S-90550A660 10-32 x 1 1/4" ASME B18.3, ASTM F879, MIL-DTL-18240 Venting Stainless Steel Hex-Drive Flat Head Screws
Venting Stainless Steel Hex-Drive Flat Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments.
- High-strength, precision threading with Class 3A UNF fine threads ensures reliable, vibration-resistant connections.
- Secure, high-torque installation enabled by the 1/8" hex drive, preventing cam-out and tool slippage.
- Optimal flush mounting with the standard 82° flat head profile, providing a smooth, finished surface.
- Enhanced pressure equalization via the vented screw feature (0.046" vent diameter), reducing the risk of pressure buildup.
- Full-length thread engagement across the 1-1/4" length for maximum holding power and load distribution.
- Guaranteed dimensional consistency and interchangeability through compliance with ASME B18.3 specifications.
Professional Applications & Engineering Value
This 10-32 UNF Flat Head Screw is engineered to address critical challenges in precision assembly and high-vibration environments. The 18-8 Stainless Steel material provides excellent resistance to oxidation and chemical exposure, making it suitable for industrial machinery, electronic enclosures, and marine applications. The Class 3A thread fit and fine thread spacing deliver superior clamping force and prevent loosening under dynamic loads. The hex drive design allows for high-torque installation in confined spaces, while the vented feature is essential in pressurized systems to prevent vacuum lock or moisture entrapment. Its compliance with ASME B18.3 ensures reliable performance in demanding engineering contexts, offering long-term durability and reduced maintenance needs.
Specification Summary & Compliance
This screw features a 10-32 UNF thread with a Class 3A fit for high precision and a fine thread spacing. It is manufactured to meet ASME B18.3, ASTM F879, and MIL-DTL-18240 standards, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its safety for use in regulated industries.
