A pair of new replacement Serrated Vise Jaws for the Rock Island #577 6 inch vise.   Check dimensions below for matching your jaws to this pair, or contact me for exact specs. 

A-2 Tool Steel is Heat Treated to 54-56 Rockwell. The colorful pattern on the serrated jaws happens during the Heat Treating process when nitrogen is used. After Heat Treating, these jaws are surface ground flat and then squared.

 The slot is 7/8 wide and 1/4 deep and the step is located a little more then 5/16 up from the bottom of the jaw.

(6x) 5/16:18  Short Head Cap Screws supplied.

These are Premium Handcrafted Jaws. Many imports use powdered metal that gets injected into a mold to save time. I have seen many break at the screw holes. My jaws should be the last you ever buy.

Made in the USA.

Questions?  Contact Kevin:  mountainproduct@gmail.com                                 

Length:           6.04                                                           

Width:             1-3/4          

Thickness:       3/4

Boss width:     7/8

Boss depth:     1/4          

Distance between screws:  2" from center to outside hole.              

Screw Size ---  5/16:18