Thread shape symbol

Thread shape symbol

Acme – c acme Thread – Centralizing

Acme – g Acme – g Acme thread-general purpose

Target thread of American standard microscope

National shape tapered pipe thread of anpt aviation (ground wire tap marking does not spread)

British association standard thread

BSF British standard fine line series

BSP British standard tube

BSPP British standard tube (parallel) thread

BSPT British standard taper pipe thread

BSW British standard whitworth line series

M metric thread series

N American national 8,12 and 16 series (8N,12N,16N)

N support screw thread for USA

Nc U.S. national thick line series

Nef U.S. national fine line series

Nf U.S. national fine line series

Ngo national gas export line

NGT national gas cone thread (see “SHGT”)

Nh U.S. national hose connection and fire hose connection thread

NPS for tap only (see NHPSC,NHPSM)

NPSC U.S. national standard straight pipe threaded joint (by sign NHPS)

The NPSC dries the national standard fuel internal pipe threads

NPSF dryseal U.S. national standard fuel internal direct pipe thread

NPSH U.S. national standard straight pipe threaded hose joint

Screw thread screw thread insert for sti special thread

The stub vertex Acme stub Acme SHTUB thread

* UN unified solenoid series

* unc uniform thick line series

* unef uniform additional fine line series

UNJ* * uniform thread series, only 0.15011P to 0.18042P external thread control root radius.

Unjc uniform thick line series, only 0.15011P to 0.18042P external thread control root radius.

Unjf uniform fine line series, only 0.15011P to 0.18042P external thread control root radius.

Unm unified micro-thread series

Unr uniform constant pitch line, with 0.108P to 0.144P control root radius; Ext threads.

Unrc uniform coarse line series, its control root radius is 0.108P to 0.144P; Ext threads.

Unrf uniform fine line series with 0.108P to 0.144P control root radius; External thread.

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