Knife, Pocket, Hook Blade and Snap Blade MC-1
Engineering Drawing
Knife, Pocket, Hook Blade and Snap Blade, MC-1
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KNIFE, POCKET, HOOK BLADE AND SNAP BLADE, MC-1
MIL-K-25594C
MIL-K-25594D
Scope. This specification covers one type of
emergency usage knife designated MC-1.
REQUIRMENTS.
|
ITEM |
MATERIAL |
ROCKWELL "C" HARDNESS |
|
Snap Blade (finished) |
AISI Steel Alloy 440C |
56 to 61 (from blade point
to within approximately 1/4-inch of the tang
of finished blade.) |
|
Hook Blade (finished) |
AISI Steel Alloy 440C |
56 to 61 (from blade point
to within approximately 1/4-inch of the tang
of finished blade.) |
|
Tang |
AISI Steel Alloy 440C |
40 to 50 (average of three
readings). |
|
Back |
AISI Steel Alloy 440C or
420 |
N/A |
|
Linings |
AISI Steel Alloy 440C or
430 |
N/A |
|
Pivot |
AISI Steel Alloy 440C or
416 |
N/A |
|
Springs *** |
Plain carbon spring steel
with a carbon range of 0.80 to 0.90 percent |
45 to 50 |
|
Release Button |
Approximately 0.230 inch
diameter, 1/2 hard brass or nickel silver
rod |
N/A |
|
Lock lever |
AISI Steel Alloy 420 |
45 to 55 |
|
Safety lock |
0.030-inch thick, 1/2 hard
brass or nickel silver sheet or strip |
N/A |
|
Thumbpiece |
0.050-inch thick, 1/2 hard
brass or nickel silver sheet or strip |
N/A |
|
Handle |
bone (animal), cellulose
acetate sheet or molded phenolformaldehyde
resin impregnated cellulose board.
(finished material shall imitate stag) |
N/A |
|
Clevis |
approximately 0.080-inch
diameter, corrosion-resistant steel (cres),
rod or wire |
N/A |
|
Pins |
0.066-inch diameter, cres,
rod or wire |
N/A |
*** The retaining pin for the fly
spring may be 1/2 hard brass.
# # #
