4935-01-025-5016

5330-99-542-3437 5330995423437 995423437 is a nonmetallic circular item with an aperature, having a solid round cross-section. they are used primarily for sealing. for items with other than round cross section, see packing,preformed. for noncircular items with a round cross-section, see seal,nonmetallic round section and rubber,round section.

5985-01-542-3437 5985015423437 015423437 is an electrical device consisting of a resistance element or a conducting polymer and may include insulating material, sheathing, supports, electric terminals and automatic controls to regulate the amount of heat generated or to detect ice build up or low temperatures. these heaters are designed to protect antennas, antenna pedestals or radomes from the effects of ice or low temperatures. includes antenna heaters used in space, on land, aircraft and watercraft. excludes items used as residential, industrial, or commercial space heaters, fluid heaters or solid material heaters.

5365-14-542-3437 5365145423437 145423437 is a thin flat metal or plastic item of various peripheral shapes having a solid or laminated cross-section. it is designed to maintain a predetermined distance between two surfaces. for round items without a hole and having a solid rectangular cross-section use disk, solid, plain. items with either (1) a solid (not laminated) cross-section, or (2) a non-separable laminated cross-section with one hole centrally located, must have a thickness less than 0.006 inch (0.152 mm) for items less than 1/4 inch (6.35 mm) outside diameter or shortest distance across peripheral flats, and less than 0.016 inch (0.406 mm) for items 1/4 inch (6.35 mm) or more outside diameter, or shortest distance across peripheral flats. for items with thickness greater than those indicated above, see spacer, plate; washer, flat and spacer, ring. when thickness and/or outside diameter or shortest distance across peripheral flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance. see also shim stock, laminated; shim stock assortment, gasket; and bearing, washer, thrust.

5330-99-542-3437 5330995423437 995423437

5985-01-572-8619 5985015728619 015728619 is an electrical device consisting of a resistance element or a conducting polymer and may include insulating material, sheathing, supports, electric terminals and automatic controls to regulate the amount of heat generated or to detect ice build up or low temperatures. these heaters are designed to protect antennas, antenna pedestals or radomes from the effects of ice or low temperatures. includes antenna heaters used in space, on land, aircraft and watercraft. excludes items used as residential, industrial, or commercial space heaters, fluid heaters or solid material heaters.