Military Standard MS21044N7 Steel Nut, Self-Locking, Hexagon

The MS21044N7 is as the name describes—a self-locking nut composed of steel. For more information, see the specs below.

*Unless otherwise noted, values are in inches

• Material:Steel (Composition 1213 or 1035 or 1018 or 1015 or 1010 or 1009 or 1008 or 1006 or 11L37 or 12L14)
• Material Document and Classification: QQ-A-200/2, T6 or QQ-A-225sol;5, T4 or QQ-A-225sol;6, T6 QQ-A-200sol;11, T6
• Surface Treatment: Cadmium and chromate
• Surface Treatment Document and Classification: QQ-P-416, Type 2, Class 3
• Thread Class: 3B
• Thread Direction: Right-hand
• Locking Feature: Prevailing torque with nonmetallic insert
• Lubrication: Soluble lubricant
• Nut Style: Hexagon
• Nominal Nut Height Range (cm):.435 to .469
• Width Across Flats: .679 to .690
• Nominal Temperature Range (°F): 250
• Thread Series: UNJF
• Thread Quantity (per inch): 20
• Nominal Thread Size: .438
• Nominal Countersink Angle: 88 degrees
• Bearing Surface Type: Chamfered or washer faced
• Special Features: Weapon system essential