TRILOBULAR TYPE B THREADFORMING FOR USE IN PLASTIC AND METAL

Technical Data

B Type trilobular thread form

Screw diameter	Pitch	Incomplete thread under head	Thread angle	No. of Phillips recess	c Min	c Max	d Min	d Max	Min Tensile Breaking Torque
M2	0.4	1.6	Max 2 x pitch	60	1.96	2.04	1.88	1.96	4.1 kgf cms
( M2.3 )	0.4	2	Max 2 x pitch	60	2.26	2.34	2.18	2.26	6.1 kgf cms
( M2.6 )	0.4	2.3	Max 2 x pitch	60	2.56	2.64	2.47	2.55	9.9 kgf cms
M3	0.4	2.7	Max 2 x pitch	60	2.95	3.05	2.85	2.95	15 kgf cms
( M3.5 )	0.4	3.2	Max 2 x pitch	60	3.45	3.55	3.34	3.46	25 kgf cms
M4	0.4	3.6	Max 2 x pitch	60	3.95	4.05	3.81	3.91	35 kgf cms
M5	0.4	4	Max 2 x pitch	60	4.94	5.06	4.78	4.9	66 kgf cms
M6	0.4	4.6	Max 2 x pitch	60	5.92	6.08	5.72	5.88	117 kgf cms
M8	0.4	5.3	Max 2 x pitch	60	7.9	8.1	7.65	7.85	283 kgf cms