46 C.F.R. § 160.043-4 Construction and workmanship.
Title 46 - Shipping
(a) Blade. The blade shall be not less than 0.095 inch thick at the tang. Shall have a triangular section and sheeps foot point. It shall have a cutting edge approximately 3 (b) Can opener. The can opener shall be not less than 0.072 inch thick at the tang, and 1 (c) Springs. Each spring shall be of a thickness corresponding to the blade it operates, and the back edge and that section of the front edge coming in contact with the end of the tang of the blade shall be polished. (d) Linings and center. Linings and center shall be not less than 0.022 inch in thickness and shall be polished before assembly. (e) Bolsters. The bolsters shall be approximately (f) Shackle. The shackle shall be of conventional design, not less than 0.120 inch in diameter, and shall extend not less than (g) Handles. The handles shall be approximately 3 (h) Rivets and pins. Pins holding the handles to the linings shall be of hard brass, not less than 0.048 inch in diameter. Middle and end pins shall be of hard brass not less than 0.095 inch in diameter. The bolster rivet shall be 18 percent nickel-silver not less than 0.095 inch in diameter. All rivets and pins shall have carefully spun heads. (i) Lanyard. A lanyard 6 feet in length shall be secured to the shackle. (j) Polishing and oiling. After assembly all outside surfaces shall be buffed, and the metal parts polished uniformly. The working parts shall be cleaned and oiled with a good grade of joint oil. (k) Workmanship. Workmanship shall be first class in all respects, and jackknives shall be free from defects which may affect their serviceability.
Title 46: Shipping
PART 160—LIFESAVING EQUIPMENT
Subpart 160.043—Jackknife (With Can Opener) for Merchant Vessels
§ 160.043-4 Construction and workmanship.