1 x 3-1/2" Plow Bolts Grade 8 Plain High Strength 150,000 PSI (Quantity: 50) #3 Dome Head, Coarse Thread, 1-8 x 3-1/2"

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Management number 211256527 Release Date 2026/04/04 List Price $128.80 Model Number 211256527
Category

Plow bolts are a specialized type of fastener. These are similar to carriage bolts, but the head of a plow bolt is concave or flat. The underside of the head tapers down into a cone-shape which is engineered to fit into a countersunk recess

  • Diameter-Threads Per Inch: 1-8
  • Length: 3-1/2 inch
  • The #3 dome head on a plow bolt refers to the specific shape and size of the bolt head. The "dome head" means that the bolt head is slightly rounded rather than flat.
  • A Grade 8 plow bolt with a strength of up to 150,000 psi (pounds per square inch) is typically used in applications requiring extreme strength and durability. The high strength rating means the bolt can withstand intense stresses and heavy loads without breaking, bending, or deforming.
  • A plow bolt is a type of fastener typically used in heavy machinery, particularly for attaching plow blades to their frames. They have a flat, countersunk head that sits flush with the surface to prevent any obstructions or wear on the bolt head itself. This makes them ideal for applications where the bolt needs to stay out of the way of moving parts, such as the cutting edge of a plow or a heavy construction machine.
  • In applications like earthmoving, construction, or mining equipment, such as bulldozers, plows, and graders, the components are exposed to massive forces during operation. A Grade 8 plow bolt ensures the equipment remains reliable under these stresses.
  • High-strength bolts are more resistant to shear and tensile stress, meaning they are less likely to fail under repeated heavy loads, vibrations, or impact. This is essential in heavy machinery that regularly encounters harsh working conditions, such as rocky terrain or heavy debris.
  • In equipment that requires tight tolerance and precise performance, using a weaker bolt could lead to fastener failure. A high-strength bolt ensures that performance is not compromised, even under the toughest conditions.
  • Stronger bolts last longer in demanding environments, meaning less frequent replacement and reduced maintenance. This increases operational efficiency and reduces costs related to downtime and part replacement.
  • In applications where failure could lead to equipment damage, costly downtime, or even injury, using a high-strength bolt is crucial for ensuring the safe operation of the equipment over time. Grade 8 bolts provide additional peace of mind because they are engineered to withstand high levels of force.
UPC 696297880779
Brand Newport Fasteners
Size Name 3.5 inches
Unit Count 50.0 Count
Item Weight 31 Pounds
Part Number 861818-35
Thread Size 1"-8
Thread Type Unc
Manufacturer Newport Fasteners
Thread Style Right Hand
Fastener Type Plow Bolt
Material Type Alloy Steel
Exterior Finish Plain
Thread Coverage Fully Threaded
Screw Head Style Dome
Manufacturer Grade Grade 2

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