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Specialty Type
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Your choices are...
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Aircraft Counterbore
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Aircraft counterbores typically have a standard chucking shank size such as 1/4", 1/2", etc., and are often configured for nonferrous materials such as aluminum that are frequently found in aircraft.
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Cap Screw Counterbore
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Counterbore specifically designed to provide a recess or spot face for the head of a standard socket head cap screw.
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Fillister Head Screw Counterbore
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Counterbore specifically designed to provide a recess or spot face for the head of a fillister head screw.
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Blade Counterbore
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Term for a counterbore that uses straight blade-like protrusions from the side of the body to cut the counterbore.
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Back Counterbore
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Counterbore designed so that the body extends through the body of the material, so that the counterbored surface is on the opposite side of the counterbore chuck or holder.
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Type B Counterbore
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Type CB Counterbore
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Type CR Counterbore
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Type M Counterbore
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Type MS Counterbore
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Type R Counterbore
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Type X Counterbore
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Other
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Other unlisted, specialized, or proprietary counterbore type.
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Search Logic:
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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.
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Pilot Configuration
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Your choices are...
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None
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Counterbore face is flat with no pilot or pilot hole.
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Solid Pilot
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Pilot is integral to counterbore in a solid construction.
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Interchangeable Pilots
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Counterbore end features 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.
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Drill Pilot
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Counterbore is designed so that a drill mounts into the pilot hole, and is secured with a set screw or other device. Pilot drill can be replaced when worn.
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Other
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Other unlisted or specialized pilot configuration.
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Search Logic:
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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.
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Shank Type
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Your choices are...
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Straight Shank
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Counterbore shank is the same diameter as the cutting edges.
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Pin Drive
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Shank contains a groove for engagement of a pin drive; pin drive shanks can sometimes also be used in straight shank mounting.
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Tapered Shank
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Shank is tapered for mounting in a standard taper such as a Morse taper.
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Reduced Shank
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Shank mounting diameter is reduced from cutting diameter, often for mounting in a smaller or standard-size chuck.
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Hex Shank
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Mounting portion of shank is hexagonal in shape for positive-hold mounting in a chuck.
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Square Shank
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Square shank for handle, wrench, or vise engagement.
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Threaded Shank
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Shank is threaded for screwing into the mounting arbor.
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Other
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Other unlisted, specialized, or proprietary shank style.
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Search Logic:
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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.
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Adjustable?
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Counterbore size may be adjusted slightly using screws or other adjustment mechanisms.
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Search Logic:
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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.
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NAS Specifications?
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Manufactured in accordance with National Aerospace Standards (NAS).
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Search Logic:
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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.
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Coolant Feed?
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Hole or channel for directed coolant feed at or near the cutting edges.
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Search Logic:
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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.
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