Used for acid spot testing to differentiate between carbon steel and molydbate steel
NSN 6105-01-031-0854
NSN 6150-01-171-1118
NSN 5930-00-429-9376
NSN 6685-01-204-6367
NSN 2925-01-032-3814
NSN 6240-01-590-7275
NSN 5950-00-973-5001
NSN 6645-00-825-5677
NSN 5915-01-082-6316
NSN 6130-00-149-8490
NSN 6645-00-478-6509
NSN 5998-01-472-2520