Table 5B

SOCKET CAP, SHOULDER, AND SET SCREWS, HEX AND SPLINE KEYS (INCH SERIES) ASME B18.3-2003
TABLE 5B HEXAGON KEY ENGAGEMENTS FOR SHORT LENGTH SET SCREWS
Nominal Size ( Basic Screw Diameter)		J		L	TH
		J		L	Minimum Key Engagement
		Nominal Hexagon Socket Size		Nominal Screw Lengths	Cup [Note 1] and Flat Points	118 deg Cone and Oval Points	Half Dog Point
0 1 2	0.0600 0.0730 0.0860	... ... ...	0.028 0.035 0.035	0.06 0.09 0.06 0.09 0.06 0.09	0.030 0.040 0.030 0.040 0.030 0.040	0.028 0.040 [Note (2)] 0.029 0.040 [Note (2)] 0.029 0.040	..[Note (3)] 0.028 ..[Note (3)] 0.040 ..[Note (3)] 0.035
3 4 5	0.0990 0.1120 0.1250	... ... 1/16	0.050 0.050 0.062	0.09 0.13 0.09 0.13 0.09 0.13	0.040 0.055 0.045 0.060 0.040 0.060	0.039 0.040 [Note (2)] 0.039 0.045 0.039 0.045	..[Note (3) 0.045 ..[Note (3) 0.045 ..[Note (3) 0.045
6 8 10	0.1380 0.1640 0.1900	1/16 5/64 3/32	0.062 0.078 0.094	0.09 0.13 0.16 0.13 0.16 0.19 0.13 0.19	0.040 0.060 0.070 0.060 0.070 ...[Note (4) 0.060 ...[Note (4)	0.039 0.045 0.065 0.050 0.060 0.065 0.042 0.060	..[Note (3) 0.045 0.065 0.045 0.060 0.065 0.042 0.060
1/4 5/16 3/8	0.2500 0.3125 0.3750	1/8 5/32 3/16	0.125 0.156 0.188	0.19 0.25 0.25 0.31 0.25 0.31 0.38	0.090 ...[Note (4) 0.125 ...[Note (4) 0.110 0.140 ...[Note (4)	0.065 0.110 0.099 0.140 0.090 0.115 0.165	0.055 0.090 0.090 0.105 0.075 0.105 0.155
7/16 1/2 5/8	0.4375 0.500 0.6250	7/32 1/4 5/16	0.219 0.250 0.312	0.38 0.44 0.38 0.44 0.50 0.50	0.160 ...[Note (4) 0.175 0.215 ...[Note (4) 0.205	0.125 0.160 0.130 0.155 0.195 0.145	0.125 0.160 0.130 0.155 0.195 0.145
Cam-Tech Industries, Inc. only manufactures up to 5/8" diameter.

(a) CAUTION: The use of short length set screws listed in this Table can result in failure of the socket, ket, or mating threads during tightening because key engagement and thread length are less than optimum. Therefore, it is strongly recommended that screws of lengths equal to or greater than the lengths specified in columns B and B1 of Table 5A be used wherever possible.

(b) See Table 5A, and the illustrations and notes thereto, for additional dimensions and specifications.

(1) Cup angle may be 118 deg or 130 deg, +5 deg, depending upon screw length and manufacturing process.
(2) Cone point angle for these lengths shall be 90 deg; see column Y in Table 5A.
(3) These sizes are impractical to manufacture because of point configuration and short length.
(4) These screws are covered in Table 5A.

TABLE 5B HEXAGON KEY ENGAGEMENTS FOR SHORT LENGTH SET SCREWS

TABLE 5B HEXAGON KEY ENGAGEMENTS
FOR SHORT LENGTH SET SCREWS