1010-21-921-4901

5340-01-015-1037 5340010151037 010151037 is a ridge item, usually of flat material, formed into a dihedral angle (generally a right angle) which may be reinforced; it is designed to position, align, or support an item(s) in relation to another. excludes brace (as modified); bracket (1), mounting; and bracket, shelf.

4030-25-015-1037 4030250151037 250151037

3120-14-494-0354 3120144940354 144940354 is a tubular shaped unthreaded item with or without a flange at one end designed to be inserted into a hole to reduce the inside diameter of the hole and to protect the surrounding body structure from damage resulting from stress, strain, and/or vibration. the overall length must exceed 25 percent of the outside diameter or the shortest distance between peripheral flats of the body. includes items which are divided into two or more segments which includes 180 degrees (3.141 radians) or less of the bearing periphery. for items made of rubber, see bushing, nonmetallic. see also bearing, sleeve; bushing, tapered; spacer, sleeve; insulator, bushing; and bushing, electrical conductor. excludes bushing, drill, jig.