S-92012A309 1/4"-20 Shoulder Screws

Shoulder Screws

0578FA00020 Shoulder Screws
0578FA00020 Shoulder Screws

Image may differ from product. See technical specification for details.

Part No.
Part No. 0578FA00020
Equivalent to mcmaster :
92012A309

Basic Information

System of Measurement Inch

Head Parameters

Head Type Socket
Head Diameter 1/2"
Head Height 7/32"
Head Texture Smooth
Socket Head Profile Standard

Dimensions

Shoulder Diameter 3/8"
Shoulder Diameter Tolerance -0.001" to 0"
Shoulder Fit Precise
Shoulder Length 1/2"
Shoulder Length Tolerance 0" to 0.002"

Thread Parameters

Thread Type UNC
Thread Size 1/4"-20
Thread Diameter 0.25"
Thread Spacing Coarse
Thread Length 7/16"
Thread Direction Right Hand
Thread Fit Class 2A

Tip & Drive Parameters

Drive Style Hex
Drive Size 5/32"

Material & Strength

Material Alloy Steel
Finish Black Oxide
Hardness Rockwell C32
Tensile Strength 140000 psi

Temperature & Environment

REACH Compliant
RoHS Compliant
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
Price available upon request. Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
  • Fast delivery
  • Enjoy discounts on bulk purchases
  • Secure Payment
  • Fast Global Shipping

Key Features & Benefits at a Glance

  • Enhanced Durability: Alloy steel construction with Rockwell C32 hardness provides superior resistance to wear and deformation in demanding applications.
  • Exceptional Tensile Strength: 140,000 psi tensile strength ensures reliable performance under high-stress conditions, reducing failure risks.
  • Precision Shoulder Fit: 3/8" shoulder diameter with precise tolerances enables accurate alignment and smooth rotation in assemblies.
  • Corrosion Resistance: Black oxide finish offers protection against rust and oxidation, extending service life in harsh environments.
  • Secure Fastening: Class 2A UNC coarse threads with 1/4"-20 size ensure easy installation and strong, vibration-resistant connections.
  • Efficient Installation: Socket head with 5/32" hex drive allows for quick, tool-accessible tightening in confined spaces.
  • Regulatory Compliance: Meets RoHS 3 and REACH standards, ensuring safe and environmentally responsible use in industrial settings.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to address common industrial challenges such as misalignment and component wear. The alloy steel material, combined with a black oxide finish, provides excellent durability and corrosion resistance, making it ideal for machinery, automotive, and automation systems. The UNC coarse thread and Class 2A fit facilitate quick assembly while maintaining tight tolerances, reducing downtime. The smooth shoulder with precise dimensions ensures accurate pivoting and bearing functions, enhancing overall mechanical performance in industrial applications where reliability is critical.

Specification Summary & Compliance

This shoulder screw features a Class 2A thread fit with UNC coarse threading (1/4"-20) and precise shoulder dimensions (3/8" diameter, 1/2" length) manufactured to tight tolerances. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and adherence to international standards for industrial components.

🔍
Cancel