Thread size is 9/16-18
An item of solid one-piece construction, designed to restrict the flow of a fluid through it. It has an orifice of a smaller size than the diameter of flow into it. Excludes items such as valve (1), (as modified); and others with an adjustable orifice. Excludes pipe, tube, or hose fittings with restricted passages and items designed to test fluid flow. For items containing screens or filters, see restrictor unit, fluid flow.
NSN 5910-01-377-3402
NSN 5985-01-498-4409
NSN 5925-01-469-3103
NSN 5915-00-815-0527
NSN 6645-00-891-7392
NSN 6645-01-422-1374
NSN 5905-00-891-7283
NSN 5960-01-285-2152
NSN 7035-01-572-0013
NSN 5996-00-481-1486
NSN 6130-01-392-3491
NSN 6650-01-251-8520