Model: K874383-011

Splined Clamping Nut

Special Features:

X4340 steel; i.V.D. Aluminum coated; internal threads 2.125 in. Dia. By 16 threads per in., unj thread series, and thread class 3b; heat treated to 140 - 170 ksi tensile strength rc 32 to 38; countersink both ends 2.130 to 2.160 in. Dia. With 90 degree angle; top of nut has 8 slots 0.260 0.280 in. Width equally spaced; top also has 0.280 in. Wide external involute spline with 46 teeth, major dia. Of 2.915 to 2.937 in., and minor dia. Of 2.775 in. ; located at sta 138.4

Properties:

Overall Width

0.920 inches

Overall Diameter

3.275 inches

End Application

Sh-2 (a) helicopter

Part Name Assigned By Controlling Agency

Nut-clamping input drive

Material

Steel

NSN

5310-01-474-1187

Part Number

K874383-011

Description

Nut,clamping,splined

CAGE

84955

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

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Schedule B and Export

Schedule B: 7318160000
SITC: 69421
End Use: Finished metal shapes
NAICS: 332722
USDA: 1

Freight Class: Nuts of iron or steel