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MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG TD TF 1500 - Screw size

Can anyone tell me the thread size of the screw that holds the knob on the TF windscreen wiper shaft, I have tried several with out much luck. could it be 7BA?
Thomas WELLS

Thomas - It could well be a BA size screw, but not only is 7BA a bit of an oddity, it is going to be exceedingly small. The BA screws normally found in the T series cars are mostly 2BA and 4BA (with a 5 BA used to hold the upper points in a SU fuel pump in place). Cheers - Dave
David DuBois

it is a 2BA set screw on most.

I just tried out two knobs, one worked with the 2BA, the other it did not fit???.
Don Harmer

Pretty sure mine are 2BA ...been a while since I have had them off!
David Sheward

Hi Thomas,

Saw your query late and have just been out to garage to check - definately 4BA, anything bigger would weaken shaft! These are still available from some car factors, you may need to shorten and clean up cut end with a fine file, having screwed on nut before hand to unscrew and clean thread up.

Cheer,

John
J C Mitchell

This thread was discussed between 04/09/2011 and 06/09/2011

MG TD TF 1500 index

This thread is from the archive. The Live MG TD TF 1500 BBS is active now.