2.5-3 ACME × 3 TPI External (Screw) Thread Specifications

ASME B1.5 Standard Acme (h = 0.500P) per ASME B1.5 — bolt/screw dimensions

Technical Specifications

Parameter	Notation	Value
Major Diameter (Basic)	D	2.5000 in
Pitch Diameter (Basic)	D2	2.3333 in
Minor Diameter (Basic)	D1	2.1667 in
Pitch	P	0.3333 in
Basic Thread Height	h (0.5P)	0.1667 in
Crest Width	Fcn	0.1236 in
Root Width	Frn	0.1184 in

Loading thread calculator...