5/16"-18 x 1 1/4" Carriage Bolt, Full Thread / Grade A Steel / Hot Dip Galvanized
- Steel
- A307 Grade A
- Hot Dipped Galvanized
- 18 TPI · Coarse
- ASME B18.5
$84.08
$0.841 / pc
Package of 100
Volume pricing: the bulk box price per piece is shown above. Need more? Request a quote →
Net 30 terms for approved accounts. Apply for wholesale →
Product Description
5/16"-18 x 1 1/4" Carriage Bolt, Full Thread / Grade A Steel / Hot Dip Galvanized
Frequently Asked Questions
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.
How long will the galvanized coating last outdoors?
Hot Dipped Galvanized fasteners have a thick zinc coating that provides excellent outdoor corrosion protection — typically 20-50+ years in moderate environments. For coastal/marine use, consider stainless steel for longer life.
$84.08
$0.841/pc
Carriage Bolt / Grade A Steel / Hot Dip Galvanized
Family: 490
Select size and quantity, then add to cart
Loading filters...
|
Loading family products...
|
5/16"-18 x 1 1/4" Carriage Bolt, Full Thread / Grade A Steel / Hot Dip Galvanized
SKU: 490037-100
Technical Specifications
Thread Size
5/16"-18
Thread Series
UNC
Thread Pitch
18 TPI
Thread Coverage
Full Thread
Length
1 1/4"
Material
Steel
Grade
A307 Grade A
Finish
Hot Dipped Galvanized
Head Style
Carriage (Round)
Standard
ASME B18.5
Tensile Strength
60000
Hardness
B69 - B100
Measurement System
Inch
SKU
490037-100
https://www.ecomfasteners.com/products/5-16-18-x-1-1-4-carriage-bolt-full-thread-grade-a-steel-hot-dip-galvanized-astm-a307-grade-a-asme-b18-5 · Printed