The Old Lawnmower Club
Collection, Preservation and Display of Old Lawn Mowers
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Atco Groundsman - Bolt Sizes

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Scott S Tue, 21/04/2020

Good evening all, 

Another rookie question if you don't mind.. 

Does anyone know what the bolt specifications are on a 1975 (ish) Atco groundsman 34? I am in the process of striping and rebuilding one and after ordering a small selection of metric bolts have come to the rapid realisation that they maybe the incorrect spec, are they imperial or other? 

If anyone knows the correct type/specification could they suggest a recommended supplier of such bolts. 

Some pics attached to try and help identify the year of mower (PS - it doesn't look like that at present ).. 

Thank you for your help in advance. 

 

Scott

Forums

wristpin Tue, 21/04/2020

 Nothing metric on the Groundsman.  

Early ones will be BSW ( British  Standard Whitworth) and BSF.  (British standard Fine ). Later  ones UNF and UNC. ( Unified fine and Unified Coarse)

Your  machine is most likely UNF / UNC