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  • Nut – Reduced Hex Light Weight Castellated , Self Locking 450° / 800°F
MATERIAL:A 286 Non magnetic heat and corrosion resistant steel.

FINISH:
  • 800° F THCR 54 - A 286 Silver Plate, AMS 2410.
  • 450° F THCR 54 M - A 286 Passivated, Dry Film Lubricant.
  • 450° F THCR 54 CD - Cadmium plate per AMS-QQ-P-416 Type II, Class 2 + solid film lubricant.
MARKING: Parts marked with manufacturer’s symbol (SD), plus letter ‘’C’’.

PERFORMANCE:NASM-25027 Except locking torque values applicable for 5 cycles and tensile strength per table.

THREADS:In accordance with AS 8879 before lubrication.

APPLICATION: These nuts have been designed to replace AN320 castellated nuts on critical aircraft control linkage. This design provides an increase in tensile strength while reducing weight substantially over similar parts.

Contact Howmet for the diameter/type in manufacturing.
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A - MAX

B - MIN

C - MIN

D - MAX

F ±.016

G - MAX

G - MIN

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N/A 1.130 Inch N/A 1.095 Inch N/A 0.987 Inch N/A 0.785 Inch N/A 0.250 Inch N/A 0.186 Inch N/A 0.156 Inch N/A 0.7500-16 UNJF-3B N/A THCR 5xx
N/A 1.130 Inch N/A 1.095 Inch N/A 0.987 Inch N/A 0.785 Inch N/A 0.250 Inch N/A 0.186 Inch N/A 0.156 Inch N/A 0.7500-16 UNJF-3B N/A THCR 5xx
N/A 1.345 Inch N/A 1.300 Inch N/A 1.130 Inch N/A 0.910 Inch N/A 0.313 Inch N/A 0.186 Inch N/A 0.156 Inch N/A 0.8750-14 UNJF-3B N/A THCR 5xx
N/A 1.345 Inch N/A 1.300 Inch N/A 1.130 Inch N/A 0.910 Inch N/A 0.313 Inch N/A 0.186 Inch N/A 0.156 Inch N/A 0.8750-14 UNJF-3B N/A THCR 5xx
N/A 1.345 Inch N/A 1.300 Inch N/A 1.130 Inch N/A 0.910 Inch N/A 0.313 Inch N/A 0.186 Inch N/A 0.156 Inch N/A 0.8750-14 UNJF-3B N/A THCR 5xx
N/A 1.545 Inch N/A 1.500 Inch N/A 1.272 Inch N/A 1.035 Inch N/A 0.375 Inch N/A 0.186 Inch N/A 0.156 Inch N/A 1.0000-12 UNJF-3B N/A THCR 5xx
N/A 1.545 Inch N/A 1.500 Inch N/A 1.272 Inch N/A 1.035 Inch N/A 0.375 Inch N/A 0.186 Inch N/A 0.156 Inch N/A 1.0000-12 UNJF-3B N/A THCR 5xx
N/A 1.545 Inch N/A 1.500 Inch N/A 1.272 Inch N/A 1.035 Inch N/A 0.375 Inch N/A 0.186 Inch N/A 0.156 Inch N/A 1.0000-12 UNJF-3B N/A THCR 5xx
N/A 1.745 Inch N/A 1.700 Inch N/A 1.414 Inch N/A 1.160 Inch N/A 0.406 Inch N/A 0.186 Inch N/A 0.156 Inch N/A 1.1250-12 UNJF-3B N/A THCR 5xx
N/A 1.745 Inch N/A 1.700 Inch N/A 1.414 Inch N/A 1.160 Inch N/A 0.406 Inch N/A 0.186 Inch N/A 0.156 Inch N/A 1.1250-12 UNJF-3B N/A THCR 5xx
N/A 1.745 Inch N/A 1.700 Inch N/A 1.414 Inch N/A 1.160 Inch N/A 0.406 Inch N/A 0.186 Inch N/A 0.156 Inch N/A 1.1250-12 UNJF-3B N/A THCR 5xx
N/A 1.915 Inch N/A 1.875 Inch N/A 1.556 Inch N/A 1.285 Inch N/A 0.469 Inch N/A 0.186 Inch N/A 0.156 Inch N/A 1.2500-12 UNJF-3B N/A THCR 5xx
N/A 1.915 Inch N/A 1.875 Inch N/A 1.556 Inch N/A 1.285 Inch N/A 0.469 Inch N/A 0.186 Inch N/A 0.156 Inch N/A 1.2500-12 UNJF-3B N/A THCR 5xx
N/A 1.915 Inch N/A 1.875 Inch N/A 1.556 Inch N/A 1.285 Inch N/A 0.469 Inch N/A 0.186 Inch N/A 0.156 Inch N/A 1.2500-12 UNJF-3B N/A THCR 5xx
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