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82° Slotted Flat Countersunk Head Machine Screws [Table 1] (ASTM F837 F468)

Achieve reliable and flush fastening with 82° Slotted Flat Countersunk Head Machine Screws compliant with ASME B 18.6.3 - 2013 standards. Built to last and easy to install, they are ideal for a variety of applications.

Model:ASME B 18.6.3

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Product Description

Reliable Fastening: ASME B 18.6.3 - 2013 compliant 82° Slotted Flat Countersunk Head Machine Screws offer reliable fastening solutions for a wide range of applications. Their flat countersunk head design ensures a flush finish, minimizing protrusions and enhancing safety.

Durable Materials: Crafted from ASTM F837 and F468 compliant materials, these machine screws boast exceptional durability and resistance to corrosion. They maintain their structural integrity even in harsh environments, ensuring long-lasting performance.

Easy Installation: Featuring a slotted drive design, these machine screws are easy to install using a standard screwdriver. This simplifies the assembly process, making them suitable for various DIY and professional applications.

Versatile Application: Suitable for use in machinery, equipment, and furniture assembly, these machine screws offer versatile solutions for fastening tasks. Their reliable performance and durability make them essential components in any toolkit.

Thread Size
d

0000#

000#

00#

d	Nominal Size
PP	UNC
L ^②
d_k	max
d_k	min
k	Ref
n	max
n	min
t	max
t	min

0.0210	0.0340	0.0470	0.0600	0.0730	0.0860	0.0990	0.1120	0.1250	0.1380	0.1640
-	-	-	-	64.0	56.0	48.0	40.0	40.0	32.0	32.0
-	-	-	1/8	1/8	1/8	1/8	3/16	3/16	3/16	1/4
0.040	0.060	0.087	0.112	0.137	0.162	0.187	0.212	0.237	0.262	0.312
0.035	0.055	0.080	0.096	0.120	0.144	0.167	0.191	0.215	0.238	0.285
0.011	0.016	0.028	0.035	0.043	0.051	0.059	0.067	0.075	0.083	0.100
0.008	0.011	0.017	0.023	0.026	0.031	0.035	0.039	0.043	0.048	0.054
0.004	0.007	0.010	0.016	0.019	0.023	0.027	0.031	0.035	0.039	0.045
0.007	0.009	0.014	0.015	0.019	0.023	0.027	0.030	0.034	0.038	0.045
0.003	0.005	0.009	0.010	0.012	0.015	0.017	0.020	0.022	0.024	0.029

Thread Size
d

10#

12#

1/4

5/16

3/8

7/16

1/2

9/16

5/8

3/4

d	Nominal Size
PP	UNC
L ^②
d_k	max
d_k	min
k	Ref
n	max
n	min
t	max
t	min

0.1900	0.2160	0.2500	0.3125	0.3750	0.4375	0.5000	0.5625	0.6250	0.7500
24.0	24.0	20.0	18.0	16.0	14.0	13.0	12.0	11.0	10.0
5/16	3/8	7/16	1/2	9/16	5/8	3/4	-	-	-
0.362	0.412	0.477	0.597	0.717	0.760	0.815	0.932	1.050	1.285
0.333	0.380	0.442	0.556	0.670	0.715	0.765	0.878	0.990	1.215
0.116	0.132	0.153	0.191	0.230	0.223	0.223	0.260	0.298	0.372
0.060	0.067	0.075	0.084	0.094	0.094	0.106	0.118	0.133	0.149
0.050	0.056	0.064	0.072	0.081	0.081	0.091	0.102	0.116	0.131
0.053	0.060	0.070	0.088	0.106	0.103	0.103	0.120	0.137	0.171
0.034	0.039	0.046	0.058	0.070	0.066	0.065	0.077	0.088	0.111

①,Edge of head may be rounded or flat.
②,Screws of these lengths and shorter shall have undercut heads.
③,The diameter of body on machine screws having other than trim heads shall not be less than the Class 2A thread minimum pitch diameter nor greater than the basic major diameter of the thread.
④,Machine Screw Length of Thread
1) Sizes No.5 and smaller.
Screws of nominal lengths equal to three diameters and shorter shall have full-form threads extending to within one pitch (thread) of the
bearing surface of the head, or closer, if practicable. Nominal lengths greater than three diameters, up to and including 1-1/8 in., shall have
full-form threads extending to within two pitches (threads) of the bearing surface of the head, or closer, if practicable. Screws of longer
nominal lengths shall, unless otherwise specified, have a minimum length of full-form thread of 1 in.
2) Sizes No.6 and smaller.
Screws of nominal lengths equal to three diameters and shorter shall have full-form threads extending to within one pitch (thread) of the
bearing surface of the head, or closer, if practicable. Nominal lengths greater than three diameters, up to and including 2 in., shall have
full-form threads extending to within two pitches (threads) of the bearing surface of the head, or closer, if practicable. Screws of longer
nominal lengths shall have a minimum length of full-form thread of 1.5 in. unless otherwise specified.

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