Import 20897 Hand Reamer 1 in 5 Flute Left Hand Spiral

Product Description

The IMPORT 20897 is a 1-inch diameter hand reamer designed for finishing and sizing drilled holes to precise tolerances. Built from steel with a gold oxide finish, this reamer features five collared flutes in a left-hand spiral configuration. The collared flute design helps control chip flow and maintain clean, accurate bore walls during manual reaming operations. With an overall length of 7-3/16 inches and a 4-3/4 inch flute length, it provides the reach and cutting surface needed for through-hole and blind-hole finishing work in metal fabrication, maintenance, and repair applications.

This hand reamer is suited for use in machine shops, maintenance facilities, and field repair environments where precise hole sizing is required. The round shank seats securely in a tap wrench or adjustable handle for controlled, low-speed manual operation. Typical applications include truing up undersized bores in metal components, fitting pins and shafts, and cleaning up holes after drilling in steel, cast iron, and similar materials. Licensed machinists and journeyman-level tradespeople are the primary users.

Key Features

• 1-inch reamer diameter for precise hole finishing to nominal size
• Five collared flutes for controlled chip evacuation and smooth bore finish
• Left-hand spiral direction reduces chatter and improves cutting action on through-holes
• Steel construction with gold oxide finish for corrosion resistance and surface durability
• Round shank compatible with standard tap wrenches and reamer handles
• 4-3/4 inch flute length provides adequate cutting surface for typical bore depths

Compatibility

Designed as an OEM-style replacement or standard hand reamer for use in manual reaming operations on 1-inch nominal diameter holes in ferrous and similar materials.

Installation Notes

Hand reamers are installed and operated by machinists or skilled tradespeople using a tap wrench or T-handle. Always secure the workpiece before applying the reamer, and use cutting fluid to extend tool life and improve surface finish. Apply steady, even rotational pressure in the cutting direction only — never reverse a hand reamer under load, as this can damage the cutting edges. Ensure the starting hole is within the appropriate undersize tolerance for the reamer diameter before beginning.