S-98704A115 4-40 x 17/32" Thumb Screws
Thumb 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 grip and tool-free operation with knurled black acetal plastic head for easy hand tightening in tight spaces
- Excellent corrosion resistance from 18-8 stainless steel construction, ideal for humid or demanding environments
- Precise thread engagement with Class 3A thread fit ensuring reliable fastening and vibration resistance
- Versatile installation options featuring both thumb operation and 3/32" hex drive compatibility
- Wide temperature tolerance with acetal plastic head performing reliably from 32° to 180° F
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial use
- Full threading coverage providing consistent clamping force along the entire 17/32" length
Professional Applications & Engineering Value
These 4-40 UNC thumb screws deliver exceptional value in applications requiring frequent adjustments or tool-free maintenance. The 18-8 stainless steel body provides reliable corrosion resistance while the black acetal plastic head offers electrical insulation and chemical resistance. The coarse UNC threading with Class 3A fit ensures quick assembly and disassembly without cross-threading risks, making them ideal for electronic enclosures, industrial controls, and laboratory equipment. The knurled surface combined with low-profile round head design enables secure grip even with gloved hands, while the hex drive compatibility allows for torque-intensive applications where hand tightening isn't sufficient.
Specification Summary & Compliance
Manufactured to precise Class 3A thread fit standards with 4-40 UNC coarse threads and right-hand threading direction. Features include 5/16" head diameter, 17/32" fully threaded length, and 3/32" hex drive compatibility. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for hazardous substance restrictions. The acetal plastic head maintains integrity across 32° to 180° F operating range, while the stainless steel construction ensures long-term durability in industrial environments.
