1/4"-20 x 1 3/4" Carriage Bolts / Full Thread / Grade 8 / Zinc Yellow
$435.83
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Product Description
1/4"-20 x 1 3/4" Carriage Bolts / Full Thread / Grade 8 / Zinc Yellow
Specifications
| Material | Alloy Steel |
|---|---|
| Finish | Zinc Yellow |
| Grade | Grade 8 |
| Size | 1/4"-20 |
| Length | 1 3/4" |
| Head Style | Round Head |
| Drive | No Drive |
| Thread Pitch | 20 TPI |
| Thread Class | Coarse |
| Hardness | C33-C39 |
| Tensile Strength | 150 ksi (1034 MPa) |
| Standard | ASME B18.5 |
| RoHS Compliance | RoHS Compliant |
| Measurement System | Inch |
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
1/4"-20
Thread Type
Coarse (UNC)
Material
Alloy Steel
Grade
Grade 8
Head Style
Round Head
Thread Pitch
20 TPI
Tensile Strength
150 ksi (1034 MPa)
Hardness
C33-C39
SKU
1428C8-1250