1/4 x 3 Mushroom Spike Zinc Plated (100)

brick or stone

All material is manufactured with rolled threads

The threaded stud version is available in eight diameters and multiple lengths

1-8 x 3 1/2 Grade 5 Hex Cap Screw Zinc Plated

8-18 x 3 Strong-Point Phillips Bugle Head Self Drilling Drywall Screw Zinc Plated (2000) 3/4-10 Grade 5 Hex Cap Screws Zinc Plated 1/4 x 3 Mushroom Spike8 18 x 3 Phillips Drywall Self Drill Screw Zinc Plated (2000) . Used for many purposes, including the attachment of gypsum board to metal studs, fine threads and the self drilling tip make these screws ideal for penetrating and holding into metal framing studs and other types of metal or aluminum framing.