# Buy Hexagon bolt 8.8 DIN931 M4x40 at Autoservice ## Hexagon bolt 8.8 DIN931 electrolytically galvanized M4x40 (100 pieces) Fasteners / Bolts / Hex bolts High-quality M4x40 hexagon bolts, grade 8.8, electrolytically galvanized for optimal protection. ## Prices and stock - **SIN-B4-40-BULK**: € 29,92 incl. VAT — 9 in stock ## Order URL [Hexagon bolt 8.8 DIN931 electrolytically galvanized M4x40 (100 pieces)](https://www.auto-service.be/en/fasteners/bolts/hex-bolts/hexagon-bolt-88-din931-electrolitic-zinc-plated-m4x40-100pcs) ## Alternate URLs - **nl**: [Hexagon bolt 8.8 DIN931 electrolytically galvanized M4x40 (100 pieces)](https://www.auto-service.be/nl/bevestigingsmateriaal/bouten/zeskantbouten/zeskantbout-88-din931-electrolitisch-verzinkt-m4x40-100st) - **fr**: [Hexagon bolt 8.8 DIN931 electrolytically galvanized M4x40 (100 pieces)](https://www.auto-service.be/fr/materiel-de-fixation/boulons/boulons-hexagonaux/vis-a-tete-hexagonale-88-din931-electrozingue-m4x40-100pc) - **en**: [Hexagon bolt 8.8 DIN931 electrolytically galvanized M4x40 (100 pieces)](https://www.auto-service.be/en/fasteners/bolts/hex-bolts/hexagon-bolt-88-din931-electrolitic-zinc-plated-m4x40-100pcs) ## Images - ![Product image](https://www.auto-service.be/assets/media/7575/conversions/zeskantbout-88-din931-electrolitisch-verzinkt-m4x40-100st-8851-optimized.jpg) ## Specifications - **Reference**: SIN-B4-40-BULK - **Materiaal**: Staal - **Diameter ⌀**: M4 - **Lengte (product)**: 40 mm - **Spoed**: 0.7 mm - **Sleutelwijdte**: 8 mm - **Sterkte Klasse**: 8.8 - **Normering**: DIN 931 - **Oppervlakte Bedekking**: Electrolitisch Verzinkt - **Soort kop**: Zeskant - **Aantal in verpakking**: 100 - **ADR Classificatie**: Geen ADR Classificatie - **Material**: Steel - **Length (product)**: 40 mm - **Spindle**: 0.7 mm - **Key width**: 8 mm - **Strength Class**: 8.8 - **Standard**: DIN 931 - **Surface Coverage**: Electrolytic Galvanized - **Head type**: Zeskant - **Quantity in packaging unit**: 100 - **ADR Classification**: No ADR Classification ## Product description ### Robust hexagon bolts for reliable fastening These hexagon bolts with a diameter of M4 and a length of 40 mm are made from grade 8.8 steel, ensuring high tensile strength and reliability in various applications. The electrolytic galvanization provides excellent corrosion protection, making them suitable for both indoor and outdoor use. ### Technical specifications - **Diameter** : M4 - **Length** : 40 mm - **Strength class** : 8.8 - **Surface treatment** : Electrolytically galvanized - **Thread direction** : Right - **Wrench size** : 7 mm - **Head height** : 2.8 mm - **Thread pitch** : 0.7 mm ### Standards and certifications These hexagon bolts comply with DIN 931 and ISO 4014 standards, ensuring consistency in dimensions and quality. Adherence to these international standards makes them compatible with a wide range of applications and systems. ### Versatile application possibilities Thanks to their robust construction and corrosion-resistant finish, these bolts are ideal for: - **Automotive applications** : Fastening of body and engine parts. - **Construction sector** : Assembly of metal structures and frames. - **Mechanical engineering** : Assembly of various mechanical components. ### Advantages of electrolytic galvanization Electrolytic galvanization offers several advantages: - **Corrosion protection** : Forms a protective layer that delays rust formation. - **Aesthetic appearance** : Gives the bolts a shiny, professional look. - **Improved durability** : Extends the lifespan of the bolts, even in humid environments. ### Packaging and availability These hexagon bolts are supplied in sets of 100 pieces, ensuring sufficient stock for both small and larger projects. The packaging is designed for easy transport and storage, with clear labeling for quick identification. ### Compatibility with nuts and washers For optimal fastening, it is recommended to combine these bolts with matching M4 nuts and washers. This ensures a firm and secure connection, essential in applications where vibrations and loads play a role. ### Maintenance and storage To maintain the quality and performance of the bolts, it is advisable to store them in a dry place and avoid contact with aggressive chemicals. Regular inspection for wear or damage ensures continued reliable use. ## Breadcrumbs - [Fasteners](https://www.auto-service.be/en/fasteners) - [Bolts](https://www.auto-service.be/en/fasteners/bolts) - [Hex bolts](https://www.auto-service.be/en/fasteners/bolts/hex-bolts) ## Related products - [Hexagon bolt 8.8 DIN931 electrolytically galvanized M12x80 (100 pieces)](https://www.auto-service.be/en/fasteners/bolts/hex-bolts/hexagonal-bolt-88-din931-electrolitic-zinc-plated-m12x80-100pcs) - [Hex bolt 8.8 DIN931 electrolytically galvanized M16x280 (5 pieces)](https://www.auto-service.be/en/fasteners/bolts/hex-bolts/hex-bolt-88-din931-electrolitic-zinc-plated-m16x280-5pcs) - [Hexagon bolt M18x160 8.8 DIN931 electroplated zinc](https://www.auto-service.be/en/fasteners/bolts/hex-bolts/hexagonal-bolt-88-din931-electrolitic-zinc-plated-m18x160-25pcs) - [Hexagon bolt 8.8 DIN931 electrolytically galvanized M18x90 (25 pieces)](https://www.auto-service.be/en/fasteners/bolts/hex-bolts/hexagonal-bolt-88-din931-electrolitic-zinc-plated-m18x90-25pcs) - 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