1. Material & Standard of Titanium Square Head Bolt

• Material: titanium Grade 1, 2, 3, 5, 7, 9, 12, 16.
• Standards: ASTM B381, ASTM F468, ASME B18.2.1
• Thread: cut thread or rolled thread; ASME B1.1

2. Technical Drawing of Titanium Square Head Bolt

3. Dimensions & Weights of Titanium Square Head Bolt

Nominal	E		F			G
Size	max.	min.	basic	max.	min.	max.	min.
1/4"	0.260	0.237	3/8	0.375	0.362	0.530	0.498
5/16"	0.324	0.298	1/2	0.500	0.484	0.707	0.665
3/8"	0.388	0.360	9/16	0.562	0.544	0.795	0.747
7/16"	0.452	0.421	5/8	0.625	0.603	0.884	0.828
1/2"	0.515	0.482	3/4	0.750	0.725	1.061	0.995
5/8"	0.642	0.605	15/16	0.938	0.906	1.326	1.244
3/4"	0.768	0.729	1-1/8	1.125	1.088	1.591	1.494
7/8"	0.895	0.852	1-5/16	1.312	1.269	1.856	1.742
1"	1.022	0.976	1-1/2	1.500	1.450	2.121	1.991
1-1/8"	1.149	1.098	1-11/16	1.688	1.631	2.386	2.239
1-1/4"	1.277	1.223	1-7/8	1.875	1.812	2.652	2.489
1-3/8"	1.404	1.345	2-1/16	2.062	1.994	2.917	2.738
1-1/2"	1.531	1.470	2-1/4	2.250	2.175	3.182	2.986

*Unit: inch; E: full-size body diameter; F: width across flats; G: width across corners.

Nominal	H			R		LT
Size	basic	max.	min.	max.	min.	≤ 6"	> 6"
1/4"	11/64	0.188	0.156	0.03	0.01	0.750	1.000
5/16"	13/64	0.220	0.186	0.03	0.01	0.875	1.125
3/8"	1/4	0.268	0.232	0.03	0.01	1.000	1.250
7/16"	19/64	0.316	0.278	0.03	0.01	1.125	1.375
1/2"	21/64	0.348	0.308	0.03	0.01	1.250	1.500
5/8"	27/64	0.444	0.400	0.06	0.02	1.500	1.750
3/4"	1/2	0.524	0.476	0.06	0.02	1.750	2.000
7/8"	19/32	0.620	0.568	0.06	0.02	2.000	2.250
1"	21/32	0.684	0.628	0.09	0.03	2.250	2.500
1-1/8"	3/4	0.780	0.720	0.09	0.03	2.500	2.750
1-1/4"	27/32	0.876	0.812	0.09	0.03	2.750	3.000
1-3/8"	29/32	0.940	0.872	0.09	0.03	3.000	3.250
1-1/2"	1	1.036	0.964	0.09	0.03	3.250	3.500

*Unit: inch; H: head height; R: radius of fillet; L_T: nominal thread length for bolt lengths.

Weight calculation formula for titanium square bolt:  Wt = ( F * F * H + π * E * E / 4 * L ) * ρ * 1.64 * 10^-5;  ρ = 4510 kg/m³.