S-91700A253 4-40 x 5/16" ASME B18.6.3 Brass Slotted Oval Head Screws
Brass Slotted Oval 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
- Superior corrosion resistance with brass construction, ideal for harsh industrial environments and electrical applications
- Enhanced holding power from fully threaded design and coarse UNC threading for faster assembly and reliable fastening
- Precise flush mounting with standard oval head profile and 82° countersink angle for seamless surface integration
- Consistent performance ensured by Class 2A thread fit, maintaining dimensional accuracy across high-volume applications
- Exceptional mechanical strength with 50,000 psi tensile strength and Rockwell B50 hardness for heavy-duty use
- Broad regulatory compliance meeting ASME B18.6.3 specifications, RoHS 3, and REACH for global industrial acceptance
- Easy manual installation through slotted drive design, compatible with standard screwdrivers for maintenance flexibility
Professional Applications & Engineering Value
These 4-40 UNC brass oval head slotted screws deliver critical corrosion resistance and electrical conductivity where steel fasteners would fail. The fully threaded coarse UNC design provides rapid installation in soft materials and plastics, while the standard oval head with 82° countersink creates clean, flush finishes in precision assemblies. Engineered with 50,000 psi tensile strength, they maintain integrity in vibrating environments common in electrical enclosures, instrumentation, and marine hardware. The Rockwell B50 hardness balances machinability with durability, making these brass machine screws ideal for applications requiring both non-magnetic properties and reliable fastening performance.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications with Class 2A thread fit for consistent dimensional accuracy. Features 4-40 UNC coarse threading with right-hand direction and fully threaded 5/16" length. Compliant with RoHS 3 (2015/863/EU) under exemption 6(a)-I and REACH (EC 1907/2006) regulations, ensuring environmental and safety standards for industrial distribution.
