The RackGold Black 10-32 Rack Screws and Slide-on Cage Nut Retainers are a perfect fit every time! These superior, USA Made, quality screws and cage nut retainers should be your only choice for installing rackmount devices such as shelves, cable managers, servers, and other network, A/V and electronic equipment. Mfr # G1032-DSW-B50