Plastic Nylon Male Blanking Plug with Hex Nut Waterproof Seal M12-M32 Black | eBay
3/8-16 Nylon Hex Head Cap Screws | The Nutty Company, Inc.
Everbilt 1/4 in.-20 x 1 in. Nylon Hex Bolt (2-Pack) 808388 - The Home Depot
Buy 1STec 4 x M10 x 50 mm Strong Galvanised Satellite Anchor Nylon Mungo Wall Plug + Heavy Duty Coach Screw with 13mm HEX Bolt Head for Fixing Aerial Mast Sky Dishes
Plastic Hex Head Plugs
A4 STAINLESS HEXAGON HEAD WOOD COACH SCREWS BOLTS NYLON RAW WALL PLUG M6 M8 M10 | eBay
MBSH Nylon Frame Plug Zinc Hex Screw
HEX HEXAGON HEAD WOOD SCREW COACH SCREWS BOLTS ZINC PLATED WITH NYLON RAWL PLUG | eBay
Extended nylon plug with 3 wings and screw hexagonal head
Caplugs ZTH71KA1 Plastic Hex Socket Threaded Plug. TH-7, HDPE, to Plug Thread Size 1/2-14", Black (Pack of 50): Amazon.com: Industrial & Scientific
Source M25*1.5 hexagon nylon screw plugs on m.alibaba.com
5 x M8 x 50mm Hex HD Coach Screws + 5 x Washers + 5 x M10 Nylon Plugs
MBSH Nylon Frame Plug Zinc Hex Screw
HEX HEXAGON HEAD WOOD SCREW COACH SCREWS BOLTS ZINC PLATED WITH NYLON RAWL PLUG | eBay