Prime-Line 9063153 Carriage Bolts, 5/16 In.-18 X 4 In., A307 Grade A Zinc Plated Steel (50 Pack)

★★★★★ 4.6 144 reviews

US$4.78
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Product details

Management number 250201424 Release Date 2026/09/17 List Price US$4.78 Model Number 250201424
Category

Carriage bolts feature a slightly rounded head and have no exposed sharp edges when fully fastened. Due to that reason, they are often used when a more aesthetic look is desired. They are commonly used on docks and on playground equipment or in cases where it may be difficult to reach the bolt head with a tool. The square shoulder on carriage bolts help to hold it in place while the nut is fastened.

  • Size: 5/16 inch-18 X 4 inch
  • Features a smooth rounded head as opposed to a standard hex head
  • Square shoulder allows for nut to be tightened or loosened
  • Often used in cases where a protruding bolt head could cause injury
  • Nuts and washers not included, ensure washers and nuts are same diameter
  • Thread Type: Coarse, Thread Class: UNC-2A, Point Style: Blunt
  • Specification(s) Met: ASME B18.5 and ASTM A307A
UPC 049793111722
ASIN B074ZNSFMZ
Brand PRIME-LINE
Color Zinc
Model 9063153
Set Name Prime-Line 50-Piece Zinc Plated Carriage Bolt Set (5/16 in. -18 X 4 in.)
Head Type Domed
Size Name 5/16 in. -18
Unit Count 1 Count
Part Number 9063153
Thread Size 5/16"-18
Thread Type Unc
Drive System Square
Finish Types Zinc Plated
Grade Rating Grade A
Manufacturer Prime-Line
Thread Class Others
Thread Style Right Hand
Fastener Size 5/16"
Fastener Type Carriage Bolt
Item Diameter 0.31 inches
Item Hardness Rockwell B70
Material Type Alloy Steel
Item Type Name Carriage Bolt, 5/16 in-18 X 4 in, Zinc Plated Steel, Pack of 50
Exterior Finish Zinc
Item Dimensions 4 x 4 x 6 inches
Number Of Items 50
Thread Coverage Fully Threaded
Number of Pieces 50
Outside Diameter 0.31 inches
Screw Head Style Domed
Screw Point Style Blunt
Manufacturer Grade Grade A
Included Components Carriage Bolt
Compatible Groove Diameter 0.31 inches
Global Trade Identification Number 00049793111722

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