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1 1/2 - 6 UNC : Basic Thread Dimensions (Pitch, minor & major diameters, depth, lead), Tolerance range for all applicable classes and much more
The size of a thread can be measured and defined by the geometric dimensions of its tooth profile. These dimensional parameters include pitch, major diameter, minor diameter, pitch diameter, depth, flank angle, and taper angle as illustrated below.
Carr Lane Mfg.’s Thread Calculator is a reliable online tool for quickly and accurately calculating critical thread dimensions. It supports many thread types and sizes, including Internal Threads, Unified and Metric, Screw Threads.
ANSI/ ASME EXTERNAL Screw Thread Size Chart. All units are in inches. Unified Screw Threads per. ANSI/ASME B1.1-1989 (R2001), R2001) Nomenclature, are used. Acceptability criteria are described in ANSI/ASME B1.3M-1992 (R2001).
UNF – Unified National Fine Thread. Female and Male UNC/UNF threads are both parallel. The UNC/UNF flank angle is 60°. Unified threads comes in three different classes: for applications where a liberal tolerance is required to permit easy assembly even with slightly nicked threads.
23 Φεβ 2024 · The UNC thread chart referenced on the Engineering Toolbox page is a comprehensive table listing the dimensions and specifications for Unified National Coarse (UNC) threads as defined by ANSI/ASME B1.1 standards.
Basic Thread Dimensions (UNC, UNF & UNEF) The basic dimensions are nominal dimensions of a unified thread profile without allowance and tolerances (The thread class defines that). They are based on standard ASTM B1.1. The basic dimensions can be used for design.
