The size of indexable inserts is determined by the diameter of an inscribed circle (I.C.), except for rectangular and parallelogram inserts where the length and width dimensions are used. To describe an insert in its entirety, a standard ANSI B212.4-1986 identification system is used where each position number designates a feature of the insert. The ANSI Standard includes items now commonly used and facilitates identification of items not in common use.

Cutting Point Configuration: The cutting point, or nose radius, is designated by a number representing 1/64ths of an inch; a flat at the cutting point or nose, is designated by a letter: 0 for sharp corner; 1, 1/64 inch radius; 2, 1/32 inch radius; 3, 3/64inch radius; 4, 1/16 inch radius; 5, 5/64 inch radius; 6, 3/32 inch radius; 7, 7/64 inch radius; 8, 1/8 inch radius; A, square insert with 45º chamfer; D, square insert with 30º chamfer; E, square insert with 15º chamfer; F, square insert with 3º chamfer; K, square insert with 30º double chamfer; L, square insert with 15º double chamfer; M, square insert with 3º double chamfer; N, truncated triangle insert; and P, flatted corner triangle insert.

Thickness: The thickness is designated by a one- or two-digit number, which indicates the number of sixteenths of an inch in the thickness of the insert. It is a one-digit number when the number of sixteenths is a whole number; it is a two-digit number carried to one decimal place when the number of sixteenths of an inch is not a whole number.

Shape: The shape of an insert is designated by a letter: R for round; S, square; T, triangle; A, 85º parallelogram; B, 82º parallelogram; C, 80º diamond; D, 55º diamond; E, 75º diamond; H, hexagon; K, 55º parallelogram; L, rectangle; M, 86º diamond; O, octagon; P, pentagon; V, 35º diamond; and W, 80º trigon.

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Other Conditions: The tenth position defines special conditions (such as edge treatment, surface finish) as follows: A, honed, 0.0005 inch to less than 0.003 inch; B, honed, 0.003 inch to less than 0.005 inch; C, honed, 0.005 inch to less than 0.007 inch; J, polished, 4 microinch arithmetic average (AA) on rake surfaces only; T, chamfered, manufacturer's standard negative land, rake face only.

Aug 11, 2020 — Milling grooves criss-crossing the groove bottom hinder optimal sealing. O-ring groove made with a countersink for O-rings. Concentric grooves ...

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Type: The type of insert is designated by a letter. A, with hole; B, with hole and countersink; C, with hole and two countersinks; F, chip grooves both surfaces, no hole; G, same as F but with hole; H, with hole, one countersink, and chip groove on one rake surface; J, with hole, two countersinks and chip grooves on two rake surfaces; M, with hole and chip groove on one rake surface; N, without hole; Q, with hole and two countersinks; R, without hole but with chip groove on one rake surface; T, with hole, one countersink, and chip groove on one rake face; U, with hole, two countersinks, and chip grooves on two rake faces; and W, with hole and one countersink. Note: a dash may be used after position 4 to separate the shape-describing portion from the following dimensional description of the insert and is not to be considered a position in the standard description.

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Relief Angle (Clearances): The second position is a letter denoting the relief angles; N for 0º; A, 3º; B, 5º; C, 7º; P, 11º; D, 15º; E, 20º; F, 25º; G, 30º; H, 0º & 11ºß; J, 0º & 14ºß; K, 0º & 17ºß; L, 0º & 20ºß; M, 11º & 14ºß; R, 11º & 17ºß; S 11º & 20ºß. When mounted on a holder, the actual relief angle may be different from that on the insert.  (ß - Second angle is secondary facet angle, which may vary by ±1°.)

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Dovetail grooves are a style of gland used to secure an O-ring for equipment assembly or maintenance. Metric dovetail grooves feature metric sizing ...

Tolerances: The third position is a letter and indicates the tolerances which control the indexability of the insert. Tolerances specified do not imply the method of manufacture.

Special Cutting Point Definition: The eighth position, if it follows a letter in the 7th position, is a number indicating the number of 1/64ths of an inch measured parallel to the edge of the facet.

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202199 — Selecting the correct carbide drill for your application is a crucial step in hole making. The Jobber Drill is a great general-purpose drill and ...

Singer slant is for slant needle machine only. · A high shank machine measures approximately 1 1/4" from the screw to the bottom of the foot. · A low shank ...

Pull-A-Part is a salvage yard that specializes in discount used auto parts for your car repair needs. We also buy old or junk cars for cash and provide free ...

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CPT code 93292 should be reported when billing Medicare Part B for the analysis of a Wearable Defibrillator System. CPT Codes 93260, 93261, 93279-93292 are ...

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Size: The size of the insert is designated by a one- or a two-digit number. For regular polygons and diamonds, it is the number of eighths of an inch in the nominal size of the inscribed circle, and will be a one- or two-digit number when the number of eighths is a whole number. It will be a two-digit number, including one decimal place, when it is not a whole number. Rectangular and parallelogram inserts require two digits: the first digit indicates the number of eighths of an inch width and the second digit, the number of quarters of an inch length.

Free delivery to Latvia on orders of 50 EUR or more. A delivery charge of 20 EUR will be billed on all orders less than 50 EUR.

Average Time to Ship 1-3 Days, extra ship charges may apply. Please see product page, cart, and checkout for actual ship speed.

The body is of hand-hammered and drawn brass. The soldered tone holes are made of nickel-silver and the hand-formed lip plate is silver.

Dec 16, 2022 — Callout Symbols. The '⌴' symbol is used to indicate a counterbore hole on engineering drawings. The depth number and the diameter symbol are ...