Heavy Hex Bolts Screws ASTM A307 Gr.A

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Heavy Hex Bolts/Screws ASTM A 307 Gr. A

The Bolt will generally conform to ANSI/ASME B 18.2.1 Heavy Hex Bolts.

Thread will conform to Class 2 A of ANSI B1.1 Coarse Series

Material : Low Carbon Steel.

Bolt length equal to or shorter than those listed in column / LFT will be fully threaded.

All dimension are in inches.

Nominal Thread Size-D	TPI	F Max.	G Max.	B Max.	H Nom.11/32	R Min.	Length of Thread LT		L.F.T	Length Range
Nominal Thread Size-D	UNC	F Max.	G Max.	B Max.	H Nom.11/32	R Min.	L<6"	L>6"	L.F.T	Length Range
3/8''	16	0.562	0.650	0.388	1/4"	0.01	1.00	1.25	1.2500	1/2"-4"
1/2''	13	0.750	0.866	0.515	11/34"	0.01	1.25	1.50	1.5000	3/4"-8"
5/8	11	0.938	1.083	0.642	27/64"	0.02	1.50	1.75	1.750	1"-8"
3/4	10	10125	1.299	0.786	1/2"	0.02	2.75	2.00	2.000	1-1/2"-8"
7/8	9	1.312	1.516	0.895	37/64"	0.02	2.00	2.25	2.250	1-1/2"-8"
1"	8	1.500	1.732	1.022	43/64"	0.03	2.25	2.50	2.500	1-1/2"-8"
1-1/8"	8UN	1.688	1.949	1.149	3/4"	0.03	2.50	2.75	2.750	2"-8"
1-1/4"	8UN	1.875	2.165	1.277	27/32"	0.03	2.75	3.00	3.000	2"-8"
1-3/8"	8UN	2.062	2.382	1.404	29/32"	0.03	3.00	3.25	3.250	2-1/2"-8"
1-1/2"	8UN	2.250	2.598	1.531	1"	0.02	3.25	3.50	3.500	2-1/2"-8"

Note:

The Bolt will generally conform to ANSI/ASME B 18.2.1 Heavy Hex Bolts.

Thread will conform to Class 2 A of ANSI B1.1 Coarse Series

Material : Low Carbon Steel.

Bolt length equal to or shorter than those listed in column / LFT will be fully threaded.

All dimension are in inches.