This procurement is for a source-controlled check valve (NSN 4820011455907), with a quantity of 51 EA to be delivered to DLA Distribution Depot Oklahoma by 0161 days after order. Approved sources are 75201 458-50004-503, 75201 8100-1, and 79318 458-50004-503. The item must meet the requirements of the cited drawing, and digitized drawings and military specifications/standards may be retrieved or ordered electronically. The solicitation is an RFQ available via the provided link, and hard copies are not available. Quotes must be submitted electronically by responsible sources.