Quality items from Bonanzaโ€™s top-rated sellers.

ortusenterprises' booth earned a 99.9% satisfaction rating for providing an excellent experience from start to finish. View booth >>

Rendered at 17:13:08 05/16/25
Full-size item image
Primary image for 5/16"-18 x 7-1/2" Zinc Grade 2 / A307 Carriage Bolts (50 pcs)

5/16"-18 x 7-1/2" Zinc Grade 2 / A307 Carriage Bolts (50 pcs)

$54.58
$55.13 More info

Shipping options

Estimated to arrive by Tue, May 27th. Details
$6.41 via Standard shipping (1 to 5 business days) to United States

Offer policy

OBO - Seller accepts offers on this item. Details

Return policy

Partial refund available within 30 days

Purchase protection

Payment options

PayPal accepted
PayPal Credit accepted
Venmo accepted
PayPal, MasterCard, Visa, Discover, and American Express accepted
Maestro accepted
Amazon Pay accepted
Nuvei accepted

Shipping options

Estimated to arrive by Tue, May 27th. Details
$6.41 via Standard shipping (1 to 5 business days) to United States

Offer policy

OBO - Seller accepts offers on this item. Details

Return policy

Partial refund available within 30 days

Purchase protection

Payment options

PayPal accepted
PayPal Credit accepted
Venmo accepted
PayPal, MasterCard, Visa, Discover, and American Express accepted
Maestro accepted
Amazon Pay accepted
Nuvei accepted

Item traits

Category:

Other Fasteners

Quantity Available:

11 in stock

Condition:

New

UPC:

738287010909

Brand:

Unbranded

Material:

Zinc

Finish:

Zinc

Listing details

Shipping discount:

Items after first shipped at flat $0.50

Posted for sale:

More than a week ago

Item number:

1719410908

Item description

Diameter: 5/16" Length: 7-1/2" Material: Steel Finish: Zinc Head Style: Carriage Thread Size: 18 (Coarse) Thread Length: Partial Hardness: Grade 2 / A307 Type: Carriage Bolt Square-Depth: 3/16" Box of 50. A carriage bolt has a domed or countersunk head, and the shank is topped by a short square section under the head. The square section grips into the part being fixed (typically wood), preventing the bolt from turning when the nut is tightened.