Value Collection 558u 5 Taper Pin Reamer Size 5 Hss

Product Description

The VALUE COLLECTION 558u 5 is a size 5 taper pin reamer designed for enlarging, finishing, and shaping tapered holes to accept standard taper pins. Built from high-speed steel with a bright, uncoated finish, this reamer features helical flutes with a left-hand spiral and a right-hand cutting direction — a combination that reduces chatter and produces a smoother bore surface. The small end diameter is 0.2409 inches and the large end diameter is 0.2994 inches, with a taper rate of 1:48. Overall length is 4.3125 inches with a flute length of 2.8125 inches. The 0.3125-inch straight shank fits standard drill chucks and machine tool holders used in general-purpose machining operations.

This reamer is suited for general-purpose machine shop, maintenance, and toolroom applications where a size 5 taper pin fit is required. Typical uses include preparing holes in shafts, hubs, and mechanical assemblies that are joined or positioned with standard taper pins. It is used in both manual drilling operations and light machine work by machinists, tool and die makers, and maintenance technicians working to hand-fit or replace taper pin connections in industrial equipment.

Key Features

• High-speed steel construction for durability in general-purpose reaming applications
• Helical flute geometry with left-hand spiral reduces chatter and improves surface finish
• Right-hand cutting direction compatible with standard drill press and lathe setups
• 1:48 taper rate matches the industry-standard taper pin specification for size 5
• Bright, uncoated finish suitable for use with a variety of cutting fluids
• Straight shank fits standard drill chucks without special toolholding adapters

Compatibility

Designed as an OEM-style replacement or standard toolroom reamer for size 5 taper pin applications following industry-standard 1:48 taper pin geometry.

Installation Notes

Taper pin reamers are installed and operated by machinists and maintenance technicians using a drill press, lathe, or hand brace. Always secure the workpiece firmly and apply an appropriate cutting fluid to extend tool life and improve bore finish. Start with a pilot hole sized below the small end diameter before reaming to final size. Do not force the reamer through the material — steady, controlled feed pressure produces the most accurate and cleanest tapered bore.