9390-00-298-6690

5360-21-104-8422 5360211048422 211048422 is an open coiled spring, wound in various forms and from different shapes and types of materials and finished at the ends, designed to provide resistance to compression forces. excludes springs designed for thermal actuation (springs in which the torsion forces are designed to be counteracted by changes in temperature) and spring, reinforcing, hose.

5310-17-104-8422 5310171048422 171048422 is a washer which is round with a centrally located hole. one bearing surface is smooth, flat, and unbroken, the other bearing surface is smooth, unbroken, and is raised to form a curved or spherical contour. see also washer (1), concave. excludes bearing, washer thrust.

8405-15-104-8422 8405151048422 151048422 IMPERMEABILE,UOMO

5905-00-104-8422 5905001048422 001048422 is a resistor whose ohmic value cannot be adjusted or varied. the resistance element consists of high resistance wire (or ribbon) either wound on an insulated form or constructed so as to be self supporting. opposition to the flow of current is an inherent property of the resistance wire and is manifest by the heat dissipation in the resistor. excludes suppressor, ignition interference.

4220-25-104-8422 4220251048422 251048422 is a circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. it may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. excludes felt items but includes multimaterial items in which one of the materials is felt. for solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. for rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. for circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.