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Thread Cutting Tapping Screws Type BT
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Thread Cutting Tapping Screws Type BT
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Points of screws shall be tapered and fluted or slotted as illustrated above for the respective types. The flute on Type BT screws shall have an included angle of 90º to 95º and the thread cutting edge located above the axis of screw. Tapered threads shall have unfinished crests, and the flutes or slots shall extend through first full form thread beyond taper except for Type BF screw son which tapered threads may be complete at manufacturer's option and flutes may be one pitch short of first full form thread. Other details of taper and flute design shall be optional with manufacturer, provided the screws meet the specified performance requirements.
The width of flat at crest of thread shall not exceed 0.004 in. for sizes up to and including No. 8, and 0.006 in. for larger sizes.
Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place shall be omitted.
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Results 1 - 16 of 16
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Item #
Description
Nominal Size or Basic Screw Dia.
Threads Per Inch
Max. (D)
Max. (d)
Ref. (P)
Max. (S)
TCTSBT00600XXX
Thread Cutting Tapping Screws Type BT, with 0.0600" Nominal Dia.
No. 0
48
0.060
in
0.036
in
0.031
in
0.042
in
TCTSBT00730XXX
Thread Cutting Tapping Screws Type BT, with 0.0730" Nominal Dia.
No. 1
42
0.075
in
0.049
in
0.044
in
0.048
in
TCTSBT00860XXX
Thread Cutting Tapping Screws Type BT, with 0.0860" Nominal Dia.
No. 2
32
0.088
in
0.064
in
0.058
in
0.062
in
TCTSBT00990XXX
Thread Cutting Tapping Screws Type BT, with 0.0990" Nominal Dia.
No. 3
28
0.101
in
0.075
in
0.068
in
0.071
in
TCTSBT01120XXX
Thread Cutting Tapping Screws Type BT, with 0.1120" Nominal Dia.
No. 4
24
0.114
in
0.086
in
0.079
in
0.083
in
TCTSBT01250XXX
Thread Cutting Tapping Screws Type BT, with 0.1250" Nominal Dia.
No. 5
20
0.130
in
0.094
in
0.087
in
0.100
in
TCTSBT01380XXX
Thread Cutting Tapping Screws Type BT, with 0.1380" Nominal Dia.
No. 6
20
0.139
in
0.104
in
0.095
in
0.100
in
TCTSBT01510XXX
Thread Cutting Tapping Screws Type BT, with 0.1510" Nominal Dia.
No. 7
19
0.154
in
0.115
in
0.105
in
0.105
in
TCTSBT01640XXX
Thread Cutting Tapping Screws Type BT, with 0.1640" Nominal Dia.
No. 8
18
0.166
in
0.122
in
0.112
in
0.111
in
TCTSBT01900XXX
Thread Cutting Tapping Screws Type BT, with 0.1900" Nominal Dia.
No. 10
16
0.189
in
0.141
in
0.130
in
0.125
in
TCTSBT02160XXX
Thread Cutting Tapping Screws Type BT, with 0.2160" Nominal Dia.
No. 12
14
0.215
in
0.164
in
0.152
in
0.143
in
TCTSBT02500XXX
Thread Cutting Tapping Screws Type BT, with 0.2500" Nominal Dia.
1/4
in
14
0.246
in
0.192
in
0.179
in
0.143
in
TCTSBT03125XXX
Thread Cutting Tapping Screws Type BT, with 0.3125" Nominal Dia.
5/16
in
12
0.315
in
0.244
in
0.230
in
0.167
in
TCTSBT03750XXX
Thread Cutting Tapping Screws Type BT, with 0.3750" Nominal Dia.
3/8
in
12
0.38
in
0.309
in
0.293
in
0.167
in
TCTSBT04375XXX
Thread Cutting Tapping Screws Type BT, with 0.4375" Nominal Dia.
7/16
in
10
0.44
in
0.359
in
0.343
in
0.200
in
TCTSBT05000XXX
Thread Cutting Tapping Screws Type BT, with 0.5000" Nominal Dia.
1/2
in
10
0.504
in
0.423
in
0.407
in
0.200
in
Results 1 - 16 of 16
1
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