S-90401A829 10-32 x 1/2" Hex Head Screws with Lock Washer
Hex Head Screws with Lock Washer
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Washer & Nut
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc-plated steel construction for extended service life in harsh environments
- Reliable vibration resistance through integrated external-tooth lock washers that prevent loosening under dynamic loads
- Exceptional mechanical strength with 60,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
- Precise thread engagement with Class 2A UNF fine threads ensuring secure fastening and consistent torque performance
- Quick installation and removal using standard external hex drive for efficient assembly and maintenance operations
- Full-threaded design providing maximum grip length and uniform stress distribution across the entire fastener
- Regulatory compliance meeting RoHS 3 and REACH standards for environmentally responsible manufacturing
Professional Applications & Engineering Value
These 10-32 UNF hex head screws with external-tooth lock washers deliver critical vibration resistance in demanding industrial applications where machinery vibration and thermal cycling can compromise joint integrity. The zinc-plated steel construction provides essential corrosion protection while maintaining the 60,000 psi tensile strength required for structural fastening. The fully threaded design ensures maximum thread engagement in both thin and thick materials, while the Class 2A thread fit guarantees consistent installation torque and reliable clamping force. Ideal for assembly lines, heavy equipment, and precision machinery where vibration-resistant fastening and regulatory compliance are mandatory requirements.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit standards with UNF fine threads (10-32) and right-hand threading. Features include 1/2" length, external hex drive, and integrated external-tooth lock washers (0.381" OD, 0.024" thickness). Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.
