Sta-Lok Dyform & Compacted Wedges


  • Compacted strand and Dyform wire ropes provide higher breaking loads and lower stretch than conventional 1 x 19 wire
  • There are 5 different constructions (1×7), (1×19), (1×25), (1×31) and (1×36)
  • Sta-Lok Swageless Self Fit terminals will terminate each of these constructions using different wedges (see table below)
  • Some sizes sold in packs, see below


Over 48 years since its inception, Sta-Lok self-fit terminals are used around the world and have gained worldwide recognition for high quality and reliability.

For use with the right hand and left hand lay 1×19, 7×19, 7×7 and compacted strand stainless steel wire rope from 3mm – 26mm (1/8” – 1”).

The Sta-Lok self-fit terminal will work under constant loading and variable shock loading. The termination is stronger than the rated breaking load of the wire rope. In all situations, the Sta-Lok terminal has proven to be totally reliable and re-usable*.

*Just a new wedge is required

  • Assemble on-site, easy to install with simple hand tools
  • No pre-measurement required
  • A different wedge is required for 1×19, 7 strands and compacted strand wire rope
  • All our wedges are laser marked for easy identification and selection
  • Guaranteed stronger than wire rope

These cones are specifically designed for use with Compacted Strand wire, but only certain diameters of Dyform wire.

Do not use on standard 1×19, 7×7, 7×19

Dyform branded wire is a legacy brand that is no longer available. Modern wire of similar construction is called Compact strand.

4mm, 5mm, 8mm and 10mm wedges are suitable for both Dyform and Compact Strand. If you are ordering for 6mm and 7mm wire please check the chart below to see which parts you require.

Sta-Lok Wire Connector Terminals – Technical Information – How to assemble

Sta-Lok Terminal Instruction 1

1. Cut wire rope and slide socket component over wire.

Wind tape around wire approx 12″ (300mm) from end. This will prevent the socket from sliding down the wire.

TIP: If using a hacksaw to cut your wire rope, wind tape around wire to ensure a neat cut.

Sta-Lok Terminal Instruction 2

2. Unravel outer strands 2″ to 3″ (50-76mm) to expose central core.

TIP: Use a screwdriver to prise initial strands out of position.

Sta-Lok Terminal Instruction 3

3. Slide wedge component over central core of wire rope.

Sta-Lok Terminal Instruction 4

4. Reposition outer strands.

Turn outer strands either clockwise or anti-clockwise, depending on the lay of the wire, around the wedge. Ensure approx 1/8″ (2-3mm) of the central core protrudes from the end of the wedge.

Outer strands should be evenly situated around the wedge. Care should be taken to ensure that a strand does not slip into the slit of the wedge.

TIP: Push the socket towards end of wire, while repositioning the outer strands, this will help control. When wire strands are in position, push socket firmly, as indicated to hold wires in position.

Sta-Lok Terminal Instruction 5

5. Final assembly.

Ensure former component sits in bottom of end fitting. Screw socket assembly into end fitting and tighten with spanners. The assembly is now complete.

TIP: Undue force is not required to terminate the wire.

Fitting instructions are supplied with each Terminal.

Additional information


3mm Compacted, 4mm Compacted & Dyform, 5mm Compacted & Dyform, 6mm Dyform, 6mm Compacted, 7mm Dyform, 7mm Compacted, 8mm Compacted & Dyform, 10mm Compacted & Dyform, 12mm Dyform, 12mm Compacted, 14mm Compacted, 14mm 1×25 Compacted & Dyform