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| TR1661 Threaded Insert MS/NAS - Mini - Inch | 195 kB |  |
| Miniature | 708 kB | |
| Threaded Inserts Steel | 4 MB | |
| Threaded Inserts | 15 MB | |
TR1661 Threaded Insert MS/NAS - Mini - Inch
4140 steel - self-locking - MS/NAS grade, Material: Steel
Data Table
Order No.  |
Type |
d1 class 3B |
Thread type d1 |
d2 class 2A |
Thread type d2 |
l1 |
l2 thread length |
Inst. c'sink hole size +0.010|-0.000 |
Inst. tap drill size +0.003|-0.001 |
Inst. thread tap depth min. |
Inst. thread tap size class 2B |
Inst. tool ref. TR1700 |
Removal drill size |
Removal drill depth |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TR1661.81283 | SL | 2-56 | UNC | 8-32 | UNC | .120 | .90 | .166 | .134 | .140 | 8-32 | .0830 | #33 | 1/16 |
| TR1661.81284 | SL | 4-40 | UNC | 10-32 | UNF | .170 | .125 | .194 | .161 | .160 | 10-32 | .0840 | #29 | 3/32 |
| TR1661.81285 | SL | 6-32 | UNC | 12-28 | UNF | .170 | .125 | .220 | .187 | .160 | 2-28 | .0850 | #21 | 3/32 |
| TR1661.81286 | SL | 8-32 | UNC | 1/4-28* | UNF | .220 | .175 | .255 | .228 | .210 | 1/4-28 | .0860 | # 8 | 1/8 |
Technical & Application
Material
Inserts - 4140 alloy steel (160 KSI Min).
Keys - 302 CRES.
Cadmium plate (QQ-P-416 Type II, Cl. 2). Dry film lubrication on self-locking inserts only.
Technical Notes
All dimensions in inches.
Internal threads: to SAE AS8879.
General tolerances -
+/- 0,010 unless specified.
Tap drill hole tolerances -
0,234 to 0,500 = +0,004/-0,001
0,500 and over = +0,005/-0,001
SL = Self-Locking type, deliberate deformity in thread produces self-affect once installed (see technical diagram).
Tips
Order installation tool separately, as identified by "Inst. Tool ref." in table.
Important Notes
Four locking keys on internal threads 5/16 and over. Two locking keys on internal threads smaller than 5/16.
Installation (Inst.) drill size, counter sink, thread tap and thread depth as specified in table.
Removal (Rem.) drill size and drill depth as specified in table.
Perform to standards: MIL-I-45914A (MS51830)
* Modified minor dia.
CAD & Data Sheets
Product Datasheets
| TR1661 Threaded Insert MS/NAS - Mini - Inch | 195 kB | |
| Miniature | 708 kB | |
| Threaded Inserts Steel | 4 MB | |
| Threaded Inserts | 15 MB | |
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