Dimensions of Metric Hex Lag Screws

Nominal Screw Diameter, D	Body Diameter Ds,		Width Across Flats, S		Width Across Corners, E		Head Height, K		Wrenching Height, K1	Thread Dimensions				Shoulder Diameter, Ds		Shoulder Length, Lsh
	Max	Min	Max	Min	Max	Min	Max	Min	Min	Thread Pitch, P	Flat at root, V	Depth of thread, T	Root Diameter, D1	Max	Min	Max	Min
5	5.48	4.52	8.00	7.64	9.24	8.63	3.9	3.1	2.4	2.3	1.0	0.9	3.2	5.48	4.52	3.5	2.5
6	6.48	5.52	10.00	9.64	11.55	10.89	4.4	3.6	2.8	2.5	1.1	1.0	4.0	6.48	5.52	4.0	3.0
8	8.58	7.42	13.00	12.57	15.01	14.20	5.7	4.9	3.7	2.8	1.2	1.1	5.8	8.58	7.42	5.0	4.0
10	10.58	9.42	16.00	15.57	18.48	17.59	6.9	5.9	4.5	3.6	1.6	1.4	7.2	10.58	9.42	6.0	5.0
12	12.70	11.30	18.00	17.57	20.78	19.85	8.0	7.0	5.2	4.2	1.8	1.6	8.7	12.70	11.30	7.0	6.0
16	16.70	15.30	24.00	23.16	27.71	26.17	10.8	9.3	7.0	5.1	2.2	2.0	12.0	16.70	15.30	9.0	8.0
20	20.84	19.16	30.00	29.16	34.64	32.95	13.4	11.6	8.8	5.6	2.4	2.2	15.6	20.84	19.16	11.0	10.0
24	24.84	23.16	36.00	35.00	41.57	39.55	15.9	14.1	10.5	7.3	3.1	2.8	18.1	24.84	23.16	13.0	12.0

• All dimensions are in millimeters. Reduced body diameter, Dsi, is the blank diameter before rolling. Shoulder is Mandatory when body diameter is reduced.