ASME B 18.6.3 (T20) - 2013 Combination Slotted-Pan Head Screws (ASTM F837, F468)

Unit:

Thread Size
d

d
PP
d_k	max
	min
k	max
	min
n	max
	min
t	max
	min
M	Type I
	Type IA
	Type III
P	Type I	Max.
		Min.
	Type IA	Max.
		Min.
	Type III	Max.
		Min.
Drive Size	Type I
	Type IA
	Type III
R	Min.

0.0600	0.0730	0.0860
80	64	56
0.116	0.142	0.167
0.104	0.130	0.155
0.044	0.053	0.062
0.036	0.044	0.053
0.023	0.026	0.031
0.016	0.019	0.023
0.022	0.027	0.031
0.013	0.016	0.020
0.060	0.067	0.097
0.060	0.067	0.097
/	/	0.050
0.032	0.040	0.052
0.014	0.022	0.034
0.033	0.040	0.053
0.017	0.024	0.037
/	/	0.033
/	/	0.028
0	0	1
0	0	1
/	/	00
0.005	0.005	0.010

①,Carbon Steel - Unhardened. Unless otherwise specified, machine screw shall be non-heat-treated low carbon steel, such as 1006 through 1022, with a hardness of Rochwell B69-100
②,Carbon Steel - Hardened. When hardened machine screws are specified, they shall be made form low or medium carbon steel, such as 1018 through 1038, with or without boron, through-hardened to Rockwell C25-38

ASME B 18.6.3 (T20) - 2013 Combination Slotted-Pan Head Screws (ASTM F837, F468)

ASME/ANSI B 18.6.3 (T20) - 2010

YJT 4016

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