Click Specification

Heavy Hex Screws [Table 7] (ASTM A193 / A320 / A394)

ASME B 18.2.1 (T7) - 2012

Display drawing:

Download CAD Model

Calculate weight and price. Weight 1000 pcs : kg x $ per kg = $ 1000 pcs

Default density g/cm³

Nominal Length L Tips:seclect Nominal Length L and get Weight Thread length.

Thread Size
d

3/8

1/2

5/8

3/4

7/8

1-1/8

1-1/4

1-3/8

1-1/2

1-5/8

1-3/4

1-7/8

2-1/4

d_s	max
	min
s	max
	min
e	max
	min
k	max
	min
k_w	min
b	Ref.	L≤6
		L＞6

0.375	0.500	0.625	0.75	0.875	1	1.125	1.25	1.375	1.5	1.625	1.75	1.875	2	2.25
0.36	0.482	0.605	0.729	0.852	0.976	1.098	1.223	1.345	1.47	1.591	1.716	1.839	1.964	2.214
0.688	0.875	1.062	1.25	1.438	1.625	1.812	2	2.188	2.375	2.562	2.75	2.938	3.125	3.5
0.669	0.850	1.031	1.212	1.394	1.575	1.756	1.938	2.119	2.3	2.481	2.662	2.844	3.025	3.388
0.794	1.01	1.227	1.443	1.66	1.876	2.093	2.309	2.526	2.742	2.959	3.175	3.392	3.608	4.041
0.763	0.969	1.175	1.383	1.589	1.796	2.002	2.209	2.416	2.622	2.829	3.035	3.242	3.449	3.862
0.243	0.323	0.403	0.483	0.563	0.627	0.718	0.813	0.878	0.974	1.038	1.134	1.198	1.263	1.423
0.226	0.302	0.378	0.455	0.531	0.591	0.658	0.749	0.81	0.902	0.962	1.054	1.114	1.175	1.327
0.160	0.215	0.269	0.324	0.378	0.416	0.461	0.530	0.569	0.640	0.694	0.748	0.802	0.825	0.933
1	1.25	1.5	1.75	2	2.25	2.5	2.75	3	3.25	3.5	3.75	4	4.25	-
1.25	1.5	1.75	2	2.25	2.5	2.75	3	3.25	3.5	3.75	4	4.25	4.5	5

Weight of per 1000 steel products(≈kg)

Reference

Length of Thread b

Reference

Thread Size
d

2-1/2

2-3/4

3-1/4

3-1/2

3-3/4

4-1/4

4-1/2

4-3/4

5-1/4

5-1/2

5-3/4

d_s	max
	min
s	max
	min
e	max
	min
k	max
	min
k_w	min
b	Ref.	L≤6
		L＞6

2.5	2.75	3	3.25	3.5	3.75	4	4.25	4.5	4.75	5	5.25	5.5	5.75	6
2.461	2.711	2.961	3.21	3.461	3.7109	3.9609	4.2228	4.4727	4.7227	4.9726	5.2226	5.4726	5.7225	5.9725
3.875	4.25	4.625	5	5.375	5.75	6.125	6.5	6.875	7.25	7.625	8	8.375	8.75	9.125
3.75	4.112	4.475	4.838	5.2	5.562	5.925	6.288	6.65	7.012	7.375	7.738	8.1	8.462	8.825
4.474	4.907	5.34	5.774	6.207	6.64	7.073	7.506	7.939	8.372	8.805	9.238	9.671	10.104	10.537
4.275	4.688	5.102	5.515	5.928	6.341	6.755	7.168	7.581	7.994	8.408	8.821	9.234	9.647	10.060
1.583	1.744	1.935	2.126	2.256	2.447	2.576	2.768	2.896	3.088	3.217	3.408	3.538	3.729	3.858
1.479	1.632	1.815	1.998	2.12	2.303	2.424	2.608	2.728	2.912	3.033	3.216	3.338	3.521	3.642
1.042	1.151	1.290	1.399	1.484	1.612	1.697	1.826	1.910	2.038	2.123	2.251	2.337	2.465	2.549
-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
5.5	6	6.5	7	7.5	8	8.5	9	9.5	10	10.5	11	11.5	12	12.5

Weight of per 1000 steel products(≈kg)

Reference

Length of Thread b

Reference

①,Thickness of the washer face shall be not less than 0.015 in. nor greater than 0.025 in, for screw sizes 3/4 in. and smaller, and not less than 0.015 in. nor greater than 0.035 in. for screw sizes larger than 3/4 in. The washer face is not applicable to hex flange or lobed head screws. The washer face diameter shall be equal to the maximum width across flats with a tolerance of -10%. Measurement of the washer face diameter shall be taken 0.004 in. below the bearing surface plane toward the head of the screw.
②,b is a reference dimension tntended for calculation purposes only. When screw length L ≤ 6 in，b=2d+0.25；when L＞6 in，b=2d+0.5 。

Alternative history

ASME/ANSI B 18.2.1T5 - 1981 ASME B 18.2.1T6 - 1996 ASME B 18.2.1T7 - 2010 ASME B 18.2.1T7 - 2012

Send Inquiry

Similar Standards

1	[ASME] ASME B 18.2.1 (T3) - 2010	Heavy Hex Bolts [Table 3] View Suppliers
2	[DIN EN] DIN EN 14399-4 (Bolt) - 2015	High-strength Structural Bolting Assemblies for Preloading - Part 4: System HV - Hexagon bolts View Suppliers
3	[DIN] DIN 6914 - 1989	High-Strength Hexagon Bolts with Large Widths Across Flats for Structural Bolting View Suppliers
4	[ASME] ASME B 18.2.6M - 2012	Metric Heavy Hex Structural Bolts (ASTM A 325M / ASTM A 490M) View Suppliers
5	[ASME] ASME B 18.2.6 - 2006	Heavy Hex Structural Bolts (ASTM A 325 / ASTM A 490) View Suppliers
6	[ASME] ASME B 18.2.6 - 2019	Heavy Hex Structural Bolts (ASTM F3125 / F3125M) View Suppliers
7	[ASME] ASME B 18.2.1 (T3) - 2012	Heavy Hex Bolts [Table 3] (ASTM A307 / A394) View Suppliers
8	[ASME] ASME B 18.2.6 - 2010	Heavy Hex Structural Bolts (ASTM A 325 / ASTM A 490) View Suppliers
9	[UNI] UNI 5712 - 1975	High-strength Large Hexagon Bolts for Structural Engineering - ISO Metric Coarse Thread View Suppliers
10	[ASTM] ASTM A325M - 2009	Standard Specification for structural bolts,steel,heat treated 830MPa minmum tensile strength(metric) View Suppliers
11	[DIN] DIN 7990 - 2017	Hexagon Head Bolts with Hexagon Nut for Steel Structures
12	[ANSI] ANSI B 18.2.3.6M (J1199,F568,A962,A320) - 1979 (R2006)	Metric Heavy Hex Bolts
13	[IFI] IFI 149 - 2000	Large Size Heavy Hex Screws
14	[ASME] ASME B 18.2.1 (T7) - 2010	Heavy Hex Screws [Table 7]
15	[ASME/ANSI] ASME/ANSI B 18.2.3.7M - 2006	Metric Heavy Hex Structural Bolts
16	[EN] EN 14399-4 (Bolt) - 2015	High-Strength Structural Bolting Assemblies for Preloading - Part 4: System HV - Hexagon Bolts
17	[DIN] DIN 7990 - 2008	Hexagon Head Bolts with Hexagon Nut for Steel Structures
18	[ASME/ANSI] ASME/ANSI B 18.2.3.3M - 2001	Metric Heavy Hexagon Bolts
19	[DIN] DIN 7990 - 1989	Hexagon Head Bolts with Hexagon Nut for Steel Structures
20	[ISO] ISO 7411 - 1984	Hexagon Bolts for High-Strength Structural Bolting with Large Width Across Flats (Thread Lengths According to ISO 888) - Product Grade C - Property Classes 8.8 and 10.9
21	[ISO] ISO 7412 - 1984	Hexagon Bolts for High-Strength Structural Bolting with Large Width Across Flats (Short Thread Length - Product Grade C—Property Classes 8.8 and 10.9
22	[EN] EN 14399-3 (Bolt) - 2015	High-strength Structural Bolting Assemblies for Preloading - Part 3: System HR — Hexagon Bolt
23	[EN] EN 14399-4 (Bolt) - 2005	High-Strength Structural Bolting Assemblies for Preloading - Part 4: System HV - Hexagon Bolts
24	[GB] GB /T 18230.2 - 2000	Hexagon Bolts for High-strength Structural Bolting with Large Width Across Flats (Short Thread Length) - Product Grade C - Property Classes 8.8 and 10.9
25	[GB] GB /T 9125 - 2010	Hex Bolt for Pipe Flange Connection
26	[BS] BS 1769 - 1951	Unified Hexagon Head Forged Bolts
27	[GB] GB /T 9125 - 2003	Hex Bolt for Pipe Flange Connection
28	[GB] GB /T 18230.1 - 2000	Hexagon Bolts for Structural Bolting with Large Width Across FLats(Thread Lengths accroding to GB/T 3106) - Product Grade C - Property Classes 8.8 and 10.9
29	[GB] GB /T 16939 - 2016	High Strength Bolts for Joints of Space Grid Structures
30	[GB] GB /T 32076.4 - 2015	High-Strength Structural Bolting Assemblies for Preloading - Part 4:System HV-Hexagon Bolt with Large Width Across Flats
31	[GB] GB /T 9125.1 - 2020	Hex Bolt for Pipe Flange Connection - PN Designated
32	[GB] GB /T 9125.2 - 2020	Hex Bolt for Pipe Flange Connection - Class Designated
33	[GB] GB /T 1228 - 1991	High Strength Bolts with Large Hexagon Head for Steel Structures
34	[NF] NF E 25-801-4 - 2005	High Strength Bolts with Large Hexagon Head for Steel Structure
35	[NF] NF E 25-801-3 - 2005	High Strength Bolts with Large Hexagon Head for Steel Structure
36	[JIS] JIS B 1186 - 1995	High Strength Hexagon Bolts for Friction Grip Joints
37	[GB] GB /T 1231 (bolt) - 2024	High Strength Bolts with Large Hexagon Head Assemblies for Steel Structures
38	[GB] GB /T 16939 - 1997	High Strength Bolts for Joints of Space Grid Structures
39	[GB] GB /T 1228 - 2006	High Strength Bolts with Large Hexagon Head for Steel Structures
40	[BS] BS 4395-1 - 1969	Metric High Strength Large Hexagon Head Bolts
41	[JIS] JIS B 1186 - 2013	High Strength Hexagon Bolts for Friction Grip Joints
42	[GB] GB /T 32076.3 - 2015	High-Strength Structural Bolting Assemblies for Preloading-Part 3:System HR-Hexagon Bolt with Large Width Across Flats
43	[GB] GB /T 32076.7 - 2015	High-strength Structural Bolting Assemblies for Preloading-Part 7:system HV-Hexagon Bolt with Large Width Across Flats And Nut Assemblies M39～m64
44	[GOST] GOST R 52644 - 2006	Hexagon Bolts for High-Strength Structural Bolting with Large Width Across Flats - Product Grade C - Property Classes 8.8 and 10.9
45	[GOST] GOST 32484.3 - 2014	High-strength Structural Bolting Assemblies for Preloading-system HR-Hex Bolt
46	[AS] AS /NZS 1252.1 - 2016	High-Strength Steel Bolts
47	[AS] AS /NZS 1252 - 1996	High-Strength Steel Bolts
48	[CNS] CNS 3124 - 1987	Hexagon Head Bolts for Steel Structures
49	[CNS] CNS 4366 - 1987	Hexagon Bolts with Large Widths Across Flats for Steel Structures
50	[CNS] CNS 11328 - 1985	High Strength Friction Grip Hexagon Bolts
51	[IS] IS 3757 - 1985	High Strength Structural Bolts
52	[ASTM] ASTM A 490M - 2014	High-strength steel bolts, classes 10.9 and 10.9.3, for structural steel joints (Metric)