Precision Metric Shoulder Screws Stainless Steel 304 With Ground Shaft For Bearing Shaft And Pin Assembly
What Are Shoulder Screws
Shoulder screws also known as stripper bolts or shoulder bolts are precision fasteners with three distinct sections: a head, a smooth precision ground shoulder, and a threaded end. The smooth shoulder acts as a rotating shaft or precision spacer while the threaded end provides secure mounting.
Why Choose Shoulder Screws
Unlike standard screws which only provide clamping force, shoulder screws serve as precision shafts. The ground shoulder surface allows for smooth rotation of bearings bushings gears and pulleys. The shoulder diameter is held to tight tolerances ensuring accurate positioning and consistent performance.
Our Metric Shoulder Screws Range
We offer precision metric shoulder screws in various materials and sizes. Stainless steel 304 shoulder screws provide excellent corrosion resistance for medical and food processing equipment. Alloy steel class 12.9 shoulder bolts offer high strength for heavy duty industrial applications. Headless shoulder screws are available for custom shaft requirements.
Key Design Features
The shoulder is precision ground to tight dimensional tolerances. The surface finish is smooth for low friction rotation. The threaded section is rolled for consistent thread profile and high strength. The shoulder length and diameter can be customized to your specifications.
Applications
Precision shoulder screws are widely used in jigs and fixtures, mold guide pins, bearing shafts, pivot pins, conveyor rollers, gear shafts, cam followers, linkage assemblies, medical devices, food processing equipment, and automotive components. Any application requiring a precision shaft or rotating pin can benefit from shoulder screws.
Material And Specifications
Stainless steel 304 for general corrosion resistance. Stainless steel 316 for marine environments. Alloy steel class 12.9 for high strength applications. Metric thread sizes from M3 to M16. Shoulder diameters from 3mm to 20mm. Shoulder lengths from 3mm to 100mm.
Quality Assurance
Every shoulder screw undergoes dimensional inspection including shoulder diameter tolerance check and concentricity measurement. Our ISO 10012 certified measurement management system ensures accurate inspection data on every production run.
Custom And OEM Services
We accept custom orders for special shoulder diameters lengths and materials. Bulk pricing available for wholesale orders. Factory direct shipping worldwide.

Product Detail
Section 1: General Screw Type: Metric Shoulder Screw
Head Style: Hex Socket Head
Drive Type: Hex Key
Head Style: Hex Socket Head
Drive Type: Hex Key
Section 2: Material Screw Material: Stainless Steel 304 / Alloy Steel
Surface Finish: Plain / Zinc Plated / Black Oxide
Hardness: Class 12.9 for Alloy Steel
Surface Finish: Plain / Zinc Plated / Black Oxide
Hardness: Class 12.9 for Alloy Steel
Section 3: Dimensions Thread Size: M3 M4 M5 M6 M8
Shoulder Diameter: 3mm to 20mm
Shoulder Length: 3mm to 100mm
Shoulder Diameter: 3mm to 20mm
Shoulder Length: 3mm to 100mm
Section 4: Performance Surface Finish Tolerance: Precision Ground
Concentricity: High Precision
Corrosion Resistance: Excellent
Concentricity: High Precision
Corrosion Resistance: Excellent
Section 5: Applications Typical Use: Jigs Fixtures Molds Bearings
Industry: Industrial Automation Medical Automotive
Industry: Industrial Automation Medical Automotive

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We offer high-quality fasteners with custom solutions and competitive prices. Our team will reply to you within 24 hours.



