pakpaul
Western Thunderer
Today there are a large number of general arrangement and detail drawings available to help us build a model, and these tend to specify fasteners by their size, usually without quoting dimensions such as across flats in the case of nuts or bolts, or head sizes in the case of rivets or coach bolts.
These dimensions are available from standards, but I do not recall much detailed information on relevant standards in the modelling press and publications, and in this thread I will try to set out dimensions from some relevant standards, as well as scale equivalents, initially for gauge 0 7mm to one foot, gauge 1 at 1/32nd or 3/8" to one foot, and gauge 3 at 17/32" to one foot.
To start the ball rolling I will set out the Whitworth Standard which would cover nuts and bolts used for the construction of locomotives and rolling stock for British railways from middle/late victorian times to the 1960's. The tables below do not have all of the standard sizes, but can easily be expanded if this is felt necessary (the 1/16th sizes have been omitted as the do not seem to appear on the railway GA drawings I have looked at). There is one area I would like assistance on these as the washer sizes are guesstimates based on other standards as I do not have access to original Whitworth ones. For this reason they are shown in italic script.
I am initially showing tables for full size in inches, gauge 0 and 1 with scale sizes shown in both inches and millimetres as this may assist someone in making scale fasteners, depending on their machine tools units .
Apologies for the quality of the tables but we are still working on a means of getting a table from an excel file directly visible on the forum.
Any comments on format, scales needed and additional information would be appreciated. We could then modify this and then have it as reference material for the forum.
Regards
Paul
These dimensions are available from standards, but I do not recall much detailed information on relevant standards in the modelling press and publications, and in this thread I will try to set out dimensions from some relevant standards, as well as scale equivalents, initially for gauge 0 7mm to one foot, gauge 1 at 1/32nd or 3/8" to one foot, and gauge 3 at 17/32" to one foot.
To start the ball rolling I will set out the Whitworth Standard which would cover nuts and bolts used for the construction of locomotives and rolling stock for British railways from middle/late victorian times to the 1960's. The tables below do not have all of the standard sizes, but can easily be expanded if this is felt necessary (the 1/16th sizes have been omitted as the do not seem to appear on the railway GA drawings I have looked at). There is one area I would like assistance on these as the washer sizes are guesstimates based on other standards as I do not have access to original Whitworth ones. For this reason they are shown in italic script.
I am initially showing tables for full size in inches, gauge 0 and 1 with scale sizes shown in both inches and millimetres as this may assist someone in making scale fasteners, depending on their machine tools units .
Apologies for the quality of the tables but we are still working on a means of getting a table from an excel file directly visible on the forum.
Any comments on format, scales needed and additional information would be appreciated. We could then modify this and then have it as reference material for the forum.
Regards
Paul