S-97345A208 1/4"-20 ASME B18.3 Shoulder Screws
Shoulder Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional corrosion resistance with 316 stainless steel construction, ideal for harsh industrial and marine environments
- Precise component alignment ensured by the 1-3/8" shoulder with tight diameter and length tolerances
- High load-bearing capacity with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
- Secure, vibration-resistant assembly provided by Class 3A thread fit and coarse UNC threading
- Easy installation and removal with hex socket drive and knurled head for improved grip
- Long-term reliability backed by Rockwell B79 hardness for wear resistance
- Regulatory compliance meeting ASME B18.3 standards and RoHS 3/REACH environmental directives
Professional Applications & Engineering Value
This 316 stainless steel shoulder screw delivers critical performance in precision machinery, automation systems, and rotating assemblies where exact alignment and corrosion resistance are paramount. The 1/4"-20 UNC coarse thread with Class 3A fit ensures secure fastening in high-vibration environments, while the precisely machined shoulder maintains component positioning under load. The hex socket drive combined with knurled head texture provides superior torque transmission and handling in confined spaces. Engineered to ASME B18.3 specifications, these shoulder screws solve alignment challenges in industrial equipment, manufacturing jigs, and material handling systems where dimensional stability and chemical resistance are essential.
Specification Summary & Compliance
Manufactured to ASME B18.3 standards with Class 3A thread fit for superior precision. Features include: 1/4"-20 UNC coarse thread, 1-3/8" shoulder length (±0.005" tolerance), and 5/16" shoulder diameter (-0.004" to -0.002" tolerance). Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Material certification and mechanical properties (70,000 psi tensile, 35,000 psi shear) meet industrial fastener requirements for critical applications.
