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Metric Type III square-recessed oval countersunk head tapping screws

ASME B 18.6.5M (T15) - 2000 (R2010)

Display drawing:

Screw Thread
d

ST2.9

ST3.5

ST4.2

ST4.8

ST5.5

ST6.3

ST8

ST9.5

P	Pitch
d_k	max
d_k	min
k	max
f	max
r	max
r	min
s	Ref.
t	Ref.
b	min
Socket No.
Type of Thread and Point

1	1.3	1.4	1.6	1.8	1.8	2.1	2.1
5.5	7.3	8.4	9.3	10.3	11.3	15.8	18.3
5.2	6.9	8	8.9	9.9	10.9	15.4	17.8
1.7	2.3	2.6	2.8	3	3.1	4.6	5.2
0.7	0.8	1	1.2	1.3	1.4	2	2.3
1.2	1.4	1.6	2	2.2	2.4	3.2	4
0.6	0.7	0.8	1	1.1	1.2	1.6	2
1.78	2.31	2.84	2.84	3.38	3.38	4.85	4.85
1.68	2.69	3.23	3.23	4.01	4.01	4.93	4.93
17	21	25	29	33	38	38	38
0	1R	2R	2R	3R	3R	4R	4R
AB,B,BF,BT	AB,B,BF,BT	AB,B,BF,BT	AB,B,BF,BT	AB,B,BF,BT	AB,B,BF,BT	AB,B,BF,BT	AB,B,BF,BT

Screw Thread
d

M2.5

M3.5

M10

P	Pitch
d_k	max
d_k	min
k	max
f	max
r	max
r	min
s	Ref.
t	Ref.
b	min
Socket No.
Type of Thread and Point

0.45	0.5	0.6	0.7	0.8	1	1.25	1.5
4.7	5.5	7.3	8.4	9.3	11.3	15.8	18.3
4.4	5.2	6.9	8	8.9	10.9	15.4	17.8
1.5	1.7	2.3	2.7	2.7	3.3	4.6	5
0.6	0.7	0.8	1	1.2	1.4	2	2.3
1	1.2	1.4	1.6	2	2.4	3.2	4
0.5	0.6	0.7	0.8	1	1.2	1.6	2
1.78	1.78	2.31	2.84	2.84	3.38	4.85	4.85
1.68	1.68	2.69	3.23	3.23	4.01	4.93	4.93
15	18	21	24	30	38	38	38
0	0	1R	2R	2R	3R	4R	4R
D,F,T	D,F,T	D,F,T	D,F,T	D,F,T	D,F,T	D,F,T	D,F,T

①,R = Regular

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