Metric Hex Bolt Diameters and Thread Pitches mm 10 20 30 40 50 60 70 80 90 100 110 120 130 140 . Make sure to print this chart to Actual Size (no scaling). After printing, measure the ruler in the margin to ensure correct scale. See . Length is measured from under the head to the end of the bolt Note: Metric Screw Thread Chart Metric Tap Size Tap Drill (Inches) Clearance Drill (Inches) . Standard Screw Thread Chart Standard Thread Size Tap Drill Size (Inches) Clearance Drill Size (Inches) . The values listed in the chart above are heremended values for a class 2 thread fit. The size of a metric screw or bolt is specified as diameter, pitch and length, in millimeters (millimeters is abbreviated mm). For nuts, size will appear as diameter and pitch. There is an exception though—if pitch isn't specified, the fastener is coarse threaded. Consider this size…. M8-1.0 x 20.

Fastener and Screw / Bolt Design, Formula and Calculations. The following table chart defines standard metric external thread size M1.6 to M18 per. ANSI/ASME B1.13M-1995. These thread sizes and classes represent bolts and screws, as well, as other standard external threads. Do not use these values for standard metric internal thread design. Metric bolt conversion data for industrial bolts /rods, machine screws and small diameter fasteners from Elgin Fastener Group includes metric to standard bolt conversions. The chart below shows metric bolt conversions and DIN numbers for fasteners. 32 rows The bolt chart provides both US and metric sizes. NOMINAL DIAMETER (NOMINAL BOLT …

With metric threads tapping drill size is easy to work out because it is the bolt diameter minus the thread pitch so, for example, a standard pitch M16 bolt has a pitch of 2.0mm so the tapping drill size is 16 - … Dec 17, 1998 Spanner (Wrench) sizes . Below heremon spanner (wrench) sizes for metric screw threads. Hex head widths (width across flats, wrench size ) are for DIN 934 hex nuts and hex head bolts . Other (usually smaller) sizes may occur for reasons of weight and cost reduction.