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2024年1月18日发(作者:win2008 版本)

标准螺纹代号列表

螺纹代号

Thread 螺纹Thread

symbol

公制螺纹

M

Metric screw

threads

S

UNC

UNF

UNEF

统一螺纹

UNS

粗牙系列Coarse series

细牙系列Fine series

参考标准

Reference

Standard

ISO68,GB196

ISO724,GB196

ISO1501,

GB/T15054

牙型角

Thread

Angle

小螺纹Miniature screw threads

粗牙系列Coarse series

细牙系列Fine series

特细牙系列

Extra-Fine series

60°

特殊直径、螺距、衔接长度ANSI B 1.1

Unified threads

系列

Special diameterpitch

length of engagmentand

UN

公制梯形螺纹

等螺距系列

Constant-pitch series

Tr

Metric trapezoidal screw threads

30梯形螺纹

30trapezoidalscrew threads

锥管外螺纹

ISO2904,

GB5796

30°

TM

R

Pipe threads

Rc

where

pressure-tight

joints are made

on the threads

RP

Taper external screw

螺纹密封的管螺纹

threads

锥管内螺纹

Taper internal screw

threads

直管内螺纹

Parallel internal pipe

threads

55°

非螺纹密封的管螺纹

ISO/R228,

GB7307

ANSI/ASEM 60°

1/16 Taper

ISO/R7,

GB7306

55°

1/16 Taper

G Pipe threads where pressure-tight joints

are not made on the threads

NPT

通用美标锥管螺纹

American Standards taper pipe threads for B1.20.1,

general use

美标直管接头螺纹

NPSC American Standards straight pipe threads in

pipe coupling

美标直管机用自由配合接头连接螺纹

NPSM

American Standards straight pipe threads

for free-fitting mechanical joints for

fixtures

美标燃料直管内螺纹

NPTF Dryseal American standards fuel internal

straight pipe threads

GB/T12716

ANSI/ASEM

B1.20.1

60°

60°

1/16 Taper

ANSI B1.20.3

美标锥管干密封螺纹

NPSF Dryseal American standards taper pipe

threads

BA

英标螺纹

British association threads

英标自行车螺纹

British standards cycle threads

英标惠氏螺纹

British standards Whitworth threads

BS84

BSF

英标细牙螺纹

British standards fine threads

英标显微镜螺纹

BSMO British standards microscope objective

threads

FG

(德国)自行车螺纹

(Germany)Cycle threads

(德国)薄钢管螺纹

(Germany)Steel conduit threads

60°

BS93 47°30〃

BSC BS811 60°

BSW

55°

BS3569

DIN79013 60°

Pg DIN40430 80°


本文标签: 螺纹 美标 锥管 直管 衔接