Currency: GBP

Subtotal £0.00
Shipping £0.00
VAT included in total (£0.00)
Total £0.00
Checkout
Menu

Guard Wire Stud Terminal Dimensions

Swage studs are an excellent versatile option for terminating guard wires, because they can accommodate a wide variety of end fittings:

The bonus is that all these end fittings can be removed (unthreaded), for the wire to be passed through a yacht’s stanchion holes to facilitate installation and removal.

It is advisable to check the existing stanchion holes before ordering your new guard wires.

Use a set of digital vernier calipers to make the results easy to read and record.

For 4mm and 5mm guard wires the holes in the stanchions normally need to be a minimum 8mm clearance diameter.

8mm Clearance means large enough to allow an 8mm diameter fitting to pass through, without getting stuck or meeting any resistance in the process.

A swage short stud is normally used in conjunction with a lanyard eye:

Swage Short Stud

A swage closed body stud is normally used in conjunction with an adjustable fork, a guardrail adjuster or other turnbuckle/rigging screw with a complete barrel (body). The adjustment is secured with a locking nut rather than a split pin:

Swage closed body stud

A swage open body stud is normally used in conjunction with a turnbuckle/rigging screw which has a barrel with the sides cut away so that you can see the threads.
The adjustment is secured with a split pin through the hole on the end of the stud.
Open body studs are more commonly used for standing rigging, but they may be the only option to meet your specific guard wire requirements if the specification is a little out of the ordinary:

Swage Open Body Stud

The dimensions in the tables below have been compiled by the Jimmy Green Rigging Team from the manufacturer specifications to determine the minimum clearance hole diameter required for each type of stud.

The table also includes the thread length for assessing the scope of adjustment.

Ø = diameter
MCSHR = Absolute Minimum Clearance Stanchion Hole Required

Short Swage Stud Terminal Dimensions for Sta-Lok and Petersen

Sta-Lok Short Stud
Sta-Lok Wire Ø Terminal Ø Thread Thread Direction Thread Length MCSHR
051-04-SH 4mm 7.4mm 5/16" UNF Right Hand 11.1mm 8mm
051-04M8-SH 4mm 7.4mm M8 Right Hand 11.1mm 8mm
051-05-SH 5mm 9.0mm 5/16" UNF Right Hand 11.1mm 9.5mm
051-05M8-SH 5mm 9.0mm M8 Right Hand 11.1mm 9.5mm
051-06-SH 6mm 12.4mm 5/16" UNF Right Hand 11.1mm 13mm
051-06M8-SH 6mm 12.4mm M8 Right Hand 11.1mm 13mm

Petersen Short Stud
Petersen Wire Ø Terminal Ø Thread Thread Direction Thread Length MCSHR
GRS5/16X4L 4mm 7.5mm 5/16" UNF Left Hand x 8mm
GRS5/16X5L 5mm 9.1mm 5/16" UNF Left Hand x 9.5mm

Closed Body Stud Terminal Dimensions for Sta-Lok and Petersen

Sta-Lok Closed Body Stud
Sta-Lok Wire Ø Terminal Ø Thread Thread Direction Thread Length MCSHR
061-04-M6L 4mm 7.4mm M6 Left Hand 56mm 8mm
061-04-M6R 4mm 7.4mm M6 Right Hand 56mm 8mm
061-04-M8L 4mm 7.4mm M8 Left Hand 60mm 8mm
061-04-M8R 4mm 7.4mm M8 Right Hand 60mm 8mm
061-05-M8L 5mm 9.0mm M8 Left Hand 60mm 9.5mm
061-05-M8R 5mm 9.0mm M8 Right Hand 60mm 9.5mm
061-05-M10L 5mm 9.0mm M10 Left Hand 67mm 9.5mm
061-05-M10R 5mm 9.0mm M10 Right Hand 67mm 9.5mm
061-06-M10L 6mm 12.4mm M10 Left Hand 67mm 13mm
061-06-M10R 6mm 12.4mm M10 Right Hand 67mm 13mm
061-06-M12L 6mm 12.4mm M12 Left Hand 81mm 13mm
061-06-M12R 6mm 12.4mm M12 Right Hand 81mm 13mm

Petersen Closed Body Stud
Petersen Wire Ø Terminal Ø Thread Thread Direction Thread Length MSHR
SC5/16x4 4mm 7.5mm 5/16" UNF Right Hand 54mm 8mm
SC5/16x5 5mm 9.1mm 5/16" UNF Right Hand 54mm 9.5mm
SC3/8x5 5mm 9.1mm 3/8" UNF Right Hand 68mm 9.5mm
SC3/8x6 6mm 12.5mm 3/8" UNF Right Hand 68mm 13mm
SC7/16x6 6mm 12.5mm 7/16" UNF Right Hand 75mm 13mm

Open Body Stud Terminal Dimensions for Sta-Lok and Petersen

** N.B. the thread length dimension includes the short extra part that accommodates the split pin hole

open body swage stud thread length explained

Sta-Lok Open Body Stud
Sta-Lok Wire Ø Terminal Ø Thread Thread Direction Thread Length** MCSHR
051-04-1/4 4mm 7.4mm 1/4" UNF Right Hand 56mm 8mm
051-04 4mm 7.4mm 5/16" UNF Right Hand 60mm 8mm
051-05-5/16 5mm 9.0mm 5/16" UNF Right Hand 60mm 9.5mm
051-05 5mm 9.0mm 3/8" UNF Right Hand 67mm 9.5mm
051-06-3/8 6mm 12.4mm 3/8" UNF Right Hand 67mm 13mm
051-06 6mm 12.4mm 7/16" UNF Right Hand 75mm 13mm

Petersen Open Body Stud
Petersen Wire Ø Terminal Ø Thread Thread Direction Thread Length ** MSHR
SO5/16x4 4mm 7.5mm 5/16" UNF Right Hand 49mm 8mm
SO5/16x5 5mm 9.1mm 5/16" UNF Right Hand 49mm 9.5mm
SO3/8x5 5mm 9.1mm 3/8" UNF Right Hand 63mm 9.5mm
SO3/8x6 6mm 12.5mm 3/8" UNF Right Hand 63mm 13mm
SO7/16x6 6mm 12.5mm 7/16" UNF Right Hand 68mm 13mm