S-90807A116 1/4"-20 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
- Exceptional tensile strength with 140,000 psi rating for reliable performance in high-stress applications
- Precision Class 3A thread fit ensures consistent engagement and vibration resistance in assembly operations
- Black oxide finish provides superior corrosion protection for extended service life in demanding environments
- Knurled socket head design offers improved grip and tool engagement during installation and maintenance
- 1" precision shoulder length maintains accurate component alignment with tight tolerance control
- Alloy steel construction with Rockwell C32 hardness delivers optimal durability and wear resistance
- 1/8" hex drive compatibility enables efficient installation with standard industrial tools
Professional Applications & Engineering Value
This alloy steel shoulder screw with black oxide finish addresses critical alignment and durability challenges in precision machinery. The 1" shoulder length with controlled tolerances ensures accurate component positioning in rotating assemblies, while the Class 3A UNC coarse thread provides secure fastening in high-vibration environments. The knurled socket head design prevents tool slippage during torque application, making it ideal for industrial automation equipment, precision fixtures, and machinery where repeated adjustments are necessary. The combination of 140,000 psi tensile strength and corrosion-resistant finish ensures long-term reliability in manufacturing applications requiring frequent disassembly and reassembly.
Specification Summary & Compliance
This precision shoulder screw features 1/4"-20 UNC coarse threads with Class 3A fit for superior thread engagement. The shoulder maintains tight dimensional control with diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005". Manufactured from alloy steel hardened to Rockwell C32, this fastener meets industrial standards for precision components. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.
