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Dimensions of Slotted Close Tolerance 100-deg Flat Countersunk Head Screws (Machine Screws Only) (ASTM F837 F468)

Achieve precision and reliability with Slotted Close Tolerance 100-deg Flat Countersunk Head Screws (Machine Screws Only) compliant with ASME B 18.6.3 - 2013 standards. Count on their consistent performance for your most demanding applications.

Model:ASME B 18.6.3

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Product Description

Exacting Specifications: ASME B 18.6.3 - 2013 compliant Slotted Close Tolerance 100-deg Flat Countersunk Head Screws (Machine Screws Only) adhere to precise dimensional standards, ensuring consistent performance and compatibility with machinery components. Their close tolerance design minimizes variations, enhancing reliability in critical applications.

Robust Construction: Manufactured to ASTM F837 and F468 specifications, these screws boast a robust construction that withstands high stress and torque loads. Engineered for durability, they excel in demanding industrial environments, offering long-term performance without compromising integrity.

Efficient Assembly: With their slotted drive configuration, these screws facilitate efficient assembly processes, allowing for quick and hassle-free installation using standard tools. This ease of use reduces downtime and labor costs, optimizing productivity in manufacturing and assembly operations.

Wide Application Range: Designed for machine screw applications, these screws find utility across various industries, including automotive, aerospace, and machinery manufacturing. Their versatility and reliability make them indispensable components for securing and fastening critical parts and components.

Thread Size
d

10#

1/4

5/16

3/8

7/16

1/2

9/16

5/8

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

0.1120	0.1380	0.1640	0.1900	0.2500	0.3125	0.3750	0.4375	0.5000	0.5625	0.6250
40	32	32	24	20	18	16	14	13	12	11
0.212	0.262	0.312	0.362	0.477	0.597	0.717	0.837	0.957	1.077	1.197
0.188	0.235	0.282	0.329	0.437	0.55	0.662	0.774	0.887	1.000	1.112
0.049	0.060	0.072	0.083	0.110	0.138	0.165	0.193	0.221	0.249	0.276
0.039	0.048	0.054	0.06	0.075	0.084	0.094	0.094	0.106	0.118	0.133
0.031	0.039	0.045	0.05	0.064	0.072	0.081	0.081	0.091	0.102	0.116
0.024	0.030	0.036	0.042	0.055	0.069	0.083	0.097	0.111	0.125	0.139
0.017	0.022	0.027	0.031	0.042	0.053	0.065	0.076	0.088	0.099	0.111

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.

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