Special Tension Link Bolts with Urethane Wrap Option

This special tension link bolt variant is used in mold-opening controller systems that rely on tension link assemblies to maintain consistent retention and controlled movement. In automotive connector and small appliance connector molds, the urethane wrap option can protect the retainer area against repeated contact and micro-wear, helping sustain fastening stability over long production runs.

In appliance and electronics housing molds, tension link mechanisms often experience frequent cycling and localized abrasion near the retainer zone. Using the urethane-in-retainer configuration helps reduce wear where components rub or seat, supporting longer durability and more predictable fit-up.

• Urethane retainer protection is suited when abrasion or wear at the retainer area is a known failure mode.
• D matching (10/13/16/20 mm) supports correct fit in tension link special bolt installation across common diameters.
• L matching (13/20 mm) supports correct engagement length for the assembly stack-up.

The provided data specifies an urethane wrap option in the retainer area (Included in Retainer: No or Yes), which primarily affects surface wear behavior and durability at contact points. No steel grade, hardness (HRC), or heat-treatment state is listed in the supplied specifications.

From a manufacturing perspective, the urethane option indicates an added protective layer applied or integrated into the retainer region for abrasion resistance. This typically improves wear resistance at sliding/contact interfaces, while the bolt’s underlying strength and toughness depend on the base fastener material and its heat treatment—information not provided here.

• Urethane included: better retainer-area protection against repeated seating/contact wear.
• Urethane not included: appropriate when the application does not demand additional abrasion protection or when elastomer presence must be avoided.

Select the tension link bolt dimensions to match the tension link assembly’s required shaft diameter (D) and engagement length (L). This product is available with D = 10, 13, 16, or 20 mm and L = 13 or 20 mm.

To dimension-match correctly, align D with the mating features of the tension link special bolt installation (e.g., the corresponding bore or receiving geometry in the assembly). Then confirm L provides the intended engagement depth in the stack-up to achieve reliable fastening retention without bottoming.

• Urethane retainer option: choose “Yes” when additional surface protection at the retainer area is required for durability.
• Fit and tolerance: ensure the selected D and L match the assembly’s specified tolerances and clearances; the urethane option can slightly affect local seating/contact behavior at the retainer interface.