zinc plated in either a flat or round head style

A307 Grade A Carriage Bolts are manufactured from low carbon steel to meet or exceed ASTM A307 Grade A

1/2-13 x 12 Grade 8 Hex Cap Screw Yellow Zinc Plated

1-8 x 6 A307A Hex Tap Bolt Zinc Plated

6-20 x 1 7/8 Strong-Point Phillips Bugle Head Self Drilling Drywall Screw Zinc Plated (4000) 7/8-9 Grade 8 Hex Cap Screws Yellow Zinc Plated zinc plated in either a6 20 x 1 7 8 Phillips Drywall Self Drill Screw Zinc Plated (4000) . 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.