Which piano hinge is which?

[gotyoke]

My fuse kit came with two different kinds of piano hinge, each 6-feet long. I don't know enough about these things to be sure which is which.

AN257-P3X6' - HINGE X 6'
HINGE PIANO 1/8X6' - 0.125 THICK PIANO HINGE

One is shinier and sturdier, with a wider flange. The other has MS20257-3 stamped on it. All my assumptions point to AN257-P3 being the same as MS20257-3, but I want to be sure before I cut anything.

 

[stigaro]

I believe MS20257P3 (aka AN257) is aluminum and used for the seat hinges. The other one is stainless steel and used for attaching the cowl to the firewall.

 

[gotyoke]

I believe MS20257P3 (aka AN257) is aluminum and used for the seat hinges. The other one is stainless steel and used for attaching the cowl to the firewall.

Ah, yes, that seems to track. Thanks!