HSS Spiral Flute Hand Reamer

Reamers are precise cutting tools used to enlarge existing holes smoothly and accurately by removing a small amount of metal. Reamer geometry varies widely, which is four or more flutes, spiral or straight, left or right hand cut. Applications: Reamers are used to rough or finish ream predrilled, punched, or die-cast cavities for improved size, roundness, straightness, and surface finish. Though straight flute reamers are still popular, there are many advantages to spiral flute construction. Particularly in smaller sizes, spiral flute reamers can be manufactured more accurately and result in a considerable cost savings.   Fractional Size (in.) Decimal Equiv. (in.) Length Overall(in.) Length of Flute (in.) 1/8 .1250 3 1-1/2 9/64 .1406 3-1/4 1-5/8 5/32 .1562 3-1/4 1-5/8 11/64 .1719 3-1/2 1-3/4 3/16 .1875 3-1/2 1-3/4 13/64 .2031 3-3/4 1-7/8 7/32 .2188 3-3/4 1-7/8 15/64 .2344 4 2 1/4 .2500 4 2 17/64 .2656 4-1/4 2-1/8 9/32 .2812 4-1/4 2-1/8 19/64 .2969 4-1/2 2-1/4 5/16 .3125 4-1/2 2-1/4 21/64 .3281 4-3/4 2-3/8 11/32 .3438 4-3/4 2-3/8 23/64 .3594 5 2-1/2 3/8 .3750 5 2-1/2 25/64 .3906 5-1/4 2-5/8 13/32 .4062 5-1/4 2-5/8 27/64 .4219 5-1/2 2-3/4 7/16 .4375 5-1/2 2-3/4 29/64 .4531 5-3/4 2-7/8 15/32 .4688 5-3/4 2-7/8 31/64 .4844 6 3 1/2 .5000 6 3 17/32 .5312 6-1/4 3-1/8 9/16 .5625 6-1/2 3-1/4 19/32 .5938 6-3/4 3-3/8 5/8 .6250 7 3-1/2 21/32 .6562 7-3/8 3-11/16 11/16 .6875 7-3/4 3-7/8 23/32 .7188 8-1/8 4-1/16 3/4 .7500 8-3/8 4-3/16 25/32 .7812 8-3/4 4-3/8 13/16 .8125 9-1/8 4-9/16 27/32 .8438 9-3/8 4-11/16 7/8 .8750 9-3/4 4-7/8 29/32 .9062 10 5 15/16 .9375 10-1/4 5-1/8 31/32 .9688 10-5/8 5-5/16 1 1.0000 10-7/8 5-7/16 1-1/16 1.0625 11-1/4 5-5/8 1-1/8 1.1250 11-5/8 5-13/16 1-3/16 1.1875 12 6 1-1/4 1.2500 12-1/4 6-1/8 1-5/16 1.3125 12-1/2 6-1/4 1-3/8 1.3750 12-5/8 6-5/16 1-7/16 1.4375 12-7/8 6-7/16 1-1/2 1.5000 13 6-1/2 /* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1