Retraction: Not sure about Home Depot (may not be stainless), but the part is available from McMaster Carr... online.
McMaster-Carr
http://www.mcmaster.com/
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Helical Inserts
Part Number: 91732A214
Type
Helical Inserts With Tang
Material
18-8 Stainless Steel
Thread Type
Right-Hand Threaded
Internal Thread Size
3/8"-16
Insert Length
9/16"
Rockwell Hardness
C42 - C50
Minimum Tensile Strength
200,000 psi
Maximum Outer Diameter
.472"
Specifications Met
Military Specifications (MIL)
MIL Specification
MIL-122 or MIL-124
Installation Instructions
Drill adequate depth. Tap using screw thread insert tap. Screw insert onto installation tool and install insert 1/4 to 1/2 turn below the work surface of the hole. Remove tang on insert to allow full passage of screw into insert using tang break-off tool.
Suggested Drill Bit Size
X
Repair Kit
91732A930
Repair Kit Contents
Kit includes 10 inserts (0.562" length), one insert tap, one installation tool, and instructions.
Insert Tap
91709A107
Installation Tool
90261A157
Tang Break-Off Tool
92955A115
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