94355A130 - NBS 4-40 Set Screw For Rear Takedown Detent Spring - 1/8" Long - SS - AR15Discounts
4-40 x 3/32" Cup Point Set Screws, Stainless Steel | AFT Fasteners
4-40 x 1/4 Socket Set Screw Cup Point 18-8 (A2) Stainless Steel – FMW Fasteners
Amazon.com: Socket Set Screw, Cup Point, 4-40 x 3/32", Alloy Steel, Black Oxide, Hex Socket (Quantity: 100) Coarse Thread, 4 Grub/Blind/Allen/Headless Screw, Length: 3/32 inch : Industrial & Scientific
4-40 x 1/8" Coarse Thread Slot Set Screw Case Hardened Zinc Plated | eBay
4-40 Socket Set Screws w/ Cup Point, Alloy Steel w/ Black Oxide, Coarse Thread | eBay
4-40 Stainless Steel Cone Point Set Screws
4-40 x 1/8 inch Flat Point Set / Grub Screws (ANSI B18.3) - 316 Stainless Steel: Accu.co.uk: Precision Screws
4-40 Thread Size, 1/4 in Overall Lg, Socket Set Screw - 5MNX2|U51260.011.0025 - Grainger
Everbilt #4-40 x 1/4 in. Coarse Plain Socket Set Screw 805488 - The Home Depot