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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°
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