split bolt anchor

Marine screws are locked in place thanks to their "teeth" (the thread indentations will resist back-out even after prolonged vibration)

The heavy construction affords efficient drilling in stainless steel and other hard materials

1-8 x 2 1/4 Grade 5 Hex Cap Screw Zinc Plated

7/8-9 x 3 1/2 Flat Socket Cap Screw Alloy

3/4-10 x 2 1/4 Socket Cap Screw Zinc Square Bugle Coarse Drywall Screws Black Phosphate split bolt anchor3 4 10 x 2 1 4 Socket Cap Screw Zinc . Alloy Socket Head Cap Screws from Brighton Best. Hardness of RC 38 43, meets or exceeds ASTM A574. Manufactured from heat treated alloy steel, 1960 series.