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美制螺纹& b# N8 n. h# S& K" J- G
标号 螺纹代号 外螺纹 内螺纹
+ C) y- r: `, {- \- Y! {- Z 公差等级2A 公差等级2B6 i* Z5 f' s3 \. K* Y8 O7 N
大径 中径 小径
! i8 e; g! B! l _最大 小径 中径 大径
) ^$ o/ x- a2 t. P e最小
& O# j; M, y9 d& O1 a 最大 最小 最大 最小 最小 最大 最小 最大 ! W4 X5 p& k! f9 a/ b
JIC螺纹6 f* L# [, M. W- I9 J7 B
02 5/16×24UNF 7.910 7.727 7.221 7.127 6.650 6.782 7.036 7.249 7.371 7.938
: Y' k0 T T/ X- B1 e03 3/8*24UNF 9.497 9.314 8.809 8.712 8.237 8.382 8.636 8.837 8.961 9.525
1 L! W7 D' f% F( O B4 y3 P04 7/16*20UNF 11.079 10.874 10.254 10.147 9.568 9.728 10.033 10.287 10.424 11.1138 |: M' v0 t6 ~* k5 H8 U J
05 1/2*20UNF 12.667 12.461 11.841 11.732 11.156 11.328 11.608 11.875 12.017 12.7" H' h4 _7 Z3 ]% N
06 9/16*18UNF 14.252 14.031 13.335 13.221 12.573 12.751 13.081 13.371 13.52 14.2888 F3 y6 E5 Y1 H# F! M
08 3/4*16UNF 19.012 18.773 17.981 17.854 17.12 17.323 17.678 18.019 18.184 19.05$ b( T! J* p$ ]" p
10 7/8*14UNF 22.184 21.923 21.006 20.869 20.025 20.269 20.676 21.046 21.224 22.225. ^# u1 |1 ^' P8 ]2 {. ~$ V- I# G
12 1.1/16*12UNF 26.944 26.655 25.57 25.425 24.425 24.689 25.146 25.613 25.801 26.9886 z$ ~/ C5 N1 A$ P7 ?- H6 J! s
16 1.5/16*12UNF 33.294 33.005 31.92 31.773 30.775 31.039 31.496 31.963 32.154 33.338& p/ J. b1 ~4 x, e+ P5 j
20 1.5/8*12UNF 41.229 40.94 39.855 39.705 38.71 38.989 39.446 39.901 40.094 41.275
- E3 D) K8 R {# c/ Q$ h2 r; ]0 L+ t24 1.7/8*12UNF 47.579 47.29 46.205 46.053 45.06 45.339 45.796 46.251 46.449 47.625
0 o d+ X; J3 z- R) F6 \# h; {) n7 U32 2.1/2*12UNF 63.452 63.162 62.078 61.92 60.932 61.214 61.671 62.126 62.332 63.5
& `; N, [( P2 Q! q* R& S$ r5 l40 3812UNF 76.157 75.862 74.778 74.618 73.632 73.914 74.371 74.826 75.034 76.29 d) F& L* s! M" ?. F
18HK 1.1/2*10UNF 38.052 37.724 36.401 36.238 35.029 35.357 35.890 36.449 36.660 38.100' I) A6 }8 c+ p3 b9 E( r$ k! A* T
ORFS螺纹( a4 @$ t; }# [8 Q4 E
04 9/16*18UNF 14.252 14.031 13.335 13.221 12.573 12.751 13.081 13.371 13.52 14.288
: {1 A/ u9 T- l$ c$ d06 11/16*16UNF 17.427 17.188 16.396 16.274 15.535 15.748 16.104 16.431 16.589 17.463
3 `" ]1 {* R# P08 13/16*16UNF 20.599 20.361 19.568 19.444 18.707 18.923 19.279 19.606 19.766 20.638
2 `. U8 p* g( Q. V% [! ?+ Z' X10 1*14UNSF 25.357 25.095 24.178 24.036 23.195 23.444 23.825 24.221 24.407 25.41 h% x2 j7 r4 v- ~. ~; _
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