Special nails for special jobs are available from Demby Rod and Fastener Mfg., Berea, Ohio. You can get nails in standard lengths up to 24 in. long and diameters up to 1/4-in. And, if you need them still longer, you can order them custom made to whatever length you need.
Besides long nails, Demby also produces special fasteners, such as thru-bolts, threaded studs, hook bolts, eye bolts, U-bolts and special order designs in lengths up to 72 in., and in diameters up to more than 1-in.