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Unit:inch

Hex Head Tapping Screw and Spring Washer Assemblies-SEMS (Type B Tapping Screw Thread Diameter)

ASME B 18.13 - 2017

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美标ASME B18.13 - 2017 ASME18.13 18.13ASME Hex Head Tapping Screw and Spring Washer Assemblies-SEMS (Type B Tapping Screw Thread Diameter)

Nominal Diameter
d

4#

5#

6#

7#

8#

10#

12#

1/4

5/16

3/8

7/16

1/2

d₁	max
d₁	min
h	min
d_c	max
d_c	min
s	max
s	min
k	max
k	min

0.101	0.112	0.121	0.135	0.144	0.162	0.188	0.217	0.278	0.338	0.397	0.46
0.096	0.107	0.116	0.13	0.138	0.156	0.181	0.209	0.27	0.33	0.388	0.451
0.025	0.031	0.031	0.031	0.04	0.047	0.056	0.062	0.078	0.094	0.109	0.125
0.187	0.214	0.223	0.237	0.262	0.294	0.336	0.443	0.536	0.628	0.717	0.812
0.176	0.201	0.21	0.224	0.248	0.28	0.321	0.427	0.52	0.612	0.7	0.793
0.188	0.188	0.25	0.25	0.25	0.312	0.312	0.375	0.5	0.562	0.625	0.75
0.181	0.181	0.244	0.244	0.244	0.305	0.305	0.367	0.489	0.551	0.61	0.735
0.06	0.07	0.093	0.093	0.11	0.12	0.155	0.19	0.23	0.295	0.348	0.4
0.049	0.058	0.08	0.08	0.096	0.105	0.139	0.172	0.208	0.27	0.321	0.367

①,Refer to ASME B18.6.3 for the size and type of hexagon head tapping screws.

Similar Standards

1		[ISO] ISO 10510 (S1) - 2011	Hexagon Head Tapping Screw With Plain Washers
2		[ISO] ISO 10510 (S1) - 1999	Hexagon Head Tapping Screw With Plain Washers
3		[DIN EN ISO] DIN EN ISO 10510 (S1) - 2011	Hexagon Head Tapping Screw With Plain Washers
4		[ASME/ANSI] ASME/ANSI B 18.13.1M - 2011	Metric Hexagon Head Tapping Screws and Spring Washer Assemblies-SEMS (Screws Having Tapping Screw Thread Diameter)
5		[GB] GB 9074.22 - 1988	Hexagon Head Tapping Screw And Plain Washer Assemblies
6		[JIS] JIS B 1129 - 2004	Hexagon Head Tapping Screws And Plain Washesr Assemblies
7		[GB] GB /T 9074.18 (S1) - 2002	Hexagon Head Tapping Screws And Plain Washer Assemblies
8		[GB] GB /T 9074.18 (S1) - 2017	Hexagon Head Tapping Screws And Plain Washer Assemblies
9		[JIS] JIS B 1129 - 1999	Hexagon head tapping screw and plain washer assemblies
10		[GB] GB 9074.23 - 1988	Hexagon Head Tapping Screw And Plain Washer Assemblies
11		[GB] GB /T 9074.20 - 2004	Cross Recessed Hexagon Head Tapping Screw With Indentation And Washer Assemblies With Plain Washers
12		[GB] GB /T 9074.20 - 1988	Cross Recessed Hexagon Head Tapping Screw With Indentation And Plain Washer Assemblies
13		[GB] GB 9074.21 - 1988	Cross Recessed Hexagon Head Tapping Screw With Indentation And Large Plain Washer Assemblies
14		[NF] NF E 25-523 - 1999	Hexagon Head Tapping Screw And Washer Assemblies With Plain Washers