1/4"-20 x 5/8" Carriage Bolt, Full Thread / Grade A Steel / Hot Dip Galvanized / ASTM A307 Grade A; ASME B18.5
$362.25
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Product Description
1/4"-20 x 5/8" Carriage Bolt, Full Thread / Grade A Steel / Hot Dip Galvanized / ASTM A307 Grade A; ASME B18.5
Specifications
| Material | Steel |
|---|---|
| Finish | Hot Dipped Galvanized |
| Grade | A307 Grade A |
| Size | 1/4"-20 |
| Length | 5/8" |
| Head Style | Carriage (Round) |
| Drive | No Drive (Square Neck) |
| Thread Pitch | 20 TPI |
| Thread Class | Coarse |
| Hardness | B69 - B100 |
| Tensile Strength | 60000 |
| Standard | ASME B18.5 |
| RoHS Compliance | RoHS Compliant |
| Measurement System | Inch |
RoHS Compliant
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.
Carriage Bolt / Grade A Steel / Hot Dip Galvanized
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Technical Specifications
Thread Size
1/4"-20
Thread Type
Coarse (UNC)
Material
Steel
Grade
A307 Grade A
Head Style
Carriage (Round)
Country of Origin
Import
Thread Pitch
20 TPI
Tensile Strength
60000
Hardness
B69 - B100
SKU
490018-3500