Skip to content
Product Description

Part Number: 31C500BCG5Z
Diameter/Pitch: 5/16"-18
Length Under Head: 5"
Grade: Grade 5
Finish: Zinc Clear
Coarse / Fine Threads: Coarse
Partial / Full Threads: Full
Square Width (Max): 0.324"
Click Here for Tech Drawing




BoltsandNuts.com

5/16-18x5" Grade 5 Round Head Square Neck Carriage Bolts Zinc

SKU: 31C500BCG5Z
Product Description

Part Number: 31C500BCG5Z
Diameter/Pitch: 5/16"-18
Length Under Head: 5"
Grade: Grade 5
Finish: Zinc Clear
Coarse / Fine Threads: Coarse
Partial / Full Threads: Full
Square Width (Max): 0.324"
Click Here for Tech Drawing




Promo

B&N Pro eligible item. Save 10% when you join Pro. Learn more.

1
$1.60/pc
Popular
20
$1.19/pc
40
$1.01/pc
100
$0.81/pc
Best Value
300
$0.61/pc
$1.60
B&N Pro $0.00 Member Price
(Shipping $8.95) Add [amount] more for FREE SHIPPING
Father's Day Bundle Sale

Celebrate Father's Day with three specially curated bundles

SALE ENDS: 6/16/26

Diameter Pitch: 5/16"-18
Length Under Head: 5"
Finish: Zinc Clear
Partial Full Threads: Full
Coarse Fine Threads: Coarse
Square Width Max: 0.324"
Grade Material: Grade 5

Free Shipping Over $25

Orders ship from Perry, Ohio. Standard ground shipping is free on orders $25+ within the contiguous United States.

Expedited & Overnight Shipping

Available at checkout. Orders placed before 2 PM ET ship same day from in-stock inventory.

30-Day Returns

Return any unopened item within 30 days for a full refund. Free return labels available for qualifying customers.