TR1660 Threaded Insert MS/NAS - Mini - Inch | 1 MB | ![]() |
Miniature | 4 MB | ![]() |
Threaded Inserts | 28 MB | ![]() |
TR1660 Threaded Insert MS/NAS - Mini - Inch
4140 steel - non-locking - MS/NAS grade
Data Table
Order No. ![]() |
Type ![]() |
d1 class 3B ![]() |
Thread type d1 ![]() |
d2 class 2A ![]() |
Thread type d2 ![]() |
l1 ![]() |
l2 thread length ![]() |
Inst. tool ref. TR1700 ![]() |
Inst. tap drill size +,003 -,001 ![]() |
Inst. c'sink hole size +,010 -,000 ![]() |
Inst. thread tap size class 2B ![]() |
Inst. thread tap min. depth ![]() |
Rem. drill size ![]() |
Rem. drill depth ![]() |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
TR1660.80283 | NL | 2-56 | UNC | 8-32 | UNC | ,120 | ,90 | .0830 | ,134 | ,166 | 8-32 | ,140 | #33 | 1/16 |
TR1660.80284 | NL | 4-40 | UNC | 10-32 | UNF | ,170 | ,125 | .0840 | ,161 | ,194 | 10-32 | ,160 | #29 | 3/32 |
TR1660.80285 | NL | 6-32 | UNC | 12-28 | UNF | ,170 | ,125 | .0850 | ,187 | ,220 | 2-28 | ,160 | #21 | 3/32 |
TR1660.80286 | NL | 8-32 | UNC | 1/4-28* | UNF | ,220 | ,175 | .0860 | ,228 | ,255 | 1/4-28 | ,210 | # 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
NL = Non-Locking type.
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
TR1660 Threaded Insert MS/NAS - Mini - Inch | 1 MB | ![]() |
Miniature | 4 MB | ![]() |
Threaded Inserts | 28 MB | ![]() |
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