Reamers Specifications

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Reamer Specifications

Size Units:

Your choices are...

English / Fractional

The reamer is designed with base units of inches or fractions of an inch.

Metric

The reamer is designed with metric base units such as millimeters or centimeters.

Wire Gauge

The reamer is fashioned in standard wire gauge sizes, designated 1 to 80.

Letter Size

The reamer sets in standard letter designation sizes from A to Z.

Other

Other unlisted size series or units.

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All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

Cutting Diameter:

This refers to the full tool cutting diameter.

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User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

Set Size Range:

The set size rang refers to the smallest-to-largest reamer size included in the set.

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User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.

Reamer Type

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Chucking Reamer

Chucking reamers are the most common reamer type, and are used for general-purpose reaming. Chucking reamers typically come with a straight shank. Standard sizes include all common English and metric sizes, wire gauge, and number / letter designations.

Jobber Length Reamer

Jobber length reamers are common industrial configurations that have somewhat longer flutes and overall length than standard chucking reamers.

Taper Pin Reamer

Taper pin reamers are ground with a standard taper, most commonly 1/4" per foot, for fitting pins with the standard taper.

Taper Pipe Reamer

Taper pipe reamers are used to prepare holes for being tapped with a standard pipe thread. NPT standard tapers are 3/4" per foot.

Hand Reamer

Hand reamers are tools for manual reaming; they are typically equipped with a handle.

Bridge Reamer

Bridge reamers are heavy-duty reamers used for construction, shipbuilding, and other heavy industrial applications. They are often used for alignment of holes for rivets or other structural fasteners. Bridge reamers are named for their use on the structural steel of bridges and other structures.

Car Reamer

Car reamers are somewhat shorter than bridge reamers, but are also meant for heavy-duty use in structural work. They are named for their use for hole alignment and repair in railroad cars.

Morse Taper Reamer

The reamer is tapered with a standard Morse taper.

Repair Taper Reamer

Repair reamers are commonly used in utility and maintenance applications.

Shell Reamer

Shell reamers mount onto an arbor; the mounting hole often has a taper to match the arbor. Shell reamers are often interchangeable so that the arbor can remained chucked; one arbor can typically accommodate many sizes of shell reamers.

Deburring Reamer

Deburring reamers are designed to remove the burrs left from other cutting operations, such as drilling or milling.

Step Reamer

Step reamers have incrementally increasing diameter steps.

Center Reamer

Center, multi-flute reamers are used to create or finish countersinks in holes; they often come in standard angles to accommodate countersinks for flat head machine screws.

Dowel Pin Reamer

Dowel pin reamers are slightly undersized for finishing holes into which dowel pins will be pressed. They typically range from 0.0005" to 0.0020".

Extended Length Reamer

Extended length reamers are extra long flutes for deep hole reaming.

Reamer Blank / Semi-Finished

Reamer blanks are used for grinding standard or specialized cutting edges and flute geometry.

Other

Other unlisted, specialized, or proprietary reamers.

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Product Packaging

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Individual Reamer

Reamer Set

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Flute Style:

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Straight

Straight flutes are common industrial configurations that are parallel with axis of hole being reamed.

Spiral

Spiral or helical flutes can aid in finish quality and chip evacuation in deep holes; they are also used where the hole is not continuous.

High Helix

High helix flutes are specialized to increase shear cutting and enhance chip removal.

Right Hand Spiral / Helix

Flutes are spiraled in the right-hand direction.

Left Hand Spiral / Helix

Flutes are spiraled in the left-hand direction.

Other

Other unlisted, specialized, or proprietary flute geometry.

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Adjustable

Adjustable reamers are built for easy, frequent size adjustment, typically by tightening / loosening of sizing screws.

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"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

Expandable

Expandable reamers can be infrequently adjusted to compensate for flute wear. Unlike adjustable reamers, they are not meant to cover a series of hole sizes, but can be reset to a precise diameter. Compensation adjustment is typically on the order of 0.010"

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"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

NAS Specifications

Reamers are manufactured in accordance with National Aerospace Standards (NAS).

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"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

Coolant Channel

Coolant channels direct coolant feed at or near the cutting edges of the reamer.

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"Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.

Tables:

Reference for letter and number drill size equivalents.

Number	Decimal	Number	Decimal	Number	Decimal	Letter	Decimal
80	0.0135	53	0.0595	26	0.1470	A	0.2340
79	0.0145	52	0.0635	25	0.1495	B	0.2380
78	0.0160	51	0.0670	24	0.1520	C	0.2420
77	0.0180	50	0.0700	23	0.1540	D	0.2460
76	0.0200	49	0.0730	22	0.1570	E	0.2500
75	0.0210	48	0.0760	21	0.1590	F	0.2570
74	0.0225	47	0.0785	20	0.1610	G	0.2610
73	0.0240	46	0.0810	19	0.1660	H	0.2660
72	0.0250	45	0.0820	18	0.1695	I	0.2720
71	0.0260	44	0.0860	17	0.1730	J	0.2770
70	0.0280	43	0.0890	16	0.1770	K	0.2810
69	0.0292	42	0.0935	15	0.1800	L	0.2900
68	0.0310	41	0.0960	14	0.1820	M	0.2950
67	0.0320	40	0.0980	13	0.1850	N	0.3020
66	0.0330	39	0.0995	12	0.1890	O	0.3160
65	0.0350	38	0.1015	11	0.1910	P	0.3230
64	0.0360	37	0.1040	10	0.1935	Q	0.3320
63	0.0370	36	0.1065	9	0.1960	R	0.3390
62	0.0380	35	0.1100	8	0.1990	S	0.3480
61	0.0390	34	0.1110	7	0.2010	T	0.3580
60	0.0400	33	0.1130	6	0.2040	U	0.3680
59	0.0410	32	0.1160	5	0.2055	V	0.3770
58	0.0420	31	0.1200	4	0.2090	W	0.3860
57	0.0430	30	0.1285	3	0.2130	X	0.3970
56	0.0465	29	0.1360	2	0.2210	Y	0.4040
55	0.0520	28	0.1405	1	0.2280	Z	0.4130
54	0.0550	27	0.1440

Construction



	Your choices are...
	Solid Construction		The drill is manufactured from a solid piece of material.
	Bonded Tips		Cutting tips or edges, such as carbide tips, are permanently bonded on a steel shaft.
	Holder and Inserts		The drill is constructed with a holder with attachable inserts; these inserts typically bolt onto the holder and are replaceable when the cutting edges are worn.
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	Material
	Your choices are...
	High Speed Steel		High speed steel is a cost-efficient cutter material used for general application metal machining.
	Cobalt		Cobalt steel reamers are somewhat harder than high-speed steel and are often used for drilling in stainless steel and other alloys.
	Carbide		Carbide grades are much harder than high-speed steel, and therefore last longer and wear less. Several coatings are available to lengthen cutter life.
	Diamond / PCD		Industrial diamond grades are used for longevity, and sometimes for special applications such as very high-speed cutting; examples include polycrystalline diamond (PCD)
	Other		Other unlisted or specialized cutter material.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.

	Coating / Finish:
	Your choices are...
	None		The reamer has uncoated cutting edges.
	Coated		Reamer has a coating to assist in cutting lubricity and/or add abrasion resistance for longer tool life.
	TiN		Titanium nitride is widely used general-purpose tool coating and in most cutting operations. It provides good adhesion and low friction; it is typically pale gold in color.
	TiCN		Titanium carbon nitride provides good hardness and smoothness, and is often used on drills and reamers for castings and nonferrous materials. This coating is often bluish-gray in color.
	TiAlN		Titanium aluminum nitride coatings form an oxide-like layer on tool substrates. They are typically used in high-speed or high heat dry-cutting operations; they are commonly bronze in appearance.
	AlTiN		Aluminum titanium nitride is a variation of TiAlN with increased hardness and abrasion resistance. It is typically dark gray or black in color.
	Al₂O₃		Aluminum oxide applications include high-speed cutting or turning of abrasive materials, such as ductile irons. It is also used as an additive for other coatings due to its abrasion and temperature resistance. Depending on its grade, aluminum oxide can range from gold to black in appearance.
	CrN		Chromium nitride provides good corrosion and oxidation resistance. It is commonly used for plastics processing and cutting. Low friction also makes it useful for drawing, forming, and extruding tools.
	ZrN		Zirconium nitride is typically used on nonferrous materials such as aluminum, brass, nickel alloys, plastics, etc., but can have applications for some iron and stainless steel grades. This coating provides good abrasion resistance and lubricity and is pale gold in appearance.
	Black Oxide		Black oxide is a general-purpose coating for maintenance and utility drills with some corrosion resistant properties.
	Bronze		Bronze is a general-purpose, abrasion resistance coating.
	Diamond		Thin diamond films are applied to cutters to increase life and abrasion resistance.
	Other		Unlisted, specialized, or proprietary coating.
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	Shank Type
	Your choices are...
	Straight Shank		The drill shank is the same diameter as the cutting edges; this includes holders with straight shanks.
	Tapered Shank		The shank is tapered for mounting in a standard drilling machine holder.
	Reduced Shank		The shank mounting diameter is reduced from cutting diameter, often for mounting in a smaller or standard-size chuck.
	Hex Shank		The mounting portion of shank is hexagonal in shape for positive-hold mounting in a chuck.
	Square Shank		Square shanks are used for handles, wrenches, or vise engagement.
	Threaded Shank		The shank is threaded for screwing into the mounting arbor.
	Other		Other unlisted, specialized, or proprietary shank style.
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Reaming Application



	Your choices are...
	General Purpose		The reamer is designed for a variety of materials and general applications.
	Aluminum		Aluminum is a widely used machining material, combining generally good machinability, good strength-to-weight ratio, non-magnetic properties, and corrosion resistance. It is available in many grades for different applications.
	Bronze / Brass / Copper		Many different grades of copper and its alloys are used in electrical, plumbing, fluid power, decorative, and other applications. Machinability and properties vary widely with the various alloys.
	Ceramic		Ceramics are a broad class of bonded materials noted for good thermal properties and wear and abrasion resistance.
	Hard / Hardened Metals		This category includes hard and ultra hard materials such as carbide grades and hardened steels.
	Plastic		Reamers designed for machining of plastics and polymers can include specialized rake and relief angles, chip clearance geometry, and coatings for this purpose.
	Steel		Steel refers to a broad category of alloys containing primarily iron with trace amounts of carbon and other alloying elements. This category includes all steels, such as mild steel, tool steel, etc.
	Stainless Steel		Stainless steel is alloyed for corrosion resistance and non-magnetic qualities; it is available in many grades.
	Titanium / Exotic Metals		Reamers designed for use with metals such as titanium, niobium alloys, precious metals, etc.
	Wood		The reamer is designed for cutting wood.
	Other		Other, unlisted material application.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.