TruThread P ST AC
Thread plug gauge Stub ACME

ASME B1.8
Stub ACME threads are a variation of traditional ACME threads but with a shallower thread profile. They are specifically designed for applications that require the strength and precision of ACME threads but with a thinner wall section or lighter construction.

Stub ACME threads are commonly used in aerospace, aviation, and specialty applications where space constraints and material savings are crucial factors. Their reduced thread depth also decreases cutting forces, making machining easier and extending tool life.