Hi Terry,
My apologies for not responding sooner, I did not see your post nor did I see your PM. I would be very interested in knowing what you have left from your own project. Based on the OMERS manual diagram for the Carrier Set No. 21, Page 60, I can confirm that indeed they are BSF, Steel, Ch H, 1/4-26 x 5/8-in long. For me, they could be longer if 5/8" length are not available. Can't remember the quantity I originally requested, but would like to find 8 if possible
To contact me, please try my email,
patrick.johnson@sympatico.ca
Let me know if you also have the nuts to go with them, and the Shakeproof Washers (not essential), plus of course, price.
Many thanks for responding.
Patrick
P.S. do your BSF look like the picture I've posted?