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TONGUE AND GROOVE WELD
In designing parts for vibration welding, sufficient clearance must be provided in the joint.Tongue and groove joints are commonly used for vibration welding. When a weld flash is unacceptable, a flash trap can be designed. The trap should be volumetrically sized to the amount of material displaced during welding. Tongue and Groove joints should have 2.54 mm wall and weld tongue thickness to ensure a weld strength equal to wall strenght.
( Plastic Designs Library, Handbook of Plastics Joining: A Practical Guide, p.24)

U-Bolts:
Installed "prevailing torque", U-shaped, stamped-metal nuts for the retaining screws. The nuts have metal tabs that partly restrict tightening of the screw, so when the screw is tightened through the restriction, it won't loosen. If you must remove remove a screw through a prevailing-torque nut, you can reinstall it up to two times.
(Popular Mechanics, Oct 1982, p.164)

Depression Molding:
Depression Molding consists in the simultaneous use of vacuum and atmospheric pressure. The mold is coated with release agent and the wet layup applied by either hand or spray process. Then pressure is exerted by means of porous die covered by a flexible membrane (generally made from neoprene) and a vacuum pump which sucks air out of the membrane. Heat is frequently applied to speed up the cure. If only one smooth surface is necessary, the die can be suppressed and the pressure is exerted by the flexible membrane alone. This process is also known as vacuum molding or bag molding.
(Jean-Marie Berthelot, Composite Materials: Mechanical Behavior and Structural Analysis, p. 57)

Full-Mix Production:
In Manufacturing the demand may vary from one period to the other, a leve output may be maintained using a stable production rate while allowing inventory level to vary. In JIT production, a level schedule (usually constructed monthly) ideally means planning to produce a full mix production of models each day (or week or some other short period). The production of full-mix of products in a short interval reduces inventory buildup for each model. As demand conditions change, a full-mix schedule can respond more quickly to changes.
(Paul M. Swamidass, Encyclopedia of Production and Manufacturing Management, p.361)