Hillman Expansion Nut Neoprene Rubber Leakproof Blind Fastening 1/4"-20 x 5/8" Black – 15 Pack

Hillman Expansion Nut Neoprene Rubber Leakproof Blind Fastening 1/4"-20 x 5/8" Black – 15 Pack

• LEAKPROOF BLIND FASTENING: Expansion nuts seal bolt holes to prevent leaking; the rubber body expands behind the surface to create a watertight seal.
• SAFE FOR BLIND AND CLOSED-END HOLES: Designed for use in blind holes and closed-end surfaces where backside access is not possible during installation.
• RUBBER AND STEEL CONSTRUCTION: Neoprene rubber combined with a steel threaded insert absorbs vibration and seals the bolt hole reliably.
• PANEL AND MARINE APPLICATIONS: Ideal for panel mounting, equipment installation, automotive components, and marine use requiring sealed fastening.
• TRUSTED HILLMAN FASTENING SOLUTIONS: Hillman hardware products are engineered for consistent quality, dependable performance, and reliable fastening across construction, repair, and home improvement applications.