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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
83324 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
CQJX NOMINAL THREAD SIZE 0.250 INCHES
CQJX NOMINAL THREAD SIZE 0.250 INCHES
BZGJ INSERT SIZE 0.312-24 THD
BZYF INTERNAL THREAD RELIEF DEPTH 0.075 INCHES NOMINAL
CMLP THREAD QUANTITY PER INCH 28
STYL STYLE DESIGNATOR KEYLOCK
BZYG FULL INTERNAL THREAD LENGTH 0.315 INCHES NOMINAL
MATT MATERIAL STEEL OVERALL
THSD THREAD SERIES DESIGNATOR UNF
ABRY LENGTH 0.390 INCHES NOMINAL
CBBL FEATURES PROVIDED INDIVIDUALLY KEYED
SFTT SURFACE TREATMENT CADMIUM OVERALL

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