Engineered for High-Pressure Integrity: The 3680953 Studded Flange Cap Screw. This is three genuine 3680953 Studded Flange Cap Screw, a highly specialized fastener engineered for the rigorous demands of the Cumins ISX and X15 15-Liter heavy-duty engine platforms. This unique screw serves a dual function: its primary thread and flange head secure critical components—often related to the XPI (Extreme Pressure Injection) Fuel System or the exhaust manifold—while the integrated protruding stud provides a stable, secondary mounting point for accessories like heat shields or bracing. The 3680953 is precision-machined with an M10 x 1.5 mm main thread and is constructed from high-tensile steel (often Class 10.9) to meet the extreme torque and stress specifications required in high-performance diesel engines. Its robust design is crucial for preventing component separation, maintaining sealing integrity, and ensuring the longevity of engine accessories. Proper tightening to Cumins specifications is essential for maximum reliability. Cross-references of the product: Cumins 3680953, PAI 040152, Automan MFB10100815, and 3680953CUM. The superior design of 3680953 ensures a robust, multi-functional connection, fundamental for the continued high-performance and structural safety of your heavy-duty Cumins engine. Characteristics: ⦁ Part Type: Studded Flange Head Cap Screw ⦁ OEM Part Number: 3680953 ⦁ Main Thread: M10 x 1.5 mm ⦁ Accessory Stud: M8 x 1.25 mm ⦁ Compatible Engines: Cumins ISX, QSX, X15 (15-Liter)