S-90033A118 Length 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide Steel coating, extending service life in demanding industrial environments.
• Effortless installation and secure fastening through thread forming technology, which creates strong, vibration-resistant threads in sheet metal without pre-tapping.
• Clean, flush finish with a standard 82° flat head that sits neatly countersunk in materials, ideal for applications where a smooth surface is critical.
• Reliable drive engagement provided by the Phillips No. 1 drive, reducing cam-out and ensuring efficient torque transfer during installation.
• Optimized for sheet metal with a pointed tip and fully threaded design, enabling quick starts and maximum thread engagement for superior pull-out strength.
• Precision compatibility with a No. 44 drill bit (0.086" diameter), ensuring accurate pilot holes and reducing the risk of material damage or screw failure.
• Compliance with global environmental standards, including RoHS 3 and REACH, ensuring safe use in regulated industries and international supply chains.

Professional Applications & Engineering Value

These No. 4-24 x 3/4" Black-Oxide Steel tapping screws are engineered specifically for sheet metal applications, where traditional fasteners may strip threads or loosen under vibration. The thread forming (A/AB type) design displaces material to create strong, permanent internal threads, eliminating the need for separate tapping operations and reducing assembly time. The fully threaded body and pointed tip ensure quick penetration and maximum holding power in thin-gauge metals up to 0.025" thick. With a Phillips flat head and standard 82° countersink, these screws provide a secure, flush fit that minimizes protrusion in HVAC, electronics enclosures, and automotive panels. The Black-Oxide finish adds a layer of corrosion resistance, making these self-tapping screws a reliable choice for both indoor and mildly corrosive environments.

Specification Summary & Compliance

This screw features a No. 4-24 thread with a right-hand direction and is fully threaded for consistent engagement. It adheres to standard inch measurements, with a length of 3/4" and a head diameter of 0.212". The thread forming tapping method complies with typical industrial standards for sheet metal fastening. This product is confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for hazardous substances.