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Product:

Size Units:

Counterbore Diameter:

Pilot / Pilot Hole Diameter:

Shank Diameter:

Number of Flutes:

Specialty Type:

Pilot Configuration:

Shank Type:

Adjustable?

NAS Specifications?

Coolant Feed?

English Screw Size:

Metric Screw Size:

Construction:

Material:

Coating / Finish:

Help with Counterbores specifications:

Counterbore Specifications
   Product       
   Your choices are...         
   Individual Counterbore       Default choice; one single counterbore. 
   Counterbore Set       Reserved for part numbers referring to a set of multiple counterbores. 
   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.
   Size Units:       
   Your choices are...         
   English / Fractional       Counterbores are designed with base units of inches or fractions of an inch, or to accommodate standard English screw-sizes. 
   Metric       Counterbores are designed with metric base units such as millimeters (mm) or centimeters (cm). 
   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.
   Counterbore Diameter       The full outside counterbore cutting diameter. 
   Search Logic:      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.
   Pilot / Pilot Hole Diameter       The diameter of the integral pilot, if present. For interchangeable pilots, this is the diameter of the hole.   
   Search Logic:      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.
   Shank Diameter       The diameter, hex size, or nominal taper size of the mounting arbor or shank. 
   Search Logic:      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.
   Number of Flutes       Number of cutting flutes or edges on the counterbore. 
   Search Logic:      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.
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Configuration
   Specialty Type       
   Your choices are...         
   Aircraft Counterbore       Most aircraft counterbores have a standard chucking shank size such as 1/4", 1/2", etc., and are configured for nonferrous materials (such as aluminum) that are frequently found in aircraft. 
   Cap Screw Counterbore       Counterbores are designed to provide a recess or spot face for the head of a standard socket-head cap screw. 
   Fillister Head Screw Counterbore       Counterbores are designed to provide a recess or spot face for the head of a fillister-head screw. 
   Blade Counterbore       Counterbores use straight, blade-like protrusions from the side of the body for cutting. 
   Back Counterbore       The counterbore extends through the body of the material so that the counterbored surface is opposite the counterbore chuck or holder. 
   Type B Counterbore         
   Type CB Counterbore         
   Type CR Counterbore         
   Type M Counterbore         
   Type MS Counterbore         
   Type R Counterbore         
   Type X Counterbore         
   Other       Other unlisted, specialized, or proprietary counterbore types. 
   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.
   Pilot Configuration       
   Your choices are...         
   None       The counterbore face is flat, and does not have a pilot or pilot hole. 
   Solid Pilot       The pilot is integral to the counterbore and features a solid construction. 
   Interchangeable Pilots       The counterbore end has a hole into which pilots of different diameter are mounted. The pilot's mounting shaft is inserted into the hole and secured with a set screw or other device. 
   Drill Pilot       The counterbore is designed so that a drill mounts into the pilot hole, and is secured with a set screw or other device. The pilot drill can be replaced when worn. 
   Other       Other unlisted or specialized pilot configurations. 
   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.
   Shank Type       
   Your choices are...         
   Straight Shank       The counterbore shank is the same diameter as the cutting edges. 
   Pin Drive       The shank contains a groove for engagement of a pin drive. Sometimes, pin drive shanks can be used in straight-shank mounting. 
   Tapered Shank       The shank is tapered for mounting, typically in standard design such as a Morse taper. 
   Reduced Shank       The shank mounting diameter is reduced from the cutting diameter, often for mounting in a smaller or standard-size chuck. 
   Hex Shank       The mounting portion of the shank is hexagonal for positive-hold mounting in a chuck. 
   Square Shank       Square shanks are used for handle, wrench, or vise engagement. 
   Threaded Shank       The shank is threaded for screwing into the mounting arbor. 
   Other       Other unlisted, specialized, or proprietary shank styles. 
   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.
   Adjustable       The counterbore size may be adjusted slightly with screws or other mechanisms. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   NAS Specifications       Products are manufactured in accordance with National Aerospace Standards (NAS). 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Coolant Feed       Holes or channels for directed coolant feeds are located at or near the cutting edges. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
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Screw Size
   English Screw Size:       
   Your choices are...         
   # 000         
   # 00         
   # 0         
   # 1         
   # 2         
   # 3         
   # 4         
   # 5         
   # 6         
   # 8         
   # 10         
   # 12      
   1/4"         
   5/16"         
   3/8"         
   7/16"         
   1/2"         
   5/8"         
   3/4"         
   7/8"         
   1"         
   Other       Other unlisted English screw sizes. 
   Search Logic:      Products with the selected attribute will be returned as matches. Leaving or selecting "No Preference" will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Metric Screw Size         
   Search Logic:      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.
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Construction
   Construction       
   Your choices are...         
   Solid / Tipped Flutes       Counterbores are manufactured from a solid piece of material, or are solid devices with brazed tips. 
   Holder and Inserts       Counterbores have a holder with attachable inserts. Typically, these inserts bolt onto the holder and are replaced when the cutting edges are worn. 
   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.
   Material       
   Your choices are...         
   High Speed Steel       High-speed steel is a cost-efficient cutter material. It is used for general-application metal machining. 
   Cobalt       Cobalt steel is somewhat harder than high-speed steel, and is often used for counter-boring in stainless steel and other alloys. 
   Carbide / Carbide-Tipped       Because they are much harder than high-speed steel, carbide grades are much harder and, therefore, last longer and wear less. Several coatings are available to lengthen cutter life. This category includes solid carbide and carbide-tipped counterbores. 
   Diamond / PCD       Industrial diamond grades such as polycrystalline diamond (PCD) are used in applications that require very long life. Sometimes, they are used for special applications such as very high speed cutting. 
   Other       Other unlisted or specialized cutter materials. 
   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 cutting edges are uncoated. 
   Coated       The drill is coated to provide cutting lubricity and/or to add abrasion-resistance for longer tool life. 
   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.
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