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MATERIAL:Alloy Steel - Heat treated

FINISH:450° F Alloy steel, Cadmium Plated per AMS QQ-P-416, Type II, Class 2. + Cetyl alcohol.

MARKING: Parts marked with manufacturer’s symbol (SD).

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.
Unit of Measure

A - MAX

 N/A 0.770 Inch

B - MIN

 N/A 0.725 Inch

C - MIN

 N/A 0.633 Inch

D - MAX

 N/A 0.530 Inch

F ±.016

 N/A 0.141 Inch

G - MAX

 N/A 0.155 Inch

G - MIN

 N/A 0.125 Inch

H ±.015

 N/A 0.250 Inch

R - MAX

 N/A 0.053 Inch

V - REF

 N/A 0.030 Inch

W - MAX

 N/A 0.566 Inch

W - MIN

 N/A 0.556 Inch

Minimum Tensile Strength

 N/A 10550 lb

Approx. Weight

 N/A 0.950 lb/100

Thread Type

 N/A Unified

Configuration 1

 N/A Castellated Hex

Lock

 N/A Crimp Lock

Simplified Material

 N/A Alloy Steel

Temperature

 N/A 450°F - 235°C

Specific Material

 N/A Alloy Steel - Heat treated

Thread

 N/A 0.5000-20 UNJF-3B

Part Family

 N/A THCR 35xx