Non-Standard Holes and Slots

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A clearance hole is a hole drilled through a component to allow a bolt to pass through Use this table to determine the clearance hole size for metric

A slotted hole for bolting would automatically be 12 the diameter of the said called out slotbolt size 1516 slotted hole for a 78 The standard clearance in diameter and width of slot for a fastener 18 mm in diameter is 1 1 mm 2 2 mm 3 3 mm 4 4 mm 5

dragons luck megaways slot Type of bolt holes: STDH: Standard size holes Used in bearing type connections OVSH: Over size holes SSLH: Short slotted holes Used in A slot is really just an elongated hole, so first you'd need to know the hole diameter Then you can either call out the dimension from center-to-center on the