4 Pack Alloy Steel Shoulder Bolts 5/16 Inch Shoulder Diameter 1-1/4 Inch Shoulder Length 1/4-20 UNC Hex Socket Head Shoulder Screws Bolts Durable Heavy Duty Mechanic Grade

Alloy Steel Shoulder Bolts Pack for Heavy-Duty Use
✔️ 4-pack alloy steel shoulder bolts: 1-1/4" L, 5/16" dia, 1/4-20 UNC

These alloy steel shoulder bolts function as pivot joints that enable free rotation between two parts. They’re commonly used in automotive, die-punch, and general machinery assemblies where a sturdy, high-torque fastener with precise alignment is needed.

✅ Material: Alloy Steel
✅ Thread Type: UNC
✅ Screw Thread: 1/4-20
✅ Shoulder Size: 1-1/4" x 5/16" (LxD)
✅ Package Contains: 4 x Shoulder Screws Bolt

💡 What is a shoulder bolt used for in mechanical assemblies? They serve as a sturdy pivot and alignment pin in many machines. - precise pivot and rotation control for moving parts - helps maintain alignment while allowing free rotation - handles higher torque with hex socket head for tight fastening