Knife MC-1
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Knife, Pocket, General Purpose ] [ Knife MC-1 ] 

 

Knife, Pocket, Hook Blade and Snap Blade MC-1

CATALOG

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.

 

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