S-91400A127 4-40 x 1 3/8" FF-S-92, QQ-P-35, MS51957-122 Stainless Steel Pan Head Phillips Screws
Stainless Steel Pan Head Phillips 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
- Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments
- Exceptional tensile strength rated at 80,000 psi for reliable performance in demanding applications
- Optimized drive engagement with Phillips No. 1 drive for secure installation and reduced cam-out risk
- Precise thread compatibility with Class 2A UNC coarse threads ensuring consistent fit and vibration resistance
- Complete thread coverage with fully threaded design for maximum grip length and load distribution
- Regulatory compliance meeting RoHS 3 and REACH standards for global market acceptance
- Standardized dimensions conforming to Fed. Spec. FF-S-92 and MS51957-122 for interchangeability
Professional Applications & Engineering Value
This 4-40 UNC rounded pan head Phillips screw delivers critical performance advantages in industrial assembly applications where corrosion resistance and mechanical reliability are paramount. The passivated 18-8 stainless steel construction provides excellent protection against oxidation and chemical exposure, making it suitable for electronics enclosures, machinery components, and outdoor equipment. The coarse UNC thread profile ensures rapid installation and superior holding power in various materials, while the Class 2A thread fit maintains consistent engagement without binding. The rounded pan head design distributes clamping force evenly, preventing surface damage during tightening operations. These fully threaded screws are engineered to maintain integrity under dynamic loads and vibration, offering dependable fastening solutions for maintenance, manufacturing, and equipment repair applications.
Specification Summary & Compliance
This fastener features precision 4-40 UNC coarse threads with Class 2A thread fit tolerance for consistent engagement. Manufacturing complies with Fed. Spec. FF-S-92, QQ-P-35, and MS51957-122 standards ensuring dimensional accuracy and performance reliability. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting current environmental regulations for hazardous substance restrictions.
