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Language
English
English
Français
Bolts
Carriage
Elevator
Flange
Hexagonal
Plow
Square
Structural A325 | A490
Nuts
ACME
Cap
Castel
Conical
Conical Flange
Coupling
Flange
Hexagonal
K-Lock
Nylon Insert
Square
Tee
Thread Cutting
Weldable
Wing
Washers
Belleville
Bevel
Countersunk
External Tooth
Fender
Internal Tooth
Lock
Push Cap
Retaining
SAE [Smaller Outside Diameter]
Thick
USS [Standard Diameter]
Socket Screws
Button Socket Head
Flat Socket Head
Set Screw
Socket Head
Shoulder Screw
Square Head Screw
Flat Torx Trailer Screw
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Collection:
Black Phosphate
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1 of 7 products
Flat Head Trailer Floor Wood-Metal Thread-Forming Screw Black-Phosphate Steel 5/16-18 * 3" Grade 8 [Cup Point] [Allen Drive]
Flat Head Trailer Floor Wood-Metal Thread-Forming Screw Black-Phosphate Steel 5/16-18 * 3" Grade 8 [Cup Point] [Allen Drive]
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1.24 $ CAD
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1.24 $ CAD
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![Flat Head Trailer Floor Wood-Metal Thread-Forming Screw Black-Phosphate Steel 5/16-18 * 3" Grade 8 [Cup Point] [Allen Drive]](http://rjm-fasteners.myshopify.com/cdn/shop/files/Image_Jun_6__2025__11_30_02_AM-removebg-preview_c2ecbace-6b46-4647-b5c2-958a77d0d7ea.png?v=1749223918&width=533)