Used for acid spot testing to differentiate between carbon steel and molydbate steel
NSN 5950-01-255-7469
NSN 5925-00-642-5253
NSN 5905-01-361-9076
NSN 6130-00-752-2584
NSN 5905-01-197-1803
NSN 6320-01-317-0926
NSN 6240-01-046-9424
NSN 6240-00-251-5235
NSN 6150-01-179-0500
NSN 5998-01-250-3265
NSN 6620-00-470-3219
NSN 5975-00-355-6040