper pin applications. Manufactured from high speed steel with a bright, uncoated finish, it delivers reliable cutting performance in general-purpose machining environments. The reamer features a straight flute geometry and a right-hand cutting direction. The small end diameter measures 0.1447 inches and the large end measures 0.1798 inches, conforming to the standard No. 1 taper pin taper rate of 1:48. Machinists and tool-and-die technicians are the primary installers of this tool.

This reamer is suited for use in machine shops, maintenance facilities, and production environments where taper pin holes must be accurately sized for pin-fit assemblies. It is appropriate for use in ferrous and non-ferrous materials in general-purpose cutting conditions. The square shank measures 0.1875 inches and is compatible with standard tap wrench and holder setups. The 1.6875-inch flute length and 2.9375-inch overall length make it a compact option for smaller-clearance work.

Key Features

• No. 1 taper pin size with 1:48 taper rate for standard taper pin hole preparation
• High speed steel construction for general-purpose cutting durability
• Straight flute geometry for consistent chip evacuation in through-hole applications
• Right-hand cutting direction for use with standard rotation drivers and tap wrenches
• Bright, uncoated finish suitable for a wide range of workpiece materials
• Square shank provides positive drive engagement and prevents slippage in holder

Compatibility

Designed as a general-purpose OEM-style taper pin reamer for No. 1 taper pin hole applications where the standard 1:48 taper rate is required.

Installation Notes

This tool is installed and operated by machinists or maintenance technicians using a standard tap wrench or compatible square-drive holder. Always secure the workpiece firmly before reaming and apply cutting fluid appropriate to the workpiece material to extend tool life and improve finish quality. Begin reaming from the smaller end and advance with light, consistent pressure to avoid chatter or tool deflection. Do not use this reamer in a powered drill without a properly rated square-to-round adapter and appropriate speed control.