S-90275A542 1/4"-20 x 1" ASME B18.6.3 Steel Slotted Flat Head Screws
Steel Slotted Flat Head 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
- Corrosion-resistant zinc-plated steel construction extends service life in demanding industrial environments
- High 60,000 psi tensile strength provides reliable load-bearing capacity for critical assemblies
- Rockwell B70 hardness rating ensures superior resistance to wear and deformation
- Fully threaded UNC coarse spacing design delivers maximum grip and faster installation in various materials
- Precision Class 2A thread fit guarantees consistent engagement and vibration resistance
- Standard 82° countersink angle enables flush mounting for streamlined surfaces and safety
- Slotted drive compatibility offers straightforward installation with common hand tools
Professional Applications & Engineering Value
Engineered for industrial reliability, these zinc-plated steel flat head screws solve critical fastening challenges where surface flushness and corrosion resistance are paramount. The combination of 60,000 psi tensile strength and Rockwell B70 hardness prevents thread stripping and head deformation under dynamic loads, making them ideal for machinery, equipment panels, and structural assemblies. The fully threaded UNC coarse spacing provides superior pull-out resistance in wood, plastic, and soft metals, while the slotted drive ensures compatibility across maintenance environments. These flat head machine screws deliver consistent performance in automotive, manufacturing, and electrical enclosures where vibration resistance and regulatory compliance are essential.
Specification Summary & Compliance
This 1/4"-20 x 1" flat head screw maintains precision Class 2A thread fit per UNC standards with coarse thread spacing for optimal engagement. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. The product is verified RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting international environmental and safety regulations for industrial components.
