Section : Bodywork and Interior

Door slam plate

Posted By : Paul Haggett, 26-Oct-2006, 01:16pm

• Door slam plate

  Posted By : Michael Charlton, 26-Oct-2006, 02:29pm

  Do you mean the b post catch plate?
  If so I replaced mine with 1/4" unf c/sunk head cap screws so you can use allan keys. Far better.
  I have a surplus if you want to go that way?
  
  Mike
  AO SYKS
  
  
  
  
  

  • Door slam plate

    Posted By : Paul Haggett, 26-Oct-2006, 02:52pm

    Hi Mike
    Yes thats the item i meant to describe!!!
    You can e-mail me on marcopaulo999@hotmail.co.uk with the details of cost etc.
    The cap head screws seem the best way to go!
    cheers
    Paul

  • Door slam plate

    Posted By : Michael Charlton, 27-Oct-2006, 09:24am

    Sent an e. mail, how many ?
    1.25 " x 1/4/" dia unf covers a multitude
    Hood frame to b post body, door striker etc
    
    Mike

    • Door slam plate

      Posted By : Wayne Farnworth, 27-Oct-2006, 11:15am

      In the Triumph Parts Manual, it is described as NF (National Fine Thread)
      
      Is there a difference between this and UNF (Unified Fine Thread)?
      
      Part No: TK4707P
      
      Wayne

      
      
      Door slam plate

      • Door slam plate

        Posted By : Mark Stradling, 27-Oct-2006, 01:13pm

        Short Answer: No.
        
        Long Answer:
        Threads - you really don't want to know, trust me!
        
        Back at the start of the industrial revolution if you wanted to bolt something to something else you made a hole, then made a bolt, then made a nut to fit it. Every nut and bolt's thread was unique. This annoyed Sir Joseph Whitworth so he messed around with thousands of different threads before deciding that the best thread was a 55 degree thread angle, rounded crests and roots. He then made shed loads of cash selling his new fangled tap and die sets in a range of sizes of Whitworth sizes, which more or less went on to become BSW (British Standard Whitworth) corse threads standard.
        
        As is the way a number of different threads came along, BSF (British Standard Fine - 55 degree thread angle), BA (British Association - 47.5 degrees) in the UK, others around the world such as ANF and ANC (60 degrees).
        
        Attempts were made to unify the different standards, with UNF and UNC (60 degrees)... but people didn't all switch to these so they just added to the confusion.
        
        Then we have the metric threads too.
        
        UNF and NF both have 60 degree thread angles, but NF has a flat crest/root as opposed to rounded ones.
        
        Many differently threaded nuts/bolts will 'fit' each other, but the contact area between the thread surface will be compromised or the nut/bolt internally stressed. Building a bit of shelving in the garage - fine. Not wanting something to fall of under sudden high loading (like a crash) - not fine.
        
        If necessary I can also dredge up knowledge on different ways of manufacturing nuts and bolts from my Uni days...

      • Door slam plate

        Posted By : Michael Charlton, 27-Oct-2006, 02:11pm

        . . . . .coming from Le Mans the rear valance ,boot floor and wings were ripped off/kinked . . . . . . but the doors didn 't fall off
        
        Mike