Bolt Thread Pitch Chart

Ansi asme external screw thread size chart.

Bolt thread pitch chart.

Below are the most commonly used thread pitches tpi s for inch bolts and nuts. Ansi asme b1 1 1989 r2001 r2001 nomenclature are used. Imperial inch bolt thread pitch chart so what is a thread s tpi. All units are in inches.

Acceptability criteria are described in ansi asme b1 3m 1992 r2001. Bolt diameter mm thread pitch mm standard fine extra or super fine. Screw thread designations minor diameter major diameter pitch diameter. As fastener manufactures we got you covered.

The metric system s pitch is commonly viewed as the reverse of tpi in that it is the distance measured between two adjacent threads. Ansi asme b1 1 1989 r2001 r2001 nomenclature are used. Making sure that a nut fits a bolt is actually more complicated that just nuts and bolts. This screw chart is not comprehensive.

12 12tpi is the unf standard however 14tpi is far more common in actual use. Screw thread designations minor diameter major diameter pitch diameter. In the imperial inch system threads are commonly referred to by measuring an inch and counting how many threads are inside that measurement. Thread series cover designations of diameter pitch combinations that are measured by the number of threads per inch tpi applied to a single diameter.

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. Coarse thread series unc unrc is the most common designation for general application bolts and nuts. Unified screw threads per. All units are in inches.

Acceptability criteria are described in ansi asme b1 3m 1992 r2001. Metric thread pitch table. Ansi asme internal screw thread size chart. This screw chart is not comprehensive.

Print this page. Thread series cover designations of diameter pitch combinations that are measured by the number of threads per inch tpi applied to a single diameter. Thread pitch chart unc unf unef un. Bolt size threads per inch tpi coarse thread unc fine thread unf 0000 160 000 120 00 90 0 80 1.

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. Which is an acronym for threads per inch. Bellow are iso din accepted thread pitch charts for commonly found metric fasteners.