Is the Quad Coupling K, Stainless Steel compatible with other 24° DIN 2353 fittings and standard metric-threaded components?

Yes. The Quad Coupling K, Stainless Steel is designed around the standardized 24° DIN 2353 socket and robust external metric threads, so it is compatible with other 24° DIN 2353 fittings and standard metric‑threaded components. Its adherence to DIN 2353 dimensions and thread standards (available in both L light and S heavy series) ensures secure, leak‑free mating with matching fittings across compact and heavy‑duty systems. Manufactured from AISI 316 stainless steel, it also maintains reliable mechanical and corrosion resistance when integrated into mixed assemblies.

Can the Quad Coupling K, Stainless Steel be used in high-vibration environments without additional locking or support measures?

Quad Coupling K, Stainless Steel Format is constructed from AISI 316 stainless steel with a standardized 24° DIN 2353 socket and robust external metric threads, offering excellent corrosion resistance and high-pressure sealing. These features make it well suited for demanding hydraulic and pneumatic systems and improve vibration resilience compared with lower-grade fittings. However, whether it can be used in high-vibration environments without additional locking or support depends on the installation and application specifics. While the precise seat and strong threads reduce the risk of loosening, repeated dynamic loading, shock, or extreme vibration frequencies can still lead to thread fatigue or gradual loosening over time. For critical systems, long service intervals, or safety-related applications, industry best practice is to use supplementary measures such as mechanical locking devices (locknuts, safety clips), thread-locking compounds rated for hydraulic use, or additional structural support and vibration-damping mounts. In summary: Quad Coupling K, Stainless Steel Format offers good inherent resistance to vibration thanks to its material and design, but for high-vibration or safety-critical installations, additional locking or support is recommended to ensure long-term reliability.

Quad Coupling K, Stainless Steel

Additional information

Material	SS – stainless steel

The DIN 2353 four-way connector, type K, is a highly reliable solution designed for demanding hydraulic and pneumatic applications. Featuring a precise 24° DIN 2353 socket combined with robust external metric threads, it ensures secure and leak-free connections even under high pressure. Available in both the L (light series) and S (heavy series) versions, it offers flexibility to match diverse system requirements, from compact installations to heavy-duty industrial environments. Manufactured from premium AISI 316 stainless steel, the connector delivers exceptional resistance to corrosion, making it ideal for use in aggressive or outdoor conditions. Its durable construction guarantees long service life, while the standardized design ensures compatibility with a wide range of components. This connector is the perfect choice for engineers and technicians seeking a dependable, high-performance fitting that enhances system safety, efficiency, and durability.

List of product variants

Article number	Product variant name	Nominal inner diameter	Working pressure [bar]
HD-K-06L-SS	DIN 2353 fitting K 6L, AISI 316	-	315
HD-K-06S-SS	DIN 2353 fitting K 6S, AISI 316	-	630
HD-K-08L-SS	DIN 2353 fitting K 8L, AISI 316	-	315
HD-K-08S-SS	DIN 2353 fitting K 8S, AISI 316	-	630
HD-K-10L-SS	DIN 2353 fitting K 10L, AISI 316	-	315
HD-K-10S-SS	DIN 2353 fitting K 10S, AISI 316	-	630
HD-K-12L-SS	DIN 2353 fitting K 12L, AISI 316	-	315
HD-K-12S-SS	DIN 2353 fitting K 12S, AISI 316	-	630
HD-K-14S-SS	DIN 2353 fitting K 14S, AISI 316	-	630
HD-K-15L-SS	DIN 2353 fitting K 15L, AISI 316	-	315
HD-K-16S-SS	DIN 2353 fitting K 16S, AISI 316	-	400
HD-K-18L-SS	DIN 2353 fitting K 18L, AISI 316	-	315
HD-K-20S-SS	DIN 2353 fitting K 20S, AISI 316	-	400
HD-K-22L-SS	DIN 2353 fitting K 22L, AISI 316	-	160
HD-K-25S-SS	DIN 2353 fitting K 25S, AISI 316	-	400
HD-K-28L-SS	DIN 2353 fitting K 28L, AISI 316	-	160
HD-K-30S-SS	DIN 2353 fitting K 30S, AISI 316	-	400
HD-K-35L-SS	DIN 2353 fitting K 35L, AISI 316	-	160
HD-K-38S-SS	DIN 2353 fitting K 38S, AISI 316	-	315
HD-K-42L-SS	DIN 2353 fitting K 42L, AISI 316	-	160

The DIN 2353 four-way connector, type K, is a highly reliable solution designed for demanding hydraulic and pneumatic applications. Featuring a precise 24° DIN 2353 socket combined with robust external metric threads, it ensures secure and leak-free connections even under high pressure. Available in both the L (light series) and S (heavy series) versions, it offers flexibility to match diverse system requirements, from compact installations to heavy-duty industrial environments. Manufactured from premium AISI 316 stainless steel, the connector delivers exceptional resistance to corrosion, making it ideal for use in aggressive or outdoor conditions. Its durable construction guarantees long service life, while the standardized design ensures compatibility with a wide range of components. This connector is the perfect choice for engineers and technicians seeking a dependable, high-performance fitting that enhances system safety, efficiency, and durability.