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.

The most common system adhered to is the ISO Metric Screw Thread, where designations like M6x1 signify a M6 screw with major diameter of 6 mm and a pitch of 1 mm. This naming convention of M sizes for screws enables engineers to swiftly identify and match threaded components, thereby facilitating streamlined procurement and assembly processes.

The designation of a screw thread gives the thread symbol, the nominal size, the pitch, and the thread tolerance class (Ex: M6 x 1 - 4g6g). In tolerance class designation, the pitch diameter tolerance is followed by major diameter tolerance.

The following table chart are standard metric internal thread sizes M 0.25 - M 8 per. ANSI/ASME B1.13M-1995. These thread sizes and classes represent bolts and screws, as well, as other standard internal threads.

Metric internal thread dimensions chart according to ASME B1.13M "Metric Screw Threads: M Profile" standard. Minor diameter, pitch diameter and major diameter are given dimensions in the internal thread chart. All dimensions are in millimeters.

(a) Example of internal thread M Profile : M6 x 1 – 5H6H. If the tolerance class for Pitch diameter and Minor diameter are identical, it is not necessary to repeat the symbols. For example : M6 x 1 – 6H6H should become M6 x 1 – 6H. (b) Example of external thread M Profile : M6 x 1 – 4g6g.

M6 : Basic Thread Dimensions (Pitch, minor & major diameters, depth, lead), Tolerance range for all applicable classes and much more

Metric thread calculator to calculate external and internal metric thread dimensions including major diameter, minor diameter, pitch diameter and thread tolerance according to ISO 724 and ISO 965 standards. There are two calculation options available, general engineering use …

Sep 19, 2024 · The metric thread size in the screw size chart is denoted by a series of numbers and letters that encapsulate various dimensions, including the major diameter, thread pitch, and thread type. The most common system is the ISO Metric Screw Thread, where designations like M6x1 signify an M6 screw with a major diameter of 6mm and a pitch of 1mm.

The most common system adhered to is the ISO Metric Screw Thread, where designations like M6x1 signify a major diameter of 6 mm and a pitch of 1 mm. This naming convention of m sizes for screws enables engineers to swiftly identify and match threaded components, thereby facilitating streamlined procurement and assembly processes.