Material is mylar (polyester film), having a fair resistance to crushing, cracking, breaking and thread pinch; used swhen flange temperatures are below 250 degrees fahrenheit.
A tubular shaped item with a round or hexagon peripheral shape having two flat bearing surfaces perpendicular to the axis of the centrally located hole. It is designed to maintain a predetermined distance between assembled parts. The item may be with or without flange(s) of any peripheral shape. The overall length must exceed 25 percent of the outside diameter or distance across peripheral flats of the body. (when the length, outside diameter, and/or distance across peripheral flats are designed as a tolerance, the maximum dimension will be used to determine compliance). For items having other than a round or hexagon peripheral shape, see spacer, plate. Excludes items with lubricating features, see bearing, sleeve and bushing, sleeve. See also bushing, tapered; spacer, ring; washer, flat; and washer, (as modified).
Classification: Articles of plastics & articles of other materials of heading 3901 to 3914, nesoi
NSN 5905-01-448-7815
NSN 6135-00-125-5265
NSN 5895-00-895-4446
NSN 5915-00-832-6976
NSN 5835-01-205-6614
NSN 5910-01-269-7177
NSN 5965-00-416-6618
NSN 5910-00-650-2615
NSN 5996-01-426-3948
NSN 6135-01-247-5660
NSN 5945-01-337-2385
NSN 6685-00-979-6257