See all Screws - 5/16" - 3-7/8" | SFS Group USA, Inc

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Self-drilling fastener with countersunk head and partial thread for timber applications.

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Self-drilling fastener with combined hexagon head and full thread for timber applications.

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Unique self-drilling fastener as being the leading method for wood-concrete composite ceilings.

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See all Screws 5/16" - 3-7/8"