KWS Manufacturing

Screw Conveyor End Lugs & Coupling Bolts



End Lugs

End Lugs

End lugs are used to provide extra support to the first and last flight of a screw section and are located on the noncarrying side of the flight. End lugs are manufactured from heavy-gauge steel and continuously welded to the flight and center pipe of a screw section. End lugs are designed to provide maximum support with the least obstruction of material flow.

Screw Dia. Part Number
6” to 9” EL9*
12” to 16” EL12*

* KWS Stock Component



Coupling Bolts

Coupling Bolts

Coupling bolts are manufactured from various high-strength carbon steels and 18-8 stainless steels. KWS stocks Grade 5 carbon steel and 18-8 stainless steel coupling bolts. The shank length of a coupling bolt is equal to the measured outside diameter of the center pipe of the screw to provide maximum shear area and strength. It is very important to only use the correct coupling bolt for corresponding screw and pipe size.

Cplg. Dia. Outside Pipe Dia Pipe Size (Sch 40) Bolt Size Part Number Wt. Each (Lbs.)
1” 1-11/16” 1-1/4” 3/8” x 2-1/16” CB1114* 0.13
1-1/2” 2-3/8” 2” 1/2” x 3” CB1122* 0.32
2” 2-7/8” 2-1/2” 5/8” x 3-5/8” CB2212* 0.56
2-7/16” 3-1/2” 3” 5/8” x 4-3/8” CB27163* 0.63
3” 4” 3-1/2” 3/4” x 5” CB3312* 0.91
3” 4-1/2” 4” 3/4” x 5-1/2” CB34* 1.05
3-7/16” 4-1/2” 4” 7/8” x 5-1/2” CB37164* 1.59
3-15/16” 5-9/16” 5” 1-1/8” x 7-1/16” CB315165 3.14
4-7/16” 6-5/8” 6” 1-1/4” x 7-1/2” CB47166 4.62

* KWS Stock Component