C. Sherman Johnson 1/4-28 T-Style Jaw/Jaw Turnbuckle

The C. Sherman Johnson 1/4-28 T-Style Jaw/Jaw Turnbuckle gives sailors a traditional open-body adjustment system with an integral toggle jaw. The toggle arrangement lets the terminal articulate with the rig rather than requiring a separate toggle fitting. Its 5/32 in wire compatibility and machine-swage configuration make it suitable for standing-rigging work where a compact adjustable connection is needed. The open body also leaves the threaded adjustment easy to inspect during setup and routine rig checks.

The body uses forged silicon bronze while the ends are 316 stainless, a combination chosen to reduce galling between the threaded components. The 1/4-28 thread provides the adjustment interface, and the assembly measures 8 in pin-to-pin when closed and 11 in when fully opened. Its body is 4-3/4 in long, and the jaw uses a 1/4 in pin. The manufacturer lists a 2,500 lb breaking strength, giving installers an additional reference when matching the fitting to the rest of the rig.

• Integral T-style toggle jaw eliminates a separate toggle fitting
• Machine-swage terminal configuration for 5/32 in wire
• 8 in closed and 11 in open pin-to-pin adjustment range
• 4-3/4 in open body with 1/4 in jaw pin

This turnbuckle is best selected as part of a complete rigging system where wire diameter, terminal style, pin size, and available adjustment all match the existing installation. Because the open design makes the threads visible, it is also straightforward to inspect during seasonal rig maintenance. Browse more Sailing Hardware for compatible hardware and related marine rigging components.