中文版Overseas commonly used inch thread code number, name and standard number
Mark code number name (or use) nationality and standard number note
B.S.W. The standard Hui coarse thread series, the general-utility straight thread Britain standard BS84 tooth angle is 55° inch thread
B.S.F. Standard Hui fine thread series, general-utility straight thread
Whit.S attaches Hui may choose the series, general-utility straight thread
Whit Hui tooth's non-standard thread
UN the constant pitch series's unified thread American standard ANSIB1.1 standard tooth (tooth bottom is even or optional round), external screw thread
UNC coarse thread series unified thread
UNF fine thread series unified thread
UNEF superfine dentition row unified thread
UNS① Special series unified thread
UNR circular arc tooth bottom constant pitch series's unified thread circular arc tooth bottom's UNR, UNRC, UNRF, UNREF, UNRS only use in the external screw thread not having the box thread
UNRC circular arc tooth bottom coarse thread series unified thread
UNRF circular arc tooth details dentition row unified thread
UNREF circular arc tooth bottom superfine dentition row unified thread
UNRS circular arc tooth bottom special series unified thread
NPT② General-utility's awl pipe thread American standard ANSIB1.20.1 tooth angle is 60° British system pipe thread
The NPSC pipe connection uses the ascending pipe thread
The NPTR guide rod connection uses the awl pipe thread
The NPSM solderless joint uses the ascending pipe thread
The NPSL stopping nut uses the ascending pipe thread
The NPSH hose connection uses the ascending pipe thread
NPTF does seal standard type awl pipe thread American standard ANSIB1.20.3 Ⅰ
PTF-SAE SHORT does seals the short awl pipe thread Ⅱ
NPSF does the seal standard type fuel oil to use the ascending pipe box thread Ⅲ
NPS1 does the seal standard type to use the ascending pipe box thread generally Ⅳ
ACME③ General-utility's acme thread American standard ANSIB1.5 tooth angle is 29° British system transmission thread
①The size and the common difference use and the standard series same formula calculate outside standard series
All diameters and pitch combination.
②Our country 60° circular cone pipe thread GB/T12716-1991 with it equivalent.
③ACME thread including general-utility and calm two kind of coordinate acme thread,
General-utility and our country standard GB/T5796-1986 stipulation acme thread performance resembling with.
