3/4-10 x 3 1/2
SKU: 7556C8-75 In Stock

3/4"-10 x 3 1/2" Carriage Bolts / Full Thread / Grade 8 / Zinc Yellow

$413.48
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Product Description

3/4"-10 x 3 1/2" Carriage Bolts / Full Thread / Grade 8 / Zinc Yellow

Specifications

MaterialAlloy Steel
FinishZinc Yellow
GradeGrade 8
Size3/4"-10
Length3 1/2"
Head StyleRound Head
DriveNo Drive
Thread Pitch10 TPI
Thread ClassCoarse
HardnessC33-C39
Tensile Strength150 ksi (1034 MPa)
StandardASME B18.5
RoHS Compliance RoHS Compliant
Measurement SystemInch
RoHS Compliant

Frequently Asked Questions

What is the difference between Grade 5 and Grade 8?
Grade 5 (medium carbon steel, 120 ksi tensile strength) is suitable for most industrial applications. Grade 8 (alloy steel, 150 ksi tensile strength) is used for high-strength applications like automotive suspension and machinery. Grade 5 hex heads have 3 radial lines; Grade 8 has 6 radial lines.
Why does a carriage bolt have a square neck?
The square neck beneath the round head wedges into the wood as the nut is tightened, preventing the bolt from rotating. This allows tightening from one side only — perfect for deck and fence construction where you can not access the back side of the bolt.

Carriage Bolts / Full Thread / Grade 8

Family: C8FT

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Technical Specifications

Thread Size
3/4"-10
Thread Type
Coarse (UNC)
Material
Alloy Steel
Grade
Grade 8
Head Style
Round Head
Thread Pitch
10 TPI
Tensile Strength
150 ksi (1034 MPa)
Hardness
C33-C39
SKU
7556C8-75