# Buy Hex Bolt Grade 5 UNF 1/2x4 inch at Autoservice ## Hex bolt Grade 5 electroplated UNF 1/2x4 inch Fasteners / Bolts / Bolts not metric High-quality hex bolt with UNF thread, ideal for secure fastening in various applications. ## Prices and stock - **SIN-BL-BNF12-4**: € 4,98 incl. VAT — backorder ## Order URL [Hex bolt Grade 5 electroplated UNF 1/2x4 inch](https://www.auto-service.be/en/fasteners/bolts/bolts-not-metric/hex-bolt-grade-5-electrolitic-zinc-plated-unf-12x4in-1st) ## Alternate URLs - **nl**: [Hex bolt Grade 5 electroplated UNF 1/2x4 inch](https://www.auto-service.be/nl/bevestigingsmateriaal/bouten/bouten-niet-metrisch/zeskantbout-grade-5-electrolitisch-verzinkt-unf-12x4in-1st) - **fr**: [Hex bolt Grade 5 electroplated UNF 1/2x4 inch](https://www.auto-service.be/fr/materiel-de-fixation/boulons/boulons-non-metriques/grade-5-boulon-electrozingue-unf-12x4in-1pc) - **en**: [Hex bolt Grade 5 electroplated UNF 1/2x4 inch](https://www.auto-service.be/en/fasteners/bolts/bolts-not-metric/hex-bolt-grade-5-electrolitic-zinc-plated-unf-12x4in-1st) ## Images - ![Product image](https://www.auto-service.be/assets/media/7976/conversions/zeskantbout-grade-5-electrolitisch-verzinkt-unf-12x4in-1st-9253-optimized.jpg) ## Specifications - **Reference**: SIN-BL-BNF12-4 ## Product description ### Robust hex bolt for reliable fastening This Grade 5 steel hex bolt offers excellent strength and durability for various applications. With a diameter of 1/2 inch and a length of 4 inches, this bolt is suitable for secure connections in both automotive and industrial sectors. ### Technical specifications - **Material**: Steel (Grade 5, comparable to 8.8) - **Thread type**: Unified National Fine (UNF) - **Diameter**: 1/2 inch (12.7 mm) - **Length**: 4 inch (101 mm) - **Pitch**: 20 threads per inch - **Wrench size**: 3/4 inch (19.05 mm) - **Head height**: 7.9 mm ### Electroplated finish The electroplated coating provides effective protection against corrosion, significantly extending the bolt's lifespan. This finish is ideal for applications where the bolt is exposed to moist or corrosive environments. ### Application possibilities This hex bolt is versatile for use in various sectors: - **Automotive**: Suitable for engine and chassis components. - **Industrial machinery**: For mounting heavy parts. - **Construction sector**: Applicable in steel structures and other building projects. ### Advantages of UNF thread The fine UNF thread offers: - **Higher tensile strength**: The finer pitch distributes the load more evenly. - **Better vibration resistance**: Reduces the risk of loosening due to vibrations. ### Compatibility and installation This bolt is compatible with nuts and other fasteners with UNF 1/2 inch thread. For optimal installation, it is recommended to use a torque wrench to ensure the correct tightening force. ### Quality standards Manufactured according to DIN 931 standard, ensuring precise dimensions and high quality. The Grade 5 classification guarantees reliable strength for demanding applications. ### Availability This hex bolt is available in various packaging quantities, so you can order exactly the amount you need for your project. ## Breadcrumbs - [Fasteners](https://www.auto-service.be/en/fasteners) - [Bolts](https://www.auto-service.be/en/fasteners/bolts) - [Bolts not metric](https://www.auto-service.be/en/fasteners/bolts/bolts-not-metric) ## Related products - [Hex bolt Grade 5 electroplated UNC 1/4x3.1/2 (5 pieces)](https://www.auto-service.be/en/fasteners/bolts/bolts-not-metric/hex-bolt-grade-5-electrolitic-zinc-plated-unc-14x312-5pcs) - [Hex bolt Grade 5 electroplated UNC 3/4x3 inch](https://www.auto-service.be/en/fasteners/bolts/bolts-not-metric/hex-bolt-grade-5-electrolitic-zinc-plated-unc-34x3in-1st) - [Hex bolt Grade 5 electroplated UNF 3/4x3.3/4](https://www.auto-service.be/en/fasteners/bolts/bolts-not-metric/hex-bolt-grade-5-electrolitic-zinc-plated-unf-34x334-1) - [Hex bolt Grade 5 electroplated UNF 5/16x3 inch (5 pieces)](https://www.auto-service.be/en/fasteners/bolts/bolts-not-metric/hex-bolt-grade-5-electrolitic-zinc-plated-unf-516x3in-5st) - 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