(a) Blade, can opener, and springs. The blade shall be made of AISI Type 440B stainless steel, heat treated to show a Rockwell hardness of C55 to C59. The can opener shall be made of AISI Type 420 stainless steel, heat treated to show a Rockwell hardness of C50 to C54. The springs shall be made of AISI Type 420 stainless steel, heat treated to show a Rockwell hardness of C44 to C48.

(b) Linings and center. The linings and center shall be hard brass.

(c) Bolsters and shackle. The bolsters and shackle shall be 18 percent nickel-silver.

(d) Handles. The handles shall be good quality, thermosetting, high impact plastic.

(e) Rivets and pins. The rivets and pins shall be either hard brass or 18 percent nickel-silver as specified in this subpart.

(f) Lanyard. The lanyard shall be cotton rope, 1⁄8 inch nominal diameter.