1/2" X 3.5" HT SPRING SHACKLE BOLTS SUIT 45mm wide springs

Shackle Bolts |  1/2″ | 9/16″ | 5/8″ | 16mm | 18mm | 19mm

Shackle bolts for caravans and trailers sold by Bartel Trailers are high tensile 9/16″, 5/8″, M16, M18 or  3/4".

Suits 45mm or 60mm eye to eye with nylon bushes or shackle springs with steel bushes (Al-ko Outback rebound Series.)

How do I measure my shackle bolt?

Measure from the tip of the thread to the underside of the hex head. 

Sizes on offer

• 9/16″ Non-Greasable – 3.5″
• 9/16″ Greasable – 3.5″
• 5/8″ Greasable Short – 3.5″
• 16mm Non-Greasable – 100mm
• 16mm Greasable – 100mm
• 5/8″ Greasable Long – 4.50″
• 18mm x 90mm Rocker Roller centre pivot for AL-KO and Couplemate
• 18mm – Standard Tandem – 100mm (Al-ko Standard Tandem 710 springs)
• 3/4"x 3.5"mm for rocker roller centre pivot bolt 

The 16mm Greaseable Bolt suits a variety of leaf springs where a situation of metal on metal exists. Example, rocker springs and outback springs have a metal roller or bush that requires a greaseable bolt.

Non-greaseable bolts fit inside a self-lubricating nylon bush and do not need grease. If you springs have nylon bushes, it is not advisable to change your bolt to greaseable.

The knurl under the head has a particular purpose. The knurl locks into the shackle plate to help prevent the bolt from spinning during spring compressions. Broken welds are a good sign the bolts need replacement.

On standard tandem and outback trailer springs, the knurl is welded onto the shackle plate to stop the bolt from turning. A rotating bolt in the shackle plate, wear significantly increases.

News: How to fix Dangerous Caravan Vibration Fatigue

How to tighten a shackle bolt.

• Tighten 16mm x 100mm greaseable bolt until home.
• Back off 1/4 turn.
• You need a small space between your shackle plates and spring otherwise you will develop an annoying squeak.
• This squeak is due to no tolerance between shackle plates and spring.