Robertson S4 Insert Bit, 1″, 1/4″ Hex Drive – Eclipse S4X1

Eclipse S4X1 — Robertson S4 Insert Bit, 1″, 1/4″ Hex Drive

The Eclipse S4X1 is a 1″ insert bit with an S4 Robertson (square) tip engineered for positive, slip‑resistant engagement with square‑drive fasteners. Its 1/4″ hex shank interfaces cleanly with standard quick‑change bit holders, hand drivers, and hex chucks used across service and production environments. The square profile helps reduce cam‑out versus slotted or Phillips tips, protecting hardware and improving cycle time. At 1″ long, this insert format is easy to control and well suited for tight panels, junction boxes, and recessed hardware. Consistent tip geometry supports repeatable torque transfer for assembly lines, field service calls, and bench repair. Standardizing on a dedicated S4 bit simplifies fastener selection and reduces rework from damaged screws. Ideal for professional tool kits in Phoenix, Mesa, Chandler, Tempe, Gilbert, Scottsdale, and Glendale, it’s equally ready for nationwide projects that demand reliable drive performance.

Whether you’re building fixtures, servicing electrical enclosures, assembling OEM equipment, or managing MRO tasks, this bit integrates seamlessly with the 1/4″ hex ecosystem you already use. Keep one on hand as your go‑to S4 driver for efficient, repeatable installs and clean workmanship.

Key Features:

• Robertson (square) S4 tip profile for secure screw engagement
• 1″ insert length for controlled driving in confined spaces
• 1/4″ hex drive shank — fits standard quick‑change holders and hex chucks

Specifications:

• Manufacturer: Eclipse
• MPN: S4X1
• UPC: 0617293019901

Typical Applications:

• Field installers and low‑voltage technicians driving square‑recess fasteners
• OEM assembly lines and fixture builds requiring repeatable torque transfer
• MRO teams performing equipment maintenance and repair
• Electronics hobbyists and bench technicians working with panel hardware

Installation / Use Example:

• During a security camera install, a technician uses the S4X1 in a magnetic bit holder to anchor a junction box lid with S4 screws, achieving fast, slip‑free seating without damaging the finish.

Tri‑Tek Electronics is an authorized distributor of this product with full manufacturer warranty support and nationwide availability.