This may be helpful: http://www.hydraulic-supply.com/html/productline/prodcat/banjo-fittings.htm
The type of fitting is called "banjo" due to the shape of some but not all the parts. The banjo blocks on my truck are quite rectangle in shape. Another place is here: http://www.brakeconnect.com/product-category/banjo-bolts
I hope this helps

Steve H