SL-Tr (Trapezoidal threads) | Spiral Flute Tap for Through Hole for Trapezoidal Threads | YAMAWA
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SL-Tr (Trapezoidal threads)
- The SL Tr is a spiral flute tap for through hole trapezoidal threads. The thread angle is 30°. The thread symbol is represented by Tr.
Specification
Tapping Speeds depending on Materials
Segment：1S
|
Size |
Code |
Chamfer |
L (mm) |
ℓ (mm) |
Ds (mm) |
K (mm) |
ℓk (mm) |
No. of flutes |
TYPE |
|
For Trapezoidal threads |
|||||||||
|
Tr 10×2 |
LYT10Q0HEB |
26P |
160 |
70 |
7.8 |
6 |
9 |
3 |
1 |
|
Tr 12×3 |
LYT12S0HEB |
23P |
190 |
95 |
9 |
7 |
10 |
3 |
1 |
|
Tr 12×2 |
LYT12Q0HEB |
30P |
170 |
80 |
9 |
7 |
10 |
3 |
1 |
|
Tr 14×3 |
LYT14S0HEB |
23P |
190 |
95 |
11 |
9 |
12 |
3 |
1 |
|
Tr 16×4 |
LYT16U0HEB |
22.5P |
220 |
120 |
12 |
9 |
12 |
3 |
1 |
|
Tr 16×3 |
LYT16S0HEB |
25P |
200 |
100 |
13 |
10 |
13 |
3 |
1 |
|
Tr 18×4 |
LYT18U0HEB |
22.5P |
220 |
120 |
14 |
11 |
14 |
4 |
1 |
|
Tr 20×4 |
LYT20U0HEB |
24.5P |
230 |
130 |
16 |
12 |
15 |
4 |
1 |
|
Tr 22×5 |
LYT22W0HEB |
22P |
250 |
150 |
18 |
14 |
17 |
4 |
1 |
|
Tr 24×5 |
LYT24W0HEB |
24P |
260 |
160 |
19 |
15 |
18 |
4 |
1 |
|
Tr 25×5 |
LYT25W0HEB |
25P |
270 |
170 |
20 |
15 |
18 |
4 |
1 |
|
Tr 26×5 |
LYT26W0HEB |
27P |
280 |
180 |
21 |
17 |
20 |
4 |
1 |
|
Tr 28×5 |
LYT28W0HEB |
28P |
290 |
190 |
22 |
17 |
20 |
4 |
1 |
|
Tr 30×6 |
LYT30Y0HEB |
25P |
300 |
200 |
24 |
19 |
22 |
4 |
1 |
■The specifications of Tr threads and TM threads
TM screws have become the old JIS 30 degree trapezoidal thread standard, but they have already been abolished. Currently, it is the standard for Tr screws (Metric trapezoidal screws).
● Tr thread specifications.
The Tr thread specifications clearly specify tolerances for major diameters, pitch diameters, and minor diameters as shown in the table below.
● TM thread specifications.
The TM thread specifications specify only basic sizes for major diameters, pitch diameters, and minor diameters as shown in the table below.
“Dimensional tolerances” necessary for actual machining were normally discussed and determined between the client and contractor
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