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發(fā)表于 2007-11-19 14:47:21
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英,、美制緊固件螺紋; v" I) N: }& _* J$ N; W
英寸制螺紋包括惠氏螺紋(Whitworth thread)和統(tǒng)一標(biāo)準(zhǔn)螺紋(Unified thread)。/ Q- g! {: d( `
惠氏螺紋是英國(guó)英寸制規(guī)格緊固件用普通螺紋,,其牙型角為55°,,習(xí)慣用公稱直徑(單位為英寸inch)及每英寸牙數(shù)來(lái)表示,尺寸單位采用符號(hào)“ ” ”,。例如:1/2”-12BSW表示公稱直徑為1/2”的粗牙惠氏螺紋,。) ~$ t* g ]" n! f8 u
統(tǒng)一標(biāo)準(zhǔn)螺紋是美國(guó)英寸制規(guī)格緊固件用普通螺紋,其牙型角為60°,,一般用號(hào)碼(公稱直徑﹤1/4”)或公稱直徑的英寸分?jǐn)?shù)(≥1/4”),、每英寸牙數(shù)和代號(hào)(UNC,、UNF)來(lái)表示,。例如:1/2”-13UNC表示公稱直徑為1/2”的粗牙統(tǒng)一標(biāo)準(zhǔn)螺紋。
. w! K5 I4 i& T4 T$ J) f惠氏螺紋和統(tǒng)一標(biāo)準(zhǔn)螺紋公稱直徑與每英寸牙數(shù)
% @* @, i6 d# `7 Y螺紋大徑 統(tǒng)一標(biāo)準(zhǔn)螺紋ANSI B1.1-182 惠氏螺紋BS84-1956
6 l% [( K% T7 f, \4 U9 Uinch 尺寸代號(hào) 粗牙UNC 細(xì)牙UNF 尺寸代號(hào) 粗牙BSW 細(xì)牙BSF
" X, e) V+ H7 [2 h5 V R+ @0.0600 0# 80 * w+ C% S0 B+ t* x6 f% N- v
0.0625 1/16 60
# U# \; V! ^# j0.0730 1# 64 72 " ~: X: n4 f5 l* _$ \
0.0860 2# 56 64
6 ], [6 Y3 u- @: Y, J" l0.0938 3/32 48
! _( V( V' J4 \2 Q; O- N7 M0.0990 3# 48 56 $ l' E! n& j' R+ N! T$ S
0.1120 4# 40 48
1 J: p9 v& K, L0 \0.1250 5# 40 44 1/8 40
' O+ S. ?& \* [; R0.1380 6# 32 40
* G3 h$ V, A: j% s1 T0.1563 5/32 32 . I! c- J I: r
0.1640 8# 32 36
; G7 X9 m6 l! N3 |3 v- @# v0.1875 3/16 24 32" |, J. k0 O' h/ q1 y
0.1900 10# 24 32
6 N& U9 ^5 h1 \0.2160 12# 24 28
) e. X; \: Y/ R+ w0 U( M% s0.2189 7/32 24 28
" }8 _! g, k+ g: h v& r- c0.2500 1/4 20 28 1/4 20 26
% k8 A; B7 K# ^: z, _% g% D0.2812 9/32 263 g ?) Y5 p0 k7 {/ p. f
0.3125 5/16 18 24 5/16 18 22
L* w: ]5 _# ^5 ?( g0.3750 3/8 16 24 3/8 16 20
8 y. s" E3 J5 \; _7 B, U0.4375 7/16 14 20 7/16 14 18
& W& X2 F9 U, p) W |/ A+ F h7 {0.5000 1/2 13 20 1/2 12 16/ g, H% ` P/ p0 g8 m! X$ A n
0.5625 9/16 12 18 9/16 12 16
( }. Q0 F: _' l5 h9 u2 X+ i0.6250 5/8 11 18 5/8 11 14
# E) k! P: r8 b: T5 ?! c" I0.6875 11/16 11 14
- u( W* d" A5 B2 x0.7500 3/4 10 16 3/4 10 12) f" Y. ^ r _6 L
0.8125 13/16 12" K& ^4 \# [4 x3 T+ ]" d2 p. O* I
0.8750 7/8 9 14 7/8 9 11, F: t2 _5 D+ i' o4 r b) H
1.0000 1 8 12 1 8 10( f$ Y8 I1 y* Z7 C# s% I
1.1250 1-1/8 7 12 1-1/8 7 9
; _, s! @8 z9 C- \( _1.2500 1-1/4 7 12 1-1/4 7 9
' X: r( d& C+ @& g9 Q1.3750 1-3/8 6 12 1-3/8 8- E/ Z# Z# X8 c: I2 ]3 R6 X7 v
1.5000 1-1/2 6 12 1-1/2 6 87 v# c; E* i! ?2 K; b
1.6250 1-5/8 1-5/8 8
) G- I9 F; X ?$ j1.7500 1-3/4 5 1-3/4 5 7( H' E" X: r# m8 _, K4 l
2.0000 2 4.5 2 4.5 7' m# H" c8 Z, z
2.2500 2-1/4 4.5 * [9 {9 D& J, W; Y. y
2.5000 2-1/2 4 * j/ @5 u g1 Y2 ]
2.7500 2-3/4 4
; E4 { A( t% G& L3.0000 3 4 ) ^7 A$ {( ^5 T* G5 `9 c
3.2500 3-1/4 4
# D1 d( J/ F: N" B3.5000 3-1/2 4 2 R. m$ q8 \1 f; H: c
3.7500 3-3/4 4
$ w$ ?7 E% m Z; y- R4.0000 4 4 ; e, K9 D6 ^7 ?$ n5 c: R* c
) O+ O' ~ [9 Y備注:各種英,、美制螺紋代號(hào)說(shuō)明+ D3 H6 J o- i
BA-British Association) I3 B3 J# k" U/ G
BSW-British Standard Whitworth
+ B! O1 l7 P' y) U& |- q BSF-British Standard Fine6 b! {; t" \& l" r
BSP-British Standard Pipe
+ Z$ ^. s; @4 } BSPT-British Standard Pipe Tapered
* V' I- g; g/ M, I4 a8 _ BSC-British Standard Cycle3 [2 Q9 U! [5 M1 ]/ j
UNC-Unified National Course
9 [% P5 @) a9 `* G. b9 F$ [ N UNF-Unified National Fine ) u7 J0 p; \5 P" }+ w7 s
UNEF-Unified National Extra Fine & y2 P; h3 b6 R- I9 W/ T4 @/ U
UNM-Unified National Miniature 8 o0 m' v% ]( _4 y; ^5 ?( t
NPT-National Pipe Tapered |
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