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This Japanese Industrial Standard specifies the spanners of round and spear-shape head types used as assembly or disassembly tools for bolts, nuts and square head set screws.
| Author | JSA |
|---|---|
| Editor | JSA |
| Document type | Standard |
| Format | File |
| Confirmation date | 2013-10-21 |
| ICS | 13.260 : Protection against electric shock. Live working
25.140.30 : Hand-operated tools |
| Number of pages | 24 |
| Replace | JIS B 4630 (1994-03-01) |
| Cross references | ISO/DIS 691 (1996-05), MOD |
| Year | 1990 |
| Document history | JIS B 4630 (1998-03-20) |
| Country | Japan |
| Keyword | JIS 4630;4630;JIS B 4630-1998 |