S-94128A171 5/16"-18 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
- Superior Thread Precision with Class 3A fit ensures reliable, vibration-resistant connections in high-stress assemblies.
- Exceptional Durability from alloy steel construction and Rockwell C32 hardness provides long-lasting performance in harsh industrial environments.
- Accurate Component Alignment thanks to the precisely machined shoulder with tight diameter and length tolerances for reduced wear and smooth operation.
- Easy Installation and Adjustment with a slotted drive design, allowing straightforward manual assembly and maintenance.
- Wide Compatibility with 5/16"-18 UNC coarse threads, facilitating quick integration into standard industrial equipment and machinery.
- Headless Design Advantage enables flush mounting in confined spaces, ideal for compact mechanical systems.
- Environmental and Regulatory Safety through full RoHS 3 and REACH compliance, ensuring safe use in global markets.
Professional Applications & Engineering Value
This alloy steel shoulder screw is engineered to address critical challenges in precision machinery, such as misalignment and component slippage. The Class 3A thread fit and right-hand UNC coarse threads deliver secure fastening under dynamic loads, while the headless slotted drive allows for easy access in tight assemblies. With a Rockwell C32 hardness and precise shoulder dimensions, it minimizes wear in rotating parts like bearings, pulleys, and linkages. Ideal for industrial automation, automotive systems, and heavy equipment, this screw ensures consistent performance, reduces maintenance downtime, and enhances overall system reliability.
Specification Summary & Compliance
This shoulder screw features a 5/16"-18 UNC coarse thread with Class 3A fit for high precision, along with a shoulder diameter of 3/8" (tolerance: -0.001" to 0") and shoulder length of 5/8" (tolerance: 0" to 0.005"). Manufactured from alloy steel and hardened to Rockwell C32, it adheres to strict dimensional standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial applications.
