Robertson Insert Bit S4, 1/4″ Hex, 1-15/16″ – Eclipse S4X1-15/16

Eclipse S4X1-15/16 — Robertson Insert Bit S4, 1/4″ Hex, 1-15/16″

This S4X1-15/16 Robertson insert bit is designed to drive square-recess (Robertson) screws with dependable, repeatable engagement. The S4 tip size (4mm) seats positively in compatible screw heads to help maintain control through the full torque range. A 1/4″ hex shank interfaces with standard bit holders and quick-change chucks used in cordless drivers and hand tools. The 1-15/16″ overall length offers a practical balance of reach and stability for panel work, cabinetry, electrical enclosures, and general assembly. Consistent fit reduces wobble and helps maintain screw head integrity over repeated cycles. For technicians and production teams, this bit supports efficient fastening with minimal rework. Available for local pickup at our Mesa, Arizona counter serving Phoenix, Chandler, Tempe, Gilbert, Scottsdale, and Glendale, and ready to ship nationwide.

Whether you are outfitting a service kit or stocking a bench, this insert bit provides a straightforward solution for Robertson fasteners in field service, OEM lines, and MRO programs. Keep several on hand to minimize downtime and maintain consistent results across crews and sites.

Key Features:

• Robertson (square) S4 tip for positive screw engagement
• 1/4″ hex drive shank for standard bit holders and quick-change drivers
• 1-15/16″ overall length for controlled access in panels and enclosures
• Supports repeatable torque transfer for assembly and field service

Specifications:

• Manufacturer: Eclipse
• MPN: S4X1-15/16
• UPC: 0617293019918

Typical Applications: Field installers and low-voltage technicians mounting devices and junction boxes; OEM assembly lines building fixtures or cabinetry with square-drive hardware; MRO teams performing repairs and preventive maintenance where Robertson screws are specified.

Installation / Use Example: An AV installer in Scottsdale preps a rack cabinet, loading a 1/4″ hex quick-change holder with this S4 bit to secure equipment rails and cable management panels that use Robertson screws, achieving consistent seating without cam-out.

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