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 |
---|---|
81348 | FEDERAL SPECIFICATIONS PROMULGATED B |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
MRC | Requirements Statement | Clear Text Reply |
---|---|---|
CMLP | THREAD QUANTITY PER INCH | 24 |
CRZS | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 2.240 INCHES MINIMUM FIRST HOLE AND 2.354 INCHES MAXIMUM FIRST HOLE |
ZZZT | NONDEFINITIVE SPEC/STD DATA | 2 TYPE AND 10P STYLE |
SFTT | SURFACE TREATMENT | PHOSPHATE ZINC OVERALL |
CQHQ | MINIMUM YIELD STRENGTH | 130000 POUNDS PER SQUARE INCH |
CQFM | HARDNESS RATING | 33.0 ROCKWELL C MINIMUM OVERALL AND 39.0 ROCKWELL C MAXIMUM OVERALL |
AASA | THREAD LENGTH | 1.000 INCHES MINIMUM AND 1.188 INCHES MAXIMUM |
CSYM | SURFACE FINISH | 63.0 MICROINCHES THREADS |
AASB | FASTENER LENGTH | 2.406 INCHES MINIMUM AND 2.500 INCHES MAXIMUM |
AAJF | THREAD DIRECTION | RIGHT-HAND |
AAWB | SHANK UNTHREADED HOLE DIAMETER | 0.105 INCHES MINIMUM FIRST HOLE AND 0.113 INCHES MAXIMUM FIRST HOLE |
MATT | MATERIAL | STEEL OVERALL |
THSD | THREAD SERIES DESIGNATOR | UNF |
STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | DOD-P-16232 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
AAJD | THREAD CLASS | 2A |
AASK | HEAD STYLE | HEXAGON |
MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | SAE J429 GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR ASTM A354 GRADE BD ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
AATB | WIDTH BETWEEN FLATS | 0.561 INCHES MINIMUM AND 0.562 INCHES MAXIMUM |
CQBC | MINIMUM TENSILE STRENGTH | 150000 POUNDS PER SQUARE INCH |
AHYM | NOMINAL THREAD DIAMETER | 0.375 INCHES |
AASU | HEAD HEIGHT | 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM |