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Square Head Bolts [Table 1] (ASTM A307 / A354 / A394)

ASME B 18.2.1 (T1) - 2012

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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

1/4

5/16

3/8

7/16

1/2

5/8

3/4

7/8

1-1/8

1-1/4

1-3/8

1-1/2

d
PP	UNC
d_s	max
	min
s	Nominal Size
	max
	min
e	max
	min
k	Nominal Size
	max
	min
r	max
	min
b	L≤6
	L＞6

0.2500	0.3125	0.3750	0.4375	0.5000	0.6250	0.7500	0.8750	1.0000	1.1250	1.2500	1.3750	1.5000
20	18	16	14	13	11	10	9	8	7	7	6	6
0.260	0.324	0.388	0.452	0.515	0.642	0.768	0.895	1.022	1.149	1.277	1.404	1.531
0.237	0.298	0.360	0.421	0.482	0.605	0.729	0.852	0.976	1.098	1.223	1.345	1.470
3/8	1/2	9/16	5/8	3/4	15/16	1-1/8	1-5/16	1-1/2	1-11/16	1-7/8	2-1/16	2-1/4
0.375	0.500	0.562	0.625	0.750	0.938	1.125	1.312	1.500	1.688	1.875	2.062	2.250
0.362	0.484	0.544	0.603	0.725	0.906	1.088	1.269	1.450	1.631	1.812	1.994	2.175
0.530	0.707	0.795	0.884	1.061	1.326	1.591	1.856	2.121	2.386	2.652	2.917	3.182
0.498	0.665	0.747	0.828	0.995	1.244	1.494	1.742	1.991	2.239	2.489	2.738	2.986
11/64	13/64	1/4	19/64	21/64	27/64	1/2	19/32	21/32	3/4	27/32	29/32	1
0.188	0.220	0.268	0.316	0.348	0.444	0.524	0.620	0.684	0.780	0.876	0.940	1.036
0.156	0.186	0.232	0.278	0.308	0.400	0.476	0.568	0.628	0.720	0.812	0.872	0.964
0.03	0.03	0.03	0.03	0.03	0.06	0.06	0.06	0.09	0.09	0.09	0.09	0.09
0.01	0.01	0.01	0.01	0.01	0.02	0.02	0.02	0.03	0.03	0.03	0.03	0.03
0.750	0.875	1.000	1.125	1.250	1.500	1.750	2.000	2.250	2.500	2.750	3.000	3.250
1.000	1.125	1.250	1.375	1.500	1.750	2.000	2.250	2.500	2.750	3.000	3.250	3.500

Weight of per 1000 steel products(≈kg)

Reference only

Length of Thread b

①,Nominal thread length, b, is a reference dimension intended for calculation purposes only. b equals twice the basic thread diameter +0.25 in. for nominal bolt lengths up to and including 6 in., and twice the basic thread diameter +0.50 in. for nominal lengths over 6 in.
②,All bolts of nominal lengths equal to or shorter than b plus a length equivalent to 2.5 times the thread pitch for sizes up to and including 1 in., and 3.5 times the thread pitch for sizes larger than 1 in. shall be threaded for full length. The unthreaded length under the head and shall not exceed the length of 2.5 times the thread pitch for sizes up to and including 1 in. and 3.5 times the thread pitch for sizes larger than 1 in.

Alternative history

ASME/ANSI B 18.2.1T1 - 1996 ASME B 18.2.1T1 - 2010 ASME B 18.2.1T1 - 2012

Suppliers

Best price if from GlobalFastener.com.

Shanghai Kinsom Precision Hardware Co.,Ltd

Tina Cheung
+86-18114615363
+86-512-57889792

material:carbon steel，copper，Stainless steel 304 ,316,aluminum;Specifications:M2-M20 , 8-32 ,1/4-20 ,10-24 etc;Nominal length:5-200mm;Surface treatment:according to customers' requirements；Zinc plated, Zinc nickel plated, Dacromet, polished, electrophoresis,ect.

NingBo ZhenHai Guisi Zhaoyang Hardware Screw Factory

Mr.Fang
+86-13806639241
+86-574-86574666

Material: carbon steel; Specifications: M5-M24; Length: 20mm~250mm;Surface treatment: nature, black, galvanized, rohs, hot galvanized, dacromet; Grade: 4.8~12.9

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Similar Standards

1	[ASME] ASME B 18.2.1 (T1) - 2010	Square Head Bolts [Table 1] View Suppliers
2	[ASME/ANSI] ASME/ANSI B 18.2.1 (T1) - 1996	Square Bolts [Table 1] View Suppliers
3	[GB] GB /T 8 - 2021	Square Head Bolts - Product Grade C View Suppliers
4	[GB] GB 8 - 1976	Square Head Bolts - Product Grade C (Black) View Suppliers
5	[GB] GB 8 - 1988	Square Head Bolts - Product Grade C View Suppliers
6	[DIN] DIN 21346 - 1989	Square Head Bolts for Shaft Guides
7	[ASME] ASME B 18.2.1 (T4) - 2012	Askew Head Bolts [Table 4] (ASTM A307 / A354 / A394)
8	[ASME] ASME B 18.2.1 (T4) - 2010	Askew Head Bolts [Table 4]
9	[ASME] ASME B 18.2.3.10M - 1996	Metric Square Head Bolts
10	[JIS] JIS B 1182 (T1-1) - 1995	Thin Square Head Bolts [Table 1-1]
11	[JIS] JIS B 1182 (T2) - 1995	Large Square Head Bolts [Table 2]
12	[BS] BS 916 - 1953	Spuare Head Screws with B.S.Threads [Table 1]
13	[BS] BS 916 - 1953	Square Head Bolt with B.S.Threads [Table 1]
14	[GB] GB /T 35 - 2013	Square Head Bolts with Small Head
15	[NF] NF E 25-118 - 1983	Square Head screws - Product grade C
16	[UNI] UNI 5729 - 1965	Large Square Head Bolts and Bolts with Square Nut - Metric Coarse Thread - Finish C
17	[JIS] JIS B 1182 (T1-3) - 1995	Square Head Bolts [Table 1-3]
18	[BS] BS 916 - 1953	Square Bolts Faced Under Head, and Faced Under Head and Turned on Shank with B.S.Threads - Black [Table 2]
19	[BS] BS 916 - 1953	Square Head Screws Faced Under Head with B.S.Threads - Black [Table 2]
20	[JIS] JIS B 1182 (T1-2) - 1995	Square Head Bolts [Table 1-2]
21	[NF] NF E 25-117 - 1983	Square Head Screws - Product Grades A and B
22	[GB] GB /T 35 - 1988	Small Square Head Bolts
23	[NF] NF E 25-116 - 1983	Square Head Screws - Product Grades A and B
24	[JIS] JIS E 1107 - 2008	Fish Plate Bolt Square Head
25	[GOST] GOST 21249 (-2) - 1996	Blunt Bolts for General Purpose - Basic Parameters and Dimensions
26	[GOST] GOST 21249 (-1) - 1996	Blunt Bolts for General Purpose - Basic Parameters and Dimensions
27	[CNS] CNS 4699 - 1982	Square Head Bolts for Wooden Guide Plates
28	[CNS] CNS 3134 - 1981	Square Head Bolts (Finished)
29	[CNS] CNS 3135 - 1981	Square Head Bolts (Semi-Finished)
30	[CNS] CNS 3136 - 1981	Square Head Bolts (Regular)
31	[CNS] CNS 3137 - 1981	Large Square Head Bolts (Regular)