3S
Federal Spec FF-T-791B Type 1 Form 1; Forged, Hot Dip Galvanized, Open Body, Working Load Limit: 1200 lbs. Ultimate Strength: 6000 lbs. The Turnbuckle eye is elongated to reduce stress on eye and make it easier for Thimbles and other hardware to pass through.
Typical Use: For attaching and tensioning ROHN Tower Down Guy Terminations when utilizing 3/16" Strand (via 3/16" Pre-formed Dead-End with 5/16" Thimble or 3/16" Cable Clamps with 3/16THH Thimble), 1/4" Strand (via 1/4" Pre-formed Dead-End with 5/16" Thimble and 1/4" Cable Clamps with 1/4THH Thimble), or 618/620 Bare Wire (via Cable Clamps or Gripple with 1/4THH Thimble) through One Eye, with the Other Eye bolted through while "Sandwiched" between Dual Equalizer Plate Anchor Assemblies such as the GAC305, EP25345 or GAC303, EP25343.
Consult ROHN Catalog Links at Footer Section below for ROHN 25G 45G 55G 65G Tower Guy wire Details for Various Wind Loads.
Compare to ROHN R-3/8TBE&E 3/8 inch Eye to Eye Turnbuckle and Channel Master Turnbuckle Part# 1369!
We Feature Drop Forged, Hot Dipped Galvanized Open Body, Light to Heavy Duty Turnbuckles for Tensioning Tower and Mast Steel Strand and Wire Rope Down Guys to their Anchor Points. Turnbuckles of this Nature are typically rated in both Ultimate Tensile Strength (Breaking Point), and Working Load Limit (with Ultimate Strength being 5 times the WLL) conforming to Federal Spec FF-T-791B Type 1 Form 1
As Turnbuckles are paired with the HS or EHS Stranded Steel or Wire Rope Down Guy they tension; it is recommended that the WLL (Working Load Limit) of the Turnbuckle be paired with the anticipated tension requirements of the Down Guy Wire and or Ultimate Tensile Strength Appropriately, as to match Tension Limits. Further, Always use Heavy Duty, Hot Dip Galvanized Thimble appropriately sized to the Strand or the Pre-formed Dead-End terminating the Down Guy to the Turnbuckle to assure the Tension is Transferred evenly without "Pinch Points".
The initial Tensioning of a guy should be 10% of the Ultimate Tensile Strength of the HS or EHS strand used to be within travel window of the Turnbuckle.
Measuring the tension of a Tower Down Guy can be by means of Mechanical analog device meters, Electronic devices with some utilizing Lasers or observation calculation. Many will use the "Vibration Method", where you observe the resonant Frequency in cycles per minute of wave travel across the known length and size of strand after striking it at it's current tension. Though it may seem less than "Scientific" in absence of a Measurement by a device; it has been, and continues to be used by and in printed circulation by Large Companies in the Trade.