Part #: K4NYSU3A

4-Inch Thread On Stainless Steel and Nylon Quick Connect Assembly, Black EPDM Gasket

Salco Products (K4NYSU3A) 4-Inch Thread On Stainless Steel and Nylon Quick Connect Assembly, Black EPDM Gasket fits a 5-1/4-inch rail road thread. The quick connect adapter is made out of 316 stainless steel, and features a 4-inch cam groove. Includes a 3/8-inch, 18-8 stainless steel, chain with 15 links, a 3/8-inch by 3-1/2-inch, 18-8 stainless steel, S-hook, a 3/8-inch by 1-3/4-inch, 18-8 stainless steel, hex bolt, a 3/8-inch, 18-8 stainless steel, nut, and two (2) 3/8-inch, 18-8 stainless steel, flat washers. Comes with a sulfur cured black EPDM gasket. The 4-inch, quick connect, cammed cap is made out of nylon with 304 stainless steel straight cam arms. Features a 1-inch male NPT nylon plug assembly with 1/4-inch, zinc plated carbon steel, repair link, and a 3/16-inch by 17-inch stainless steel cable. Cap comes with a sulfur cured black EPDM gasket. AAR Adapter Approval # E-139514, Cap Approval # E-139515, Not Approved for DOT Stenciled Cars.

Default CAD icon
CAD Drawing
Download CAD

Key features

Default Feature icon

Provides direct connection to kam and grooved hoses or adapters, no additional components required.

Default Feature icon

3", 4" and 6" sizes.

Default Feature icon

Reducing Flanges available.

Default Feature icon

Designed to provide a secure fitting that will minimize leaks and spills.

Default Feature icon

DOT (threaded) and AAR (kammed) approved designs.

Default Feature icon

Assemblies include adapter, cap, plug, chain and gaskets.

Default Feature icon

Available in Stainless Steel or Ductile Iron.

Default Feature icon

Contact your Salco Representative for the specific adapter types and sizes that will fit your needs.

Specifications

Adapter Material
316 Stainless Steel
Cap Material
Nylon
Gasket Material
Black EPDM Sulfur Cured
Location
Bottom
Size
4"

Resources

Product Card • December 17, 2025

Bottom Unloading Adapters