Technical specifications
| Wire Size (Metric) | Wire Size (Imperial) | Thread (UNF) | Fully Open (MM) | Fully Closed (MM) | Fully Open (INCH) | Fully Closed (INCH) | Fork Width (MM) | Fork Width (INCH) | Fork Pin (MM) | Fork Pin (INCH) |
|---|---|---|---|---|---|---|---|---|---|---|
| 3 MM | 1/8" | 1/4" | 221 | 145 | 8.701 | 5.709 | 6.4 | 0.252 | 6.2 | 1/4" |
| 4 MM | 5/32" | 1/4" | 228 | 152 | 8.976 | 5.984 | 6.4 | 0.252 | 6.2 | 1/4" |
| 4 MM | 5/32" | 5/16" | 251 | 168 | 9.882 | 6.614 | 7.9 | 0.311 | 7.7 | 5/16" |
| 5 MM | 3/16" | 5/16" | 251 | 168 | 9.882 | 6.614 | 7.9 | 0.311 | 7.7 | 5/16" |
| 5 MM | - | 3/8" | 278 | 186 | 10.945 | 7.323 | 9.5 | 0.374 | 9.3 | 3/8" |
| 6 MM | - | 3/8" | 279 | 187 | 10.984 | 7.362 | 9.5 | 0.374 | 9.3 | 3/8" |
| 6 MM | - | 7/16" | 308 | 208 | 12.126 | 8.189 | 11.1 | 0.437 | 10.9 | 7/16" |
| 7 MM | 9/32" | 7/16" | 311 | 211 | 12.244 | 8.307 | 11.1 | 0.437 | 10.9 | 7/16" |
| 7 MM | 9/32" | 1/2" | 338 | 234 | 13.307 | 9.213 | 12.7 | 0.5 | 12.6 | 1/2" |
| 8 MM | 5/16" | 1/2" | 335 | 235 | 13.346 | 9.252 | 12.7 | 0.5 | 12.6 | 1/2" |
| 8 MM | 5/16" | 5/8" | 401 | 277 | 15.787 | 10.906 | 15.9 | 0.625 | 15.6 | 5/8" |
| 10 MM | - | 5/8" | 407 | 283 | 16.024 | 11.142 | 15.9 | 0.625 | 15.6 | 5/8" |
| 12 MM | - | 3/4" | 522 | 358 | 20.551 | 14.094 | 19.1 | 0.752 | 18.5 | 3/4" |
Description
Bronze Fork & Swage represents premium rigging hardware engineering, combining the proven Sta-Lok Forged Turnbuckle design with dual termination options for professional rigging applications requiring both mechanical and swaged connections. This sophisticated assembly features a fully machined Threaded Fork End (B16) at one termination and a precision Swage Stud (051) at the other, providing the ideal solution for installations demanding permanent wire rope termination combined with adjustable mechanical attachment.
Available across comprehensive wire sizes from 3mm to 12mm (metric) and 1/8" to 1/2" (imperial) with corresponding UNF thread specifications, this turnbuckle accommodates diverse professional rigging requirements. The fully open dimensions range from 221mm to 522mm with closed dimensions from 145mm to 358mm, ensuring optimal adjustment capabilities for demanding sailing applications across various vessel sizes.
The advanced Sta-Lok Forged Turnbuckle design exceeds the breaking load of today's high-strength compacted strand wire ropes through superior forging and machining processes utilising high-strength bronze alloy construction. The aerodynamic design philosophy creates one of the strongest and most elegant bronze turnbuckles available on the world market today, optimising strength-to-weight ratios whilst reducing wind resistance for performance sailing applications.
The precision Swage Stud termination provides permanent, high-strength wire rope attachment through professional swaging processes, whilst the machined fork end enables secure mechanical connection to chainplates, tangs, and rigging hardware. The high-quality polished chromium finish ensures superior corrosion protection and maintains lustrous appearance throughout extended marine exposure, making this the preferred choice for professional rigging installations requiring permanent wire termination combined with adjustment capability.
