ACMI is not available for purchases made online at the following special stores: Apple Employee Purchase Plan participating corporate Employee Purchase Programs Apple at Work for small businesses Government, and Veterans and Military Purchase Programs, or on refurbished devices. See the Apple Card Customer Agreement for more information. Taxes and shipping are not included in ACMI and are subject to your card’s variable APR. If you choose the pay‑in‑full or one‑time‑payment option for an ACMI‑eligible purchase instead of choosing ACMI as the payment option at checkout, that purchase will be subject to the variable APR assigned to your Apple Card. Variable APRs for Apple Card other than ACMI range from 15.24% to 26.24% based on creditworthiness. See /kb/HT211204 for more information about eligible products. to select at checkout for certain Apple products purchased at Apple Store locations,, the Apple Store app, or by calling 1-800-MY-APPLE and is subject to credit approval and credit limit. * Apple Card Monthly Installments (ACMI) is a 0% APR payment option available only in the U.S.Let us know by leaving a comment below right now. Or which type of hole do you use most often? Now we’d like to hear what you have to say: We hope you enjoyed our new types of holes guide. Examples include screws, bolts and threaded rods.Įnjoyed this post? Check out our types of welds post. Tapped holes are used to hold threaded components. The ’12’ means that there are 12 threads per inch. The “2.5” is the pitch of the thread, which is the distance in millimeters between each thread.įor a UNF thread, a through 1½” 12 hole would look like this: Tapped holes are shown on drawings as follows: For example a tapped hole for an M8 bolt would be ‘M8’.įor different types of threads, for example a Unified National Fine (UNF) thread, the numerical dimension is shown first then the thread type “UNF”. For metric holes, the diameter symbol is replaced with an ‘M’. The symbol for a tapped hole depends on the standards used. T he 3D model below shows a counterdrilled hole with the same counterdrilled hole next to it cut in half: Like counterbore holes, countersink holes ensure the bolt or screw sit below the surface.Ĭounterdrill What Is a Counterdrilled Hole?Ī counterdrilled hole is like a countersunk hole but there is a recess above it. What Are Countersunk Holes Used For?Ĭountersunk holes are used for applications where a countersunk bolt or screw is required. You can find out the countersunk dimension required for countersunk metric bolts here. This is known as the theoretical edge and this size countersink is for an M20 countersunk bolt. You may be wondering what the ‘ Ø40.32′ is. If the countersink was a blind hole, the ‘Through’ above would be replaced with the depth of the pilot hole. Spotface What Is a Spotface?Ī spotface is a shallow counterbored hole.Ĭountersunk holes are shown on drawings as follows – the bottom section view shows what the top dimension refers to. They are used for applications where the bolt or screw must sit beneath the surface.įor example, in applications where there isn’t space for a hex-head bolt to be used due to clearance issues:Ī washer may also be present underneath the socket-head screw. What Are Counterbored Holes Used For?Ĭounterbores are machined for socket-head screws. You can find out what size counterbore you need by looking at a chart such as this one. The counterbore example above was for an M20 socket-head bolt with normal clearance. That’s why there isn’t a ‘Through’ or a dimension after the pilot hole diameter, because it is assumed it goes all the way through.Ī ‘pilot hole’ is a small diameter hole, usually the first hole to be drilled. Note for counterbored holes that the pilot hole usually goes completely through the component. The bottom view explains what the counterbore dimensions are showing. The top view shows how counterbored holes are shown on drawings. How Are Counterbores Shown on Engineering Drawings?Ĭounterbored holes are shown on engineering drawings as follows: The symbol used for a counterbore is ‘⌴’.
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