Help with Counterbores specifications:
Counterbore Specifications
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| 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. | ||
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| 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. | ||
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| 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. | ||
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| 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. | ||
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| 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. | ||
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| 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
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| 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. | ||
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| 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. | ||
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| 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. | ||
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| 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. | ||
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| 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. | ||
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| 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
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| 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. | ||
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| 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
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| 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. | ||
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| 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. | ||
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| 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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