Bolt Thread Pitch Chart

Bolt size threads per inch tpi coarse thread unc fine thread unf 0000 160 000 120 00 90 0 80 1.

Bolt thread pitch chart.

Ansi asme external screw thread size chart. The metric system s pitch is commonly viewed as the reverse of tpi in that it is the distance measured between two adjacent threads. Coarse thread series unc unrc is the most common designation for general application bolts and nuts. Coarse thread series unc unrc is the most common designation for general application bolts and nuts.

Thread pitch chart unc unf unef un. Screw thread designations minor diameter major diameter pitch diameter. Coarse thread is beneficial because they are less likely to cross thread more tolerant in adverse conditions and facilitate quick assembly. Here is lightning bolt s metric bolt thread pitch chart.

Making sure that a nut fits a bolt is actually more complicated that just nuts and bolts. Ansi asme b1 1 1989 r2001 r2001 nomenclature are used. Unified screw threads per. Unified screw threads per.

Acceptability criteria are described in ansi asme b1 3m 1992 r2001. 12 12tpi is the unf standard however 14tpi is far more common in actual use. In the imperial inch system threads are commonly referred to by measuring an inch and counting how many threads are inside that measurement. Bellow are iso din accepted thread pitch charts for commonly found metric fasteners.

Acceptability criteria are described in ansi asme b1 3m 1992 r2001. Which is an acronym for threads per inch. As fastener manufactures we got you covered. Below are the most commonly used thread pitches tpi s for inch bolts and nuts.

All units are in inches. Metric thread pitch table. Ansi asme b1 1 1989 r2001 r2001 nomenclature are used. Print this page.

Coarse thread is beneficial because they are less likely to cross thread more tolerant in adverse conditions and facilitate quick assembly. Imperial inch bolt thread pitch chart so what is a thread s tpi. To the end of the bolt 4 40 9 16 1 2 7 16 3 8 5 16 1 4 10 8 6 4 coarse thread fine thread coarse thread fine thread coarse thread fine thread coarse thread fine thread coarse thread fine thread coarse thread fine thread coarse thread coarse thread coarse thread coarse thread fine thread. Thread series cover designations of diameter pitch combinations that are measured by the number of threads per inch tpi applied to a single diameter.

All units are in inches. This screw chart is not comprehensive. Bolt diameter mm thread pitch mm standard fine extra or super fine. Screw thread designations minor diameter major diameter pitch diameter.