The Aluminum SMC Bong Angle pitons were available in three sizes 2 1/2", 3" and 4". Corrosion resistant iridite finish from late 1960s and the aluminum Bong Angles were discontinued before 1978. I believe the aluminum Bongs remained with the same finish and did not change in 1972. The two SMC Bong Angle pitons shown to the right are from the late 1960s and were donated by Jim Bridwell. Aluminum and steel 3". |
SMC short and long steel Shallow Angle pitons. Sometime between 1973 and 1978 SMC added six sizes of Shallow Angle steel pitons to their piton inventory. On all six of the Shallow Angle pitons manufactured the metal thickness remained the same. It is how much the blade on the piton is bent which creates the piton thickness. However all six pitons have different overall lengths. The .4 Short Shallow Angle piton (orange stripe) donated by Art McCarthy. |