Carriage bolts Grade 5

Grade 5 Carriage Bolts

Description

Grade-5 Carriage bolt made from medium carbon steel and heat-treated.

Applications/Advantages

Same design advantages as a low carbon carriage bolt but with

significantly greater load carrying capacity.

Same design advantages as a Grade-5 carriage bolt but with

greater load carrying capacity.

Material

AISI 1030 - 1050 or equivalent steel.

Heat Treatment

Bolts shall be heat-treated, oil or water-quenched, at the option of the manufacturer, and tempered at a minimum temperature of 800° F.

Core Hardness

1/4 through 1 in. diameters: Rockwell C25 - C34

Surface Hardness

1/4 through 1 in. diameters: Rockwell 30N54 maximum

Proof Load

1/4 through 1 in. diameters: 85,000 psi.

Yield Strength

1/4 through 1 in. diameters: 92,000 psi. minimum

Tensile Strength

1/4 through 1 in. diameters: 120,000 psi. minimum

Elongation

14% minimum

Reduction of Area

35% minimum (all sizes)

Minimum Thread Length

The minimum length of thread shall be equal to twice the basic bolt diameter plus 0.25 in. for bolts 6 in. or shorter, and twice the diameter plus 0.50 in. for bolts longer than 6 in..

Plating

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