Hex Cap Screws Grade 5

GRADE-5 HEX CAP SCREW

Description

A cap screw made from medium carbon steel and heat-treated.

Applications/Advantages

Has greater tensile strength than a Grade-2. Yield-to-tensile ratio is the lowest of all heat treated steels.

Heat Treatment

Grade-5 cap screws shall be heat treated, oil or water quenched, at the option of the manufacturer, and tempered at a minimum

tempering temperature of 800°F.

Material

Medium carbon steel. Use of an alloy steel is also acceptable.

Core Hardness

1/4 through 1 in. diameter, all lengths: Rockwell C25 - C34.

1-1/8 through 1-1/2 in. diameter, all lengths: Rockwell C19 - C30.

Surface Hardness

1/4 through 1 in. diameter, all lengths: Rockwell 30N54 maximum.

1-1/8 through 1-1/2 in. diameter, all lengths: Rockwell 30N50 maximum.

Proof Load

1/4 through 1 in. diameter, all lengths: 85,000 psi.

1-1/8 through 1-1/2 in. diameter, all lengths: 74,000 psi.

Yield Strength

1/4 through 1 in. diameter, all lengths: 92,000 psi. minimum

1-1/8 through 1-1/2 in. diameter, all lengths: 81,000 psi. minimum

Tensile Strength

1/4 through 1 in. diameter, all lengths: 120,000 psi. minimum

1-1/8 through 1-1/2 in. diameter, all lengths: 105,000 psi. minimum

Elongation

14% minimum (all diameters)

Reduction of Area

35% minimum (all sizes)

Plating

Zinc,HDG,Plain,Dacrotized,Teflon,Colorful Dye