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 |
---|---|---|
CRTL | CRITICALITY CODE JUSTIFICATION | ZZZW |
AASB | FASTENER LENGTH | 1.750 INCHES NOMINAL |
ZZZW | DEPARTURE FROM CITED DOCUMENT | MATERIAL WILL BE IN ACCORANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS |
AHYM | NOMINAL THREAD DIAMETER | 0.625 INCHES |
AASU | HEAD HEIGHT | 0.378 INCHES MINIMUM AND 0.403 INCHES MAXIMUM |
CMLP | THREAD QUANTITY PER INCH | 18 |
AATB | WIDTH BETWEEN FLATS | 0.922 INCHES MINIMUM AND 0.938 INCHES MAXIMUM |
AAJF | THREAD DIRECTION | RIGHT-HAND |
ZZZT | NONDEFINITIVE SPEC/STD DATA | 1 TYPE |
THSD | THREAD SERIES DESIGNATOR | UNF |
AAJD | THREAD CLASS | 2A |
AASK | HEAD STYLE | HEXAGON |
SFTT | SURFACE TREATMENT | PHOSPHATE OVERALL |
AASA | THREAD LENGTH | 1.500 INCHES NOMINAL |
MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A193 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
MATT | MATERIAL | STEEL COMP 4140 OVERALL OR STEEL COMP 4142 OVERALL OR STEEL COMP 4145 OVERALL |