Part Number
Part Number:
NSN:
NIIN:
Item Name:
SCREW , CAP , HEXAGON HEAD
Definition:
AN EXTERNALLY THREADED FASTENER DESIGNED FOR INSERTION INTO HOLES IN ASSEMBLED PARTS, FOR MATING WITH A PREFORMED INTERNAL THREAD AND FOR TIGHTENING OR RELEASING BY TORQUING THE HEAD. THE THREADED AND UNTHREADED PORTIONS ARE BOTH OF THE SAME NOMINAL DIAMETER OF 0.190 INCH (5 MM) OR LARGER. HEAD DIMENSIONS AND SIZES OF THREADED AND UNTHREADED PORTIONS SHALL CONFORM TO INTERNATIONALLY RECOGNIZED FASTENER STANDARDS. THE THREAD LENGTH BEING THE CONTROLLED DIMENSION, THE GRIP LENGTH IS NOT SPECIFIED. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. EXCLUDES BOLT, MACHINE; BOLT, EXTERNALLY RELIEVED BODY; BOLT, INTERNAL WRENCHING; AND SCREW, CAP, SOCKET HEAD.
CAGE Information
Code | Company |
---|---|
81349 | MILITARY SPECIFICATIONS PROMULGATED |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
MRC | Requirements Statement | Clear Text Reply |
---|---|---|
CQFM | HARDNESS RATING | 23.0 ROCKWELL C MINIMUM OVERALL AND 34.0 ROCKWELL C MAXIMUM OVERALL |
AASB | FASTENER LENGTH | 4.900 INCHES MINIMUM AND 5.000 INCHES MAXIMUM |
SFTT | SURFACE TREATMENT | ZINC OVERALL AND CHROMATE OVERALL |
AAJF | THREAD DIRECTION | RIGHT-HAND |
CQBC | MINIMUM TENSILE STRENGTH | 120000 POUNDS PER SQUARE INCH |
CMLP | THREAD QUANTITY PER INCH | 14 |
MATT | MATERIAL | STEEL OVERALL |
MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | SAE J429 GR5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633 TY2,FE/ZN 13 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
THSD | THREAD SERIES DESIGNATOR | UNC |
AASA | THREAD LENGTH | 1.125 INCHES NOMINAL |
AAJD | THREAD CLASS | 2A |
AASK | HEAD STYLE | HEXAGON |
AASU | HEAD HEIGHT | 0.272 INCHES MINIMUM AND 0.291 INCHES MAXIMUM |
AHYM | NOMINAL THREAD DIAMETER | 0.438 INCHES |
ZZZT | NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 5 GRADE |
AATB | WIDTH BETWEEN FLATS | 0.612 INCHES MINIMUM AND 0.625 INCHES MAXIMUM |