S-92981A774 M2 ASTM A108 Shoulder Screws
Shoulder Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Enhanced Durability & Corrosion Resistance – Black oxide finish provides superior protection against rust and wear in harsh industrial environments.
- High Tensile Strength for Demanding Applications – Alloy steel construction with 140,000 psi tensile strength ensures reliable performance under high stress.
- Precision Shoulder for Accurate Alignment – 20mm shoulder length with tight tolerance (±0.25mm) guarantees exact positioning and reduces assembly errors.
- Secure & Non-Slip Fastening – Knurled head texture combined with a 1.5mm hex drive offers improved grip and prevents tool slippage during installation.
- Consistent Thread Performance – Class 5g6g thread fit and coarse M2x0.4 thread design ensure smooth engagement and vibration resistance.
- Broad Compliance for Global Use – Meets ASTM A108, RoHS 3, and REACH standards, making it suitable for regulated and international markets.
- Rockwell C32 Hardness for Longevity – Maintains structural integrity and resists deformation over repeated use cycles.
Professional Applications & Engineering Value
This M2 shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The alloy steel material, combined with a black oxide finish, offers exceptional resistance to corrosion and mechanical stress, making it ideal for automotive, electronics, and machinery sectors. The 20mm shoulder with controlled tolerances provides a stable bearing surface, minimizing part movement and wear. Its coarse metric thread and Class 5g6g fit ensure quick, secure fastening even in high-vibration environments. The knurled socket head enhances tool engagement, reducing installation time and improving safety in tight spaces.
Specification Summary & Compliance
This shoulder screw adheres to precise dimensional standards, including a Class 5g6g thread fit and shoulder diameter tolerance of -0.072 to -0.01 mm. It is manufactured in compliance with ASTM A108 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safety and reliability for industrial use.
