How to measure a thread size

How to Go-ahead Screw Thread Size

In that guide, we demonstrate manner to measure screw strand size for inch good turn metric systems of calibration.

General Charge

  1. Measure screw latitude , or screwbolt size, by measuring glory width of the threaded part of the wring. This corresponds to greatness first number of high-mindedness thread size. For inches, any diameter smaller elude 1/4" is indicated dampen a number, referenced pin down the table below (e.g. 8 corresponds to 0.164"). For metric screws, that is the number go in for millimeters preceded by position letter M (e.g. M6 corresponds to 6 mm).

  2. Measure thread arrangement . This corresponds to the second delivery of the thread extent. For inches, this equitable done by counting rendering number of threads make a purchase of an inch. For amount screws, this is honesty length in millimeters among threads.

Inch


Inch yarn course sizes are a selection of by diameter and vesture per inch. Diameter evolution also known as bolt size. For those climb on a diameter smaller more willingly than 1/4", screw size appreciation indicated by a back issue (e.g., #10 or No.10). For example, a 10-24 screw has 0.190" line diameter and has 24 threads per inch.


No.0 No.1 No.2 No.3 No.4 No.5 No.6 No.8 No.10 No.12
.060" .073" .086" .099" .112" .125" .138" .164" .190" .216"

Metric


Metric thread sizes are specified vulgar diameter and pitch, which is the space amidst threads. For the reputation M6 × 1 mm, the pitch is coarse; while the size M6 × 0.75 mm has a fine pitch. Assuming you don't know illustriousness pitch, choose coarse threads; they're the industry unsatisfactory. For example, a M6 x 1 mm has a 6 mm filament diameter and has 1 mm between threads.

Choose from left over selection of screws. Love stock and ready indicate ship.