Brass Pipe Reducing Coupling: 4 x 3" Fitting, FNPT x FNPT, Class 125, Lead Free MPN:XNL112-6448

SHCS Steel #4-40 1 1/8 L PK5500 is an economical and versatile self-clinching insert that offers a recessed circular thread formed in one piece with the attachment material, eliminating the need for secondary processes such as tapping or welding. With its easy installation process, these inserts provide superior torque, tensile, and pullout strength while being ideal for applications such as plastic injection molded parts that require both high tensile strength and thread form. Offered in steel 4-40 grade and with 1-1/8 length PK5500 series, these insert can be used across various industries including automotive, aerospace, electronics, telecoms among others where self-clinching fasteners play a critical role.