C. Sherman Johnson 27-316 Open Body Hand Crimp Lifeline Turnbuckle for 3/16" Wire

The C. Sherman Johnson 27-316 is a classic open body lifeline turnbuckle engineered specifically for sailboat lifeline applications. Combining a forged silicon bronze body with T-316 stainless steel ends, this turnbuckle delivers an ideal balance of corrosion resistance, strength, and long-term reliability in demanding marine environments.

The dissimilar metal construction is a key engineering advantage: the bronze turnbuckle body prevents galling against the stainless steel studs and threaded terminal — a common problem when stainless contacts stainless under load. The T-316 stainless steel toggle jaw provides a wide range of articulation to improve lifeline alignment and reduce stress at the terminal point.

The hand crimp threaded terminal end is designed for straightforward installation using a proper hand crimping tool, making this fitting suitable for DIY rigging by boat owners as well as professional riggers. A unique slotted locking design with wrap-around rings fits through holes in the studs for positive, secure locking without the need for additional lock nuts.

Key Features:

• Classic open body turnbuckle design for lifeline use
• Forged silicon bronze body resists galling against stainless steel studs
• T-316 stainless steel toggle jaw and threaded terminal studs for superior marine corrosion resistance
• Toggle jaw allows increased range of motion and improved lifeline alignment
• Positive locking via slotted body with wrap-around rings through stud holes
• Hand crimp terminal end — compatible with standard hand crimping tools
• Includes clevis pins and cotter rings

Specifications:

• Wire Size: 3/16"
• Pin Size: 1/4"
• Adjustment Range: 2-3/4" – 3"
• Body Material: Forged silicon bronze
• End Material: T-316 stainless steel
• Made in USA

Important Note: Hand crimp fittings, when properly installed, provide approximately 65–70% of the breaking strength of 7×7 stainless steel wire. These fittings are suitable for lifeline applications only and should not be used for standing rigging or other high-load purposes. Always follow the manufacturer's crimping tool instructions for a safe installation.