Stinger SPT528 8 Gauge 5/16" Hole Pro Ring Terminal

Stinger SPT528 PRO Series 8 Gauge Set Screw Ring Terminal Chrome Finish with 5/16 Inch Ring Deep Wire Recesses and Polarity Bands

The SPT528 from Stinger is a PRO series 8 gauge set screw ring terminal in chrome finish, supplied as a single unit with red and black polarity bands included. The set screw connection uses an oversized set screw and deep wire recesses to secure 8 gauge wire without a crimp tool. The 5/16 inch ring suits the standard stud size used on battery terminals, distribution blocks, and amplifier power connections.

Product overview

The SPT528 uses a set screw connection rather than a crimp, securing the wire mechanically via an oversized set screw tightened against the conductor inside the deep wire recess. This provides a solid, repeatable connection that can be released and re-tightened if the installation changes, without requiring a crimp tool. The deep wire recesses ensure no exposed wire protrudes beyond the terminal body for a clean, professional installation result.

The included red and black polarity bands allow the same chrome terminal to be identified as either positive or negative by slipping the corresponding band over the terminal body, maintaining clear polarity identification without requiring a separate red or black terminal for each polarity. The SPT528 is the 8 gauge counterpart to the SPT520 (1/0 gauge) and SPT524 (4 gauge) set screw ring terminals in the Stinger PRO series range. Supplied as a single unit per pack.

Features and benefits

Set screw connection, no crimp tool required: The oversized set screw clamps the wire mechanically inside the terminal body, providing a solid and repeatable connection without requiring a crimp tool for 8 gauge cable.

Oversized set screw and deep wire recesses: The oversized set screw maximises clamping force against the conductor, and the deep wire recesses ensure no exposed wire protrudes beyond the terminal body for a clean, professional installation result.

Chrome finish: The chrome finish provides a premium appearance consistent with the Stinger PRO series range, suited to high-end visible installations in custom car audio builds.

Red and black polarity bands included: The included polarity bands allow the chrome terminal to be identified as either positive or negative by colour, maintaining standard polarity identification without requiring separate red or black terminal units.

5/16 inch ring for standard stud connections: The 5/16 inch inner ring diameter suits the standard stud size on battery terminals, distribution blocks, and amplifier power connections.

8 gauge compatibility: Designed for 8 gauge power wire, suited to entry to mid-powered car audio amplifier installations and 8 gauge wiring kits.

Technical specs

Frequently asked questions

What is the advantage of a set screw terminal over a crimp terminal for 8 gauge wire?
The SPT528 set screw design clamps the wire mechanically using an oversized set screw tightened with an allen key, providing a solid and repeatable connection without requiring a crimp tool. The connection can also be released and re-tightened if the installation needs to be reconfigured.

What do the polarity bands do?
The included red and black polarity bands slip over the chrome terminal body to identify the terminal as either positive power or negative ground by colour. This allows a single chrome terminal to be used for both polarities while maintaining standard colour-coded polarity identification throughout the installation.

How does the SPT528 compare to the SPT520 and other set screw ring terminals in the PRO series?
All are PRO series set screw ring terminals with the same design, deep wire recesses, oversized set screws, polarity bands, and 5/16 inch ring. The SPT520 is 1/0 gauge for the highest-powered systems, and the SPT528 is 8 gauge for entry to mid-powered installations. Select the gauge that matches the power cable used in your specific installation.

What tool is required to tighten the set screw on the SPT528?
An allen key of the appropriate size for the oversized set screw is required to tighten the terminal onto the wire. No crimp tool is needed. Contact us if you need further guidance on installation for this terminal.

Is the SPT528 suitable for ground connections as well as power?
Yes. The included polarity bands allow the SPT528 to be used for either positive power or negative ground connections. Apply the red band for positive and the black band for ground to maintain standard polarity identification throughout the installation.