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Home / Products / Bolts & Screws / Shoulder Screws / Carbon Steel 1-8 UNC x 4" Metric Shoulder Bolts
Shoulder Screws
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Struggling to find the right standard part? Let us engineer it. From automotive bolts to unique shaped components, we specialize in custom runs based on your samples or drawings.

  • Carbon Steel 1-8 UNC x 4
  • Carbon Steel 1-8 UNC x 4
  • Carbon Steel 1-8 UNC x 4
  • Carbon Steel 1-8 UNC x 4
  • Carbon Steel 1-8 UNC x 4
  • Carbon Steel 1-8 UNC x 4

Carbon Steel 1-8 UNC x 4" Metric Shoulder Bolts

Carbon Steel 1-8 UNC × 4" Metric Shoulder Bolts (Shoulder Screws) are precision-ground fasteners that serve the dual purpose of positional reference and load transmission in high-accuracy mechanical assemblies. 
The smooth, ground shoulder provides an exact locating surface for rotating or sliding components — springs, rollers, levers, linkages, and bearing mounts — while the threaded section below secures the assembly with controlled clamping force.

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    • Specifications
    • Product Details
    • Company Profile
    Product Name Shoulder Screw
    Specification： Measurement System: Metric/ Imperial System
    Grade: 12.9
    Material： Alloy steel
    thread type: M6-M16; 1/4"; 5/16"; 3/8";1/2"; 5/8";etc。
    Length: 15-300mm
    Surface: Black oxide
    Optional material: SCM435/40Cr 
    Standard: BS2470-1973
    Customization: OEM/ODM Accepted
    Applicatioon: General Industry/ Precision Machinery Field
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