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MATERIAL:A 286 Non magnetic heat and corrosion resistant steel.

FINISH:800°F - A 286 Silver Plate, AMS 2410.

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.
Unit of Measure

A - MAX

N/A 0.850 Inch

B - MIN

N/A 0.815 Inch

C - MIN

N/A 0.775 Inch

D - MAX

N/A 0.592 Inch

F ±.016

N/A 0.188 Inch

G - MAX

N/A 0.186 Inch

G - MIN

N/A 0.156 Inch

H ±.015

N/A 0.313 Inch

R - MAX

N/A 0.062 Inch

V - REF

N/A 0.045 Inch

W - MAX

N/A 0.692 Inch

W - MIN

N/A 0.680 Inch

Minimum Tensile Strength

N/A 13400 lb

Approx. Weight

N/A 1.600 lb/100

Thread Type

N/A Unified

Configuration 1

N/A Castellated Hex

Lock

N/A Crimp Lock

Simplified Material

N/A CRES

Temperature

N/A 800°F - 425°C

Thread

N/A 0.5625-18 UNJF-3B

Part Family

N/A THCR 5xx