Name: Machine screw - CSK - HEX SOCKET DIN7991 8.8 PoolFIX®Coated M4x8mm
Brand: PoolFIX
SKU: BT-D7991-04x8
Price: 0.38 GBP
Availability: InStock

PoolFIX coated is the primary PoolFIX system for approximately 95% of suitable applications. This market position never replaces product-specific validation.

When no validated product/application rule matches, the result is Technical review required.

Why PoolFIX coated?

Volume & price estimate

Available in multiple pool colours

Which coating build-up suits your pool?

Assess which finish suits your pool.

Tilework can create recurring maintenance questions.

A project-specific route to a seamless finish.

Traditional tilework versus ACRATON® Dolphin

Bolts, nuts and screws form part of a larger assembly. Their suitability depends on material, coating, geometry, load, substrate, exposure and installation. Review the product specification and the actual application together.

Application

Prepare draft wording that records application, load, substrate, exposure, installation method, inspectability and available product documentation. Open issues remain visible until assessed by an authorised project party.

Draft specification based on your project data

Specification Generator

Draft specification for fastening materials in pool buildings

Fill in the details that should appear on the specification.

Step 1 — Project details

Optional. All fields appear on the cover of the specification and in the revision-management table.

Step 2 — Parties involved & Revision

Check what will be carried out in this project. Activities are grouped by discipline.

Step 3 — Which activities apply?

Quick actions on all

Use the quick buttons to classify multiple activities at once, or adjust each row.

Step 4 — Zone classification per activity

Complete project dossier: PDF + Word + checklist + order list with QR codes

We will send the PDF directly to {{email}} so you can archive it, forward it, or follow up. Our team will receive a copy so we can help you with article selection and certificates.

Receive the specification by email

This draft records the entered assumptions and open issues. Following a specification does not automatically remove individual duties, a duty to warn or liability. Have material selection and execution assessed for the project.

Important:

Summary — ready to generate

Project dossier contains: specification.pdf · specification.docx · checklist.pdf · order-list.pdf (with QR codes to the webshop) · README.txt — ideal for architects and contractors.

Common stainless-steel grades and other metals may have limitations in certain pool conditions. Assess material, load, location, exposure and installation against the applicable requirements and verified product information.

Material selection requires project-specific assessment

Quote Request

PoolFIX product documentation and batch traceability are supplied where applicable. A certificate does not replace application validation or structural design.

Documentation and traceability

This document is not yet a final order. Place the order in the webshop to confirm it.

ERP order request

Payment by invoice

Your order

The party placing the order

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Quotation request received

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Primary PoolFIX system for validated suitable applications.

PoolFIX coated

PoolFIX coated is always assessed first. 1.4529 is not a premium, universal or standard pool solution.

Restricted pre-approved ground-level exception within 1.0 metre / 3.3 ft of water; never overhead or suspended.

1.4529 HCR / Alloy 926

PoolFIX material hierarchy

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You will receive the invoice by email after dispatch. Payment term: {days} days net.

Payment by invoice — no prepayment

Order confirmation {order_number} — PoolFIX

Order confirmation

PoolFIX coated is assessed first against validated product rules. 1.4529 HCR / Alloy 926 is a restricted ground-level exception only.

Application-specific fasteners for pool environments

Specification for municipalities

Responsibilities by project role

Specification and standards framework

Practical knowledge pages for municipalities, architects, contractors and legal experts — with direct access to the generator.

Support for your specification

A2 and A4 are considered corrosion-resistant materials in many general construction and installation applications. A swimming-pool hall, however, is an exceptional environment in which chloride load and tensile stresses can lead to stress corrosion cracking.

‘But it’s stainless steel, isn’t it?’ is not a material justification in a swimming pool.

For everyone who must be able to justify material choices in a swimming pool.

Material safety in swimming-pool environments

Can you substantiate the material choice for each location?

Do not use 1.4529 as a universal replacement. Before selection, confirm that a current, approved product-specific rule covers the exact location and application.

PoolFIX guideline for 1.4529 HCR

Even highly alloyed stainless steel is not entirely risk-free.

Stainless steel can develop hidden cracking in a pool environment.

The right question is: which material belongs in this specific location?

A research result is usable only within its described method and conditions and is not an individual failure probability for every pool.

Common stainless steels such as A2/304 and A4/316 may be susceptible to stress corrosion cracking under tensile stress and chloride exposure.

1.4529 HCR is not a universal solution. Use only within a verified product-specific rule and project assessment.

Check the coating specification and application limits for the exact item and project.

Research questions reveal application limits.

From general fastening to demonstrable material selection.

General approach

PoolFIX approach

After an incident, can you demonstrate why this material was selected?

That is why material selection in a swimming-pool environment must be based on application, exposure and demonstrable suitability — not only on the term ‘stainless steel’.

The danger is not always visible from the outside.

Applicable requirements depend on the project country, authority and technical specification. No standard automatically approves a PoolFIX product.

Standards, codes and guidance

Not automatically applicable as UK or US law

NEN 9200 (Dutch technical reference — local applicability requires validation) is a Dutch standard and does not automatically approve a product or establish local law outside the Netherlands.

The responsible project team must establish applicable local requirements and product-specific application validation.

This product no longer exists or is inactive.

Product not found

Wide range of fastening articles for your pool

Our Products

Record the exact product, installation position, exposure, load, substrate, cleaning conditions and available project documents before selection.

Project application data

References

Non-standard, overhead, suspended or insufficiently documented applications require project-specific technical review. 1.4529 must never be used overhead or suspended.

Technical review

Certificate of Compliance

Certificaatnummer, uitgiftedatum en status maken het document eenduidig herkenbaar.

Unieke identificatie

De relatie tussen levering, projectreferentie en geleverde artikelen blijft zichtbaar.

Ordercontext

Artikelcode, omschrijving, hoeveelheid en relevante materiaalgegevens staan bij elkaar.

Productinformatie

De toepasselijke normen en documentreferenties worden transparant benoemd.

Normenkader

What the certificate records

A clear Certificate of Compliance.

Discuss the documentation and product information your project needs with PoolFIX.

Make traceability part of your project.

Het bijbehorende Certificate of Compliance met unieke referentie en uitgiftedatum.

Certificaat

Ordernummer, afleverdatum en de relatie met project en ontvanger.

Levering

Artikelgegevens, materiaaltoepassing en relevante normen in één context.

Product & normen

Een chronologisch overzicht dat latere controles en overdracht ondersteunt.

Inspectiehistorie

When a QR reference is available, it can open the linked record. Always check that the data belongs to the specific delivery.

Access without searching for documents

What the passport contains

A digital record for configured deliveries.

A consistent structure can connect material, application and delivery data.

Engineering information

If issued for the specific delivery, the certificate contains the order, item and document information stated in it.

An available QR reference can lead authorised users to the associated product record.

Digital traceability

Available documents can be retained for maintenance, handover and later checks.

Digital archive

Recorded deliveries, documents and inspections can form a clear history.

Project history

An available digital record can be shared with authorised parties.

Controlled access

Built for technical control and long-term management

In pool environments, the selected product matters, but so does the ability to substantiate the choice, delivery and follow-up later. A coherent record supports careful management, accelerates handover and helps demonstrate which materials and documents belong to a project.

Good engineering deserves demonstrable documentation.

Manufactured

Documented

Delivered

Installed

Reviewed

Traceability throughout the lifecycle

Documentation beyond the packing slip.

Cart

A material certificate is supplied only when it is available and verified for the selected item and specific order.

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Available accessories in the same size as your bolt

Would you like to add these?

Available in every RAL colour. Approximate lead time: 3 working days.

Custom RAL colour

Choose a specific size first; the datasheet can then be downloaded directly as a PDF from the product details.

Request this document by email; we usually send it within one working day.

Warehouse closed for holiday

A partially threaded bolt only has thread on its final section; most of the shank is smooth. This allows two materials to be clamped together correctly.

Webshop

See how to switch locations and use a separate cart for each one.

Order for all your pools

Guided tours

PoolFIX coated countersunk socket head bolts provide easy installation with integrated friction bearing. Please note: when used in stair treads, hydrogen peroxide in your cleaning products corrodes the surface layer.

Machine screw - CSK - HEX SOCKET DIN7991 8.8 PoolFIX®Coated_M4x8mm

Toepassing en documentatie

Toepassing

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