The nylon shell acts as an insulator when used in electrical applications

1/4-20 x 4 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (450)

8 x 1 1/4 Simpson Mod Truss-Head Self-Drilling Wire Lath Screws - Phillips Drive 410 SS - Carton (1000)

6 x 1 1/4 Phillips Bugle Decking Screws W

1/4-28 x 2 3/4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (100) M10-1.50 Socket Cap Screws 12.9 Alloy Plain DIN 912 The nylon shell acts as1 4 28 x 2 3 4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (100) . Grade 8 Hex Cap Screws are manufactured in the USA from medium carbon alloy steel. In diameters 1 4 to 1 1 2 inches our Grade 8 material meets or exceeds SAE J429 Grade 8 specifications. Diameters over 1 1 2 inches meet or exceed ASTM A354 Grade BD. All material is manufactured with rolled threads. Yellow zinc plated bolting will meet or exceed ASTM F1941. Typical hardness on