S-91273A288 1"-8 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 corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
- Precise component alignment ensured by the 1" diameter shoulder with tight diameter and length tolerances
- High mechanical strength with 70,000 psi tensile and 35,000 psi shear strength for demanding applications
- Secure and non-slip installation provided by the knurled head and 1/2" hex drive for high-torque fastening
- Reliable thread engagement with Class 2A fit 1"-8 UNC coarse threads for quick assembly and vibration resistance
- Consistent performance backed by Rockwell B55 hardness for excellent wear resistance and durability
- Global compliance assurance meeting RoHS 3 and REACH regulations for safe use in regulated industries
Professional Applications & Engineering Value
This 18-8 stainless steel shoulder screw is engineered to solve critical alignment and mounting challenges in industrial machinery. The precisely machined 1" shoulder diameter acts as a pivot or axle, ensuring components like gears, pulleys, and linkages maintain perfect concentricity, eliminating misalignment issues that cause premature wear. The 1"-8 UNC coarse thread with Class 2A fit provides robust holding power and resists loosening under vibration, making it ideal for assembly lines, automotive jigs, and conveyor systems. Manufactured from corrosion-resistant 18-8 Stainless Steel and featuring a knurled head with a 1/2" hex drive, it delivers reliable performance in demanding environments where precision, strength, and durability are non-negotiable.
Specification Summary & Compliance
This shoulder screw conforms to UNC thread standards with a Class 2A thread fit for consistent, interchangeable assembly. The shoulder features a diameter of 1" with a tolerance of -0.004" to -0.002" and a length of 1" with a tolerance of -0.005" to 0.005" for high precision. The product is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring it is free of restricted hazardous substances for global industrial use.
