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Threads

Thread data - metric, unified, ACME and others

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ANSI B1.20.1 - NPS - American National Standard Straight Pipe Threads

NPS pressure tight straight pipe threads with lubricant or sealer

ANSI B1.20.1 - NPT - American National Standard Taper Pipe Threads

NPT and NPTF pipe threads - dimensions according ANSI/ASME B1.20.1/3

ANSI/ASME B1.5 - ACME Screw Threads

Acme trapezoidal threads

British Standard Brass

British Brass Thread is an imperial unit based screw thread

British Standard Cycle Thread

British Standard Cycle is a British Imperial screw thread standard

BS 21 - Pressure Tight Pipe Thread Joints

BSPT - British Standard Pipe Taper threads & BSP or BSPF - British Standard Pipe Parallel (Straight) threads

EN 10226 - Pipe threads where pressure tight joints are made on the threads - Dimensions

Pipe threads where pressure tight joints are made on the threads - Part 1: Taper external threads and parallel internal threads

EN 10241 - Steel threaded pipe fittings

EN 10241 specifies requirements for screw threaded fittings

ISO 228 - Pipe Threads where Pressure-tight Joints are not made on the Threads

Requirements for thread form, dimensions, tolerances and designation for fastening pipe threads, thread sizes

ISO 2841 - Spark Plugs Metric Threads

Metric threads spark plugs according ISO 28741

ISO 2901 - Metric Trapezoidal Screw Threads

Dimensions of ISO metric trapezoidal screw threads

ISO 7 - Pipe Threads where Pressure-tight Joints are made on the Threads

Pressure-tight joints made on the pipe threads

ISO 724 - Metric Threads

Dimensions of metric threads according ISO 724

Metric Threads - Clearance Holes and Tapping Drill Sizes

Recommended clearance holes and drill tap sizes

NPT Threads - Taps and Drill Sizes

NPT - Briggs Standard Pipe threads - Taps and Drill Sizes

Standards Applied for Piping Threads

Applied threaded standards used for piping connections

Threads commonly used in Piping

Piping thread standards

UNC and UNF - Unified Inch Screw Threads

ANSI/ASME B1.1 Unified National Thread - UNC Coarse series and UNF Fine series

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Whitworth Pipe Threads

BSPP (G) - British Standard Pipe Parallel and BSPT (R/Rp) – British Standard Tapered Pipe for pipes and tapered threads - G/R/Rp

Withworth Threads - Taps and Drill Sizes

Taps and drill sizes used for Whitworth - ISO 7 and ISO 228 threads

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