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Part Number

Part Number:
NSN:
NIIN:
Item Name:
INSERT , SCREW THREAD

Definition:

A CYLINDRICAL ITEM WHICH MAY HAVE WRENCHING AND/OR DRIVING FACILITIES AND/OR SHOULDERS. IT IS DESIGNED TO BE INSERTED IN A DRILLED 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 ITS UNDERPORTION 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.

CAGE Information

Code Company
29372 ALCOA GLOBAL FASTENERS INC. DBA ALCO

Federal Supply Class

Title

FASTENING DEVICES

Inclusions:

INCLUDES EYELETS; GROMMETS; AIRCRAFT COWLING FASTENERS; TEXTILE FASTENERS; RETAINING RINGS; THREADED INSERTS.

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
ABRY LENGTH 0.792 INCHES MINIMUM AND 0.812 INCHES MAXIMUM
THSD THREAD SERIES DESIGNATOR UNJF
ABKK FLANGE DIAMETER 1.005 INCHES MINIMUM AND 1.007 INCHES MAXIMUM
MATT MATERIAL STEEL COMP 303 OVERALL
CQJX NOMINAL THREAD SIZE 0.500 INCHES
FEAT SPECIAL FEATURES HAS 4 KEYS
STYL STYLE DESIGNATOR FLANGE
ABKU FLANGE THICKNESS 0.352 INCHES MINIMUM AND 0.362 INCHES MAXIMUM
AAJD THREAD CLASS 3B
BZGJ INSERT SIZE 0.750-16 UNJF-3A
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MDCL MATERIAL DOCUMENT AND CLASSIFICATION AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CMLP THREAD QUANTITY PER INCH 20
SFTT SURFACE TREATMENT PASSIVATE OVERALL

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