KNURLING
DIFFERENCE
VERY EARLY FIRST ISSUES HAVE KNURLING OF APPROX 50 DEGREES WHERE KNURLING IS FOUND OF VARIOUS DEPTHS FROM LIGHT TO HEAVY AND SPACING GROOVES BETWEEN KNURLES IS DIFFERENT WIDTHS.
LATER SECOND TYPE HAS A KNURLING DEGREE OF APPROX 60 DEGREES AND DEPTH APPEARS MORE COMPACT AND CONSISTANT.
EARLY ON LEFT
LATER ON RIGHT
BROACHING DIFFERENCE
ON EARLY HANDLE THE TANG SLOT IS DRILLED OR MILLED RATHER THAN A SQUARE BROACH.
EARLY ON LEFT
LATER ON RIGHT.
BUTT CAP THREADS
EARLY HANDLES HAVE DEEPER THREADS COMPARED TO LATER ONES
EARLY ON LEFT
LATER ON RIGHT
1987 BROACHING CHANGE
ON LATER KNIVES THE CENTER HOLE IS SMALLER AND THE BROACHING SIZE SAME AS EARLIER MODELS.
KNURLING AND THREAD DEPTH REMAINS THE SAME AS THE LAST VERSION.
