Steel Manhole Cover, Round 48 x 13,1/2 Steel Lid, Bolt-Down

Manhole cover - Wikipedia

Hex nuts are to be used with machine bolts to adhere facing materials to prevent tension and shear movement. Specifically in wood-to-wood, wood-to-metal or metal-to-metal applications. Galvanized zinc grade 2 steel hex nuts are recommended for most general uses and are corrosion-resistant. Be sure to pre-drill any holes and to use washers and bolts that are a similar grade and finish.

Hillman 810512 Hex Nut Galvanized, 1/2-13, 50 Pack

EMCO Wheaton Manholes - Enviro Design Products

Catch Basin Grates - Available in Square, Round, Retectangular, and Double

Service Station Hardware Manholes Replacement Covers

Steel Manhole Covers & Frames Enviro Design Products - Enviro Design Products

Pipe, Carbon Steel, A106 B, Seamless, Cut To Length

Round Metal Vent Cover, Quality Grilles

Steel Manhole Covers & Frames Enviro Design Products - Enviro Design Products

Steel Manhole Cover, Round 48 x 13,1/2 Steel Lid, Bolt-Down

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Reed Tool MH36 Manhole Cover Hook, 36-Inch - 2303 : Industrial & Scientific