5/16"-18 x 2" Ribbed Neck Carriage Bolts / Grade 5 / Zinc
- Steel
- Grade 5
- Zinc
- 18 TPI · Coarse
- ASME B18.5
$181.35
$2.36 / pc
Package of 77
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Product Description
5/16"-18 x 2" Ribbed Neck Carriage Bolts / 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.
$181.35
$2.36/pc
Ribbed Neck Carriage Bolts / Grade 5 / Zinc
Family: CR5
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5/16"-18 x 2" Ribbed Neck Carriage Bolts / Grade 5 / Zinc
SKU: 3132CR5-77
Technical Specifications
Thread Size
5/16"-18
Thread Series
UNC
Thread Pitch
18 TPI
Thread Coverage
Full Thread
Length
2"
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
Head Diameter (in)
0.688–0.719
Measurement System
Inch
Head Height (in)
0.156–0.176
SKU
3132CR5-77
https://www.ecomfasteners.com/products/5-16-18-x-2-ribbed-neck-carriage-bolts-grade-5-zinc · Printed