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Dimensions of Slotted 100-deg Flat Countersunk Head Screws [Table 3] (ASTM F837 F468)

Trust in the standardized dimensions and quality of Slotted 100-degree Flat Countersunk Head Screws, designed to meet ASTM F837 F468 and ASME B 18.6.3 - 2013 standards. Whether for machinery or construction applications, these screws provide secure and stable connections for your projects.

Model:ASME B 18.6.3

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Product Description

Standardized Screws: Slotted 100-degree Flat Countersunk Head Screws, with dimensions specified in [Table 3] and conforming to ASTM F837 F468 and ASME B 18.6.3 - 2013, provide standardized fastening solutions suitable for various applications, including machinery, construction, and electronics.

Dimensional Accuracy: These screws are manufactured to precise dimensional standards outlined in [Table 3] and ASTM F837 F468, ensuring compatibility and ease of use in different fastening applications.

Compliance with Standards: These screws comply with the specifications outlined in ASME B 18.6.3 - 2013, ensuring consistent quality and performance standards for reliable fastening in diverse industries.

Thread Size
d

0000#

000#

00#

10#

1/4

5/16

3/8

d	Nominal Size
PP	UNC
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	0.1380	0.1640	0.1900	0.2500	0.3125	0.3750
-	-	-	-	64	56	48	40	32	32	24	20	18	16
0.04	0.06	0.087	0.112	0.137	0.162	0.187	0.212	0.262	0.312	0.362	0.477	0.597	0.717
0.035	0.055	0.08	0.095	0.118	0.142	0.165	0.188	0.235	0.282	0.329	0.437	0.55	0.662
0.009	0.014	0.02	0.026	0.031	0.037	0.043	0.049	0.06	0.072	0.083	0.11	0.138	0.165
0.008	0.012	0.017	0.023	0.026	0.031	0.035	0.039	0.048	0.054	0.06	0.075	0.084	0.094
0.005	0.008	0.01	0.016	0.019	0.023	0.027	0.031	0.039	0.045	0.05	0.064	0.072	0.081
0.008	0.011	0.013	0.013	0.016	0.019	0.022	0.024	0.03	0.036	0.042	0.055	0.069	0.083
0.004	0.007	0.008	0.008	0.01	0.012	0.014	0.017	0.022	0.027	0.031	0.042	0.053	0.065

①,Edge of head may be rounded or flat.
②,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.
③,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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