Military Standard MS21083N04 Steel Nut, Self-Locking Hexagon

*Unless otherwise noted, values are in inches

Material (nut): Steel nut
Material (locking insert): Plastic (polyamide)
Surface Treatment (excluding insert): Cadmium and chromate
Style: Hexagon
Minimum Countersink Angle (nut): 88 degrees
Bearing Surface Type: Chamfered or washer faced
Bearing Surface Finish (microinches): 125
Lubrication: Soluble lubricant
Maximum Hardness Rating (Rockwell): 35
Maximum Height: .125
Width Across Flats Range: .243 to .251
Maximum Temperature Rating (°F): 250
Nominal Thread Size: .112
Thread Class: 3B
Thread Direction: Right-hand
Thread Quantity (per inch): 40
Thread Series: UNJC