4-40 x 0.375 in. Socket Head Cap Screw - AndyMark, Inc
Amazon.com: 4-40 x 3/8" Flat Head Socket Cap Screws, Allen Socket Drive, Alloy Steel, Full Thread, Black Oxide, Machine Thread, Quantity 100 : Industrial & Scientific
4-40 Socket Head Cap Screws Allen Hex Drive Stainless Steel Bolts Quantity 100 | eBay
4-40 Titanium Short Socket Head Screws | TiConnector
Amazon.com: #4-40 UNC Flat/Countersunk Head Socket Screws,100-Piece,Stainless Steel,Full Thread,Right Hand (#4-40 x 1/4") : Industrial & Scientific