1/8IN H.C. STUD 1/4-28 LH X 1 1/2IN
Hand Crimp Life Line Studs

Hand Crimp - Left Hand Thread Lifeline Studs

316 Stainless Steel - Left Hand Thread

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Finding a replacement stud for a lifeline fitting can be somewhat overwhelming. Lifeline studs are available in a bewildering number of combinations of wire diameters in hand crimp or machine swage terminals, and with left- or right-hand threaded studs that come in various diameters and lengths.
Here are some tips which may be helpful in finding the stud you need. NOTE:   These tips are generalized - some exceptions exist:

• First, decide if you need a machine swage or hand crimp stud - see below if you need help with this
• Those studs marked "For General Use" are used by the manufacturer in a variety of lifeline fittings
• Those studs marked for use with particular fittings are generally not used in other fittings
• The stud (wire) end of Johnson Lifeline Turnbuckles is generally left handed *
• The stud (wire) end of Hayn Lifeline Turnbuckles is generally right handed *
• Gate Eyes take short 3/8" or 7/16" left hand threaded studs (the available very short right hand studs are generally used for architectural [button] applications)
• Pelican Hooks usually use 1-1/2" or 2-3/8" studs; Johnson are generally left handed, but Hayn and Sea-Dog Pelican Hooks are right handed
• Short Lifeline Adjusters use studs with 1-1/2" long threads
• Standard Lifeline Adjusters use 2-1/4" and 3-1/4" right hand studs
• Studs used in fittings without locking nuts - such as open body and "slotted" tubular turnbuckles - are usually cross-drilled at the tip to accept a cotter pin or ring, so they can be secured from accidental loosening

Heavy on the technical side...

Hand Crimp terminals, when properly applied, are approximately 65% - 70% the strength of 7 x 7 stainless steel wire.
While this has proven adequate for use in lifelines, these fittings should not be used for standing rigging or other high load applications.
For correct attachment, manufacurer's instructions must be followed.

Is Your Lifeline Terminal a Machine Swage or a Hand Crimp?
Generally, a machine swage terminal has a relatively thick wall, with a beveled end. Hand crimp terminals are relatively longer, with thinner walls and straight cut ends without a bevel.
Note that the above only applies to terminals on lifeline fittings. Rigging terminals are ALWAYS machine swaged.

Left or Right Hand Threaded Stud?
Hold the threaded fitting in front of you with the threaded stud oriented vertically.
On a right-hand threaded stud, the threads will slope slightly upward to the right.
On a left-hand threaded stud, the threads will slope slightly upward to the left.
This works no matter which end of the stud is pointing up.
Take your time. The finer the thread, the smaller the slope - and the more difficult it is to determine its angle. Use a magnifying glass, if you have to.

* In standing rigging turnbuckles, as opposed to lifeline turnbuckles the general rule is that the Left hand threaded end is the Lower end. However, on least some Taiwanese sailboats the right hand thread is used at the lower end.
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Sku#Item IDJohnson Marine Hardware#AvailabilityDescriptionUOMYour PriceQTY
45018JOH 31-601 31-601Loading...LH HC Lifeline Stud - 1⁄8" Wire, 1⁄4-28 LH x 3⁄8" Thread (Use with 26-407 GE, -408 GE)Loading...
45019JOH 31-602 31-602Loading...LH HC Lifeline Stud - 1⁄8" Wire, 1⁄4-28 LH x 1-1⁄2" Thread, Cross-Drilled (Use with 26-406 ADJ -784 PH)Loading...
11639JOH 31-603 31-603Loading...LH HC Lifeline Stud - 1⁄8" Wire, 1⁄4-28 LH x 2-1⁄2" Thread (Use with 26-401 TB, -403 PH, -412 TB, -884 PH)Loading...
45020JOH 31-604 31-604Loading...LH HC Lifeline Stud - 1⁄8" Wire, 1⁄4-28 LH x 2-1⁄2" Thread, Cross-Drilled (Use with 26-404 PH)Loading...
11640JOH 31-605 31-605Loading...LH HC Lifeline Stud - 3⁄16" Wire, 5⁄16-24 LH x 3⁄8" Thread (Use with 27-407 GE, -408 GE)Loading...
45021JOH 31-606 31-606Loading...LH HC Lifeline Stud - 3⁄16" Wire, 5⁄16-24 LH x 2" Thread (Use with 27-406 ADJ, 27-886 PH)Loading...
11641JOH 31-607 31-607Loading...LH HC Lifeline Stud - 3⁄16" Wire, 1⁄4-28 LH x 2-1⁄2" Thread (Use with 27-401 TB, -412 TB, -403 PH)Loading...
45022JOH 31-608 31-608Loading...LH HC Lifeline Stud - 3⁄16" Wire, 1⁄4-28 LH x 2-1⁄2" Thread (Use with 27-404 PH)Loading...
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