Name: 6 pcs TRS-35 foot strap screws
Brand: S4LT
SKU: 15955
Availability: InStock

6 pcs TRS-35 foot strap screws

7,90 €

Screws and washers for 4 foot straps. Adjustable length between 30 and 35mm (the length of the standard screws is 28-32mm).

Scope of delivery:

6 screws 6x35mm

18 pieces of washers
(The ATW shown are for illustration purposes only and are not included in the scope of delivery!)

Why 30 – 35mm now?
Both the strength of the foot straps and that of the deck pads and anti-twist washer vary from model to model! If the screw is too short or too long, there is an increased risk of tearing! This applies both during tightening and use! So that the optimal embedment depth can be selected, the screws supplied here are a little longer than usual. The supplied washers are used to optimally adjust the screw length.

TRS-35?
The aim is to achieve the best possible pull-out resistance. This is achieved by the fact that the embedment depth of the main screw embeds as much as possible. The problem with the supplied standard screws is that they are usually too short. There can be many reasons for this, but in particular the strength of the ATW, foot straps and also deck pads differ, so that the screw is more or less deeply integrated depending on the make selected. The pull-out resistance can be reduced by up to 25% if the screws are too short!

What is different about the TRS-35?
The TRS-35 are 35mm long and come with 3 pieces of 1.6mm thick polyamide washers. The length of the screw can be adjusted between 30-35mm. The following picture shows a perfectly adjusted screw length (without washers).

Important:

Screws that are too short: increased risk of overtightening / tearing out the inserts

Screws too long: The screw tip is touching the bottom. If you continue to turn the insert or the screw, you can overtighten!

Therefore, always choose the perfect screw length!

How do I set the correct screw length?
1. Measure the hole depth of the inserts

The holes must be free of sand, dirt or other impurities! Impurities in the insert hole reduce the possible depth of the screw and can result in the screw being over-tightened!

Standard inserts are approx. 20mm deep. Measure independently!

2. Test screw connection

Use your standard screws, these should be around 28-32mm long or use the TRS-35 with all 3-polyamide washers and install one side of the foot strap. Then measure the protrusion between the pin (ATW) and the upper edge (CAP) as shown in the following picture.

3. Determine the embedment depth

Take another ATW with a cover cap and the same screw and set the protrusion measured before. Now measure the protrusion from the screw tip to the lower edge of the ATW.

Formula: measured overhang + compressed deck pad – safety distance = Embedment depth

Example: 15mm (measured) + 2 mm (cover pad) – 2mm (security) = 15 mm (embedment depth)

4. Determine the maximum screw length

Formula: insert depth – embedment depth + screw length = max. Screw length

e.g.: 20 mm (insert) – 15 mm (embedment depth) + 30mm (screw length) = 35 mm (max. screw length)

Note
If there are foreign bodies in the insert hole, this reduces the insert depth. This can lead to over-tightening the screws or inserts! The same applies to screws that are set too long. If the screws are too short, there is again the risk that the insert hole will be overtightened or the screw will tear out!