NSN 5325-00-638-8644
Part Details | SCREW THREAD INSERT
5325-00-638-8644 A cylindrical item which may have wrenching and/or driving facilities and/or shoulders. It is designed to be inserted in a drilled, tapped or a pretapped hole, or molded or pressed into soft material to reduce the size of a tapped hole; to provide threads; to add strength, and/or to prevent stripping. It is one of the following: (1) a one-piece, flanged or unflanged, internally threaded item which may have external threads, and/or serrations around the periphery of the collar, designed to engage a serrated lock ring which is not included with the item; (2) a one-piece precision coiled wire; (3) a two-piece item consisting of an internally threaded cylinder and a mating externally threaded part; or (4) a one-piece internally threaded item whose outside diameter is tapered and/or knurled and/or with fin(s). The internal thread of the item may have a locking feature. Excludes items having a sleeve on on its under portion which can be clinched or crimped. Excludes BUSHING,MACHINE THREAD; NUT,PLAIN,KNURLED; NUT,PLAIN,ROUND; NUT,PLAIN,CLINCH and NUT,SELF-LOCKING,CLINCH. See also NUT,PLAIN,PLATE
Alternate Parts: ML62040, ML620-40, G37240, G372-40, 5325-00-638-8644, 00-638-8644, 5325006388644, 006388644
Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
---|---|---|---|
53 | JAN 01, 1963 | 00-638-8644 | 11444 ( INSERT, SCREW THREAD ) |
REFERENCE DRAWINGS & PICTURES
COIL

Cross Reference | NSN 5325-00-638-8644
Part Number | Cage Code | Manufacturer |
---|---|---|
ML620-40 | 55482 | MOUNT LOK PRODUCTS INC |
G372-40 | 26512 | NORTHROP GRUMMAN SYSTEMS CORPORATIONDIV MISSION SYSTEMS |
Technical Data | NSN 5325-00-638-8644
Characteristic | Specifications |
---|---|
STYLE DESIGNATOR | 4 COIL |
FLANGE THICKNESS | 0.063 INCHES NOMINAL |
LENGTH | 0.688 INCHES NOMINAL |
WIDTH ACROSS FLATS | 0.344 INCHES NOMINAL |
INSERT SIZE | 0.217 IN. MIN,0.221 IN. MAX |
THREAD SERIES DESIGNATOR | UNC |
NOMINAL THREAD SIZE | 0.164 INCHES |
THREAD QUANTITY PER INCH | 32 |
THREAD CLASS | 2B |
SPECIAL FEATURES | 2 RADIAL NOTCHES IN FLANGE PERIPHERY 180 DEG APART MIN,THD COUNTERBORED OPPOSITE FLANGE 0.165 IN. MIN,0.174 IN. MAX DIA BY 0.469 IN. MAX DIA BY 0.469 IN. DEPTH |