Value Collection 557u 3 Taper Pin Reamer No. 3 Hss

Product Description

The VALUE COLLECTION 557u 3 is a taper pin reamer designed for enlarging, finishing, and shaping tapered holes to accept standard taper pins. Built from high speed steel (HSS) with a bright, uncoated finish, this reamer delivers consistent cutting performance in general-purpose machine shop and maintenance applications. The No. 3 pin size features a small end diameter of 0.1813 inches and a large end diameter of 0.2294 inches, with a spiral flute geometry and right-hand cutting direction. Overall length is 3.6875 inches with a flute length of 2.3125 inches. The 15/64-inch square shank provides positive drive in standard tap wrench or hand tool holders.

This reamer is suited for use in job shops, tool rooms, maintenance departments, and production environments where taper pin holes must be cut or brought to precise finished dimensions. It is appropriate for use in ferrous and non-ferrous metals during hole-shaping and hole-finishing operations. The spiral flute design helps evacuate chips smoothly and reduces chatter during the cut, making it a practical choice for hand reaming as well as low-speed machine reaming setups.

Key Features

• No. 3 taper pin size with 0.1813-inch small end and 0.2294-inch large end diameter
• High speed steel construction for durability across general-purpose cutting tasks
• Spiral flute geometry with left-hand spiral for smooth chip evacuation
• Right-hand cutting direction compatible with standard reaming practice
• Bright, uncoated finish suitable for use with cutting fluids
• Square shank (15/64 inch) provides positive drive and prevents slippage

Compatibility

Designed as a standard taper pin reamer for No. 3 taper pin applications following the 1:48 taper rate standard used in general machine tool and mechanical assembly work.

Installation Notes

Taper pin reamers are typically used by machinists and maintenance mechanics using a tap wrench for hand reaming or a low-speed drill press or mill for machine reaming. Always secure the workpiece firmly before reaming and apply a suitable cutting fluid to extend tool life and improve finish quality. Do not force the reamer through the hole; use steady, controlled feed pressure. Follow applicable shop safety practices when handling sharp cutting tools.