3/8"-16 x 1 1/4" Carriage Bolts / Full Thread / Grade 5 / Zinc
- Steel
- Grade 5
- Zinc
- 16 TPI · Coarse
- ASME B18.5
$71.56
$1.07 / pc
Package of 67
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Product Description
3/8"-16 x 1 1/4" Carriage Bolts / Full Thread / Grade 5 / Zinc
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.
$71.56
$1.07/pc
Carriage Bolts / Full Thread / Grade 5
Family: C5FT
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3/8"-16 x 1 1/4" Carriage Bolts / Full Thread / Grade 5 / Zinc
SKU: 3720C5-67
Technical Specifications
Thread Size
3/8"-16
Thread Series
UNC
Thread Pitch
16 TPI
Thread Coverage
Full Thread
Length
1 1/4"
Material
Steel
Grade
Grade 5
Finish
Zinc
Head Style
Round Head
Standard
ASME B18.5
Country of Origin
Import
Tensile Strength
120 ksi (827 MPa)
Hardness
C25-C34
Measurement System
Inch
SKU
3720C5-67
https://www.ecomfasteners.com/products/3-8-16-x-1-1-4-carriage-bolts-full-thread-grade-5-zinc · Printed