The iron receptacle B2850 and B2848 are supplied together with two different types of mounting screws respectively (see the photo below). Which screw to use depends on the type of iron holder on which the receptacle is to be mounted. In the following mounting instructions, the iron receptacle B2848 for the HAKKO FM-2023 is used as an example.
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| Iron holder: For No.634, 635 & FH-100 | Iron holder: For No.FH-200 (current model) | |
 | These two types of screws are supplied together with B2850 and B2848 respectively. |  |
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