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MS21051L4K Locknut

Product Series: MS
ECCN: EAR99
Schedule: 7318.16.0085

Unit of Measure: EA

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Material

Steel

Surface Treatment

Qq-p-416 federal specification single treatment response

Thread Class

Thread Series

Unjf (fine thread with external controlled root radius)

Thread Size

0.250 inches

Center To Center Distance Between Mounting Holes Along Length: Between 0.310 inches and 0.314 inches
Counterbore Diameter: 0.254 inches nut
Distance From Aperture Center To Mounting Hole Center: Between 0.339 inches and 0.349 inches
Hardness Rating: 49.0 rockwell c
Locking Feature: Prevailing torque all metal design
Mounting Hole Arrangement Style: 2 holes
Mounting Hole Countersink Angle: Between 98.0 degrees and 102.0 degrees
Mounting Hole Diameter: Between 0.098 inches and 0.103 inches
Mounting Provision Location: Opposite nut projection side
Nut Counterbore Depth: 0.062 inches nut
Nut Height: 0.281 inches
Nut Length: 0.993 inches
Nut Mounting Provision: Countersunk holes
Nut Style: Plate
Plate Thickness: 0.055 inches
Plate Width: Between 0.375 inches and 0.414 inches
Tempurature Rating: 450.0 degrees fahrenheit
Thread Direction: Right-hand
Thread Qty Per Inch (tpi): 28
Lubrication: Dry film lubricant