Print Template - Portland Bolt

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Bolt Diameter	D		F	H	Threads Per Inch	Thread Dimension
	Body Diameter		Width Across Flats	Head Height		Pitch	T^F	T^D	T^R
	Max	Min	Width Across Flats	Head Height		Pitch	Flat At Root	Depth of Thread	Root Diameter
¹⁄₂	Max	Min	0.515	0.482	³⁄₄	¹¹⁄₃₂	6	0.167	0.072	0.064	0.371
⁵⁄₈	0.642	0.605	¹⁵⁄₁₆	²⁷⁄₆₄	5	0.200	0.086	0.077	0.471
³⁄₄	0.768	0.729	1¹⁄₈	¹⁄₂	4¹⁄₂	0.222	0.096	0.085	0.579
⁷⁄₈	0.895	0.852	1⁵⁄₁₆	³⁷⁄₆₄	4	0.250	0.108	0.096	0.683
1	1.022	0.976	1¹⁄₂	⁴³⁄₆₄	3¹⁄₂	0.286	0.123	0.110	0.780
1¹⁄₈	1.149	1.098	1¹¹⁄₁₆	³⁄₄	3¹⁄₄	0.308	0.133	0.119	0.887
1¹⁄₄	1.277	1.223	1⁷⁄₈	²⁷⁄₃₂	3¹⁄₄	0.308	0.133	0.119	1.012
1³⁄₈	1.404	1.346	2¹⁄₁₆	²⁹⁄₃₂	3*	0.333	0.143	0.128	1.119
1¹⁄₂	1.531	1.469	2¹⁄₄	1	3*	0.333	0.143	0.128	1.244
Dimensions per ASME B18.2.1 1996 * ASME only provides dimensional data for lag screws through 1¼” diameter. Lag screws over 1¼” diameter use custom thread pitches.

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