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9.1 Nuts shall be hexagonal in shape, and in accordance
6 t7 w% e4 l' D+ O5 D# ^( B1 swith the dimensions for the hex or heavy hex series, as$ G2 Z# M Y$ b9 U
required, by ANSI B 18.2.2 and ANSI B 18.2.4.6M. Unless
9 d& p# P. t1 f6 R4 T2 q! t+ }otherwise specified, the American National Standard Heavy4 S. [( b" {! u
Hex Series shall be used and nuts shall be either double
: ]! F: {8 h, r& mchamfered or have a machined or forged washer face, at the9 ]8 R/ G0 }+ C" N$ T6 O0 q% u0 k+ U
option of the manufacturer, and, conform to the angularity
/ {" C |6 Y8 `% V+ r9 Rrequirements of ANSI B 18.2.2 and ANSI B 18.2.4.6M.
3 G; Y5 l, m L' p这是ASTM A194里的一段话。. w" _5 x3 R( z- Q* X7 \* j6 h
对于红色那段话我的理解是，如果螺母标注没有其他特殊说明。那么就应该是才用Heavy Hex Series 而不是hex series。* ?% r9 B/ c5 o: C; ^
不知道大家是怎么看。。。: U' H) ?4 ]3 E" F% A% t8 F
因为今天公司采办说我们没写Heavy Hex Series ，所以他们居然买来一薄螺母。。。。7 f% \: g. h+ P$ f, R
/ c6 {4 ^; p; j+ e[ 本帖最后由 htsky 于 2008-7-23 15:24 编辑 ] |
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发表于 2008-7-17 14:28:30
