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#1
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Forgive my incompetence, but could someone please explain the screw measurements on my B4?
I've got the manual so I know which sizes I need, but what do they mean? What is "4-40 x 3/8"? I need to get hold of some 2-56 x 5/16 (holds the front bulkhead brace on) but I can't find any, anyone got any ideas? |
#2
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Click here for an explanation.
The 4 is a number that refers to the major diameter (#4 = 0.1120 in); The 40 is the number of threads per inch (UNC is typically used). The remaining fraction (5/16" in your case) is a reference to the length of screw. Note that for cap and button heads this dimension does not include the head, but will for those that have a countersink. Hope that helps ![]()
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#3
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Ah, it makes sense now. Thanks for that!
I've ordered a Nor-tech screw set so that should do me hopefully... |
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