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 |
|---|---|
| 64959 | AMERICAN TELEPHONE AND TELEGRAPH CO |
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| CSYM | SURFACE FINISH | 125.0 MICROINCHES GRIP |
| CSYM | SURFACE FINISH | 125.0 MICROINCHES GRIP |
| AASA | THREAD LENGTH | 0.625 INCHES MINIMUM |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL OR ZINC OVERALL |
| AATB | WIDTH BETWEEN FLATS | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | 2 TYPE AND 10P STYLE AND 2 GRADE |
| CQFM | HARDNESS RATING | 23.0 ROCKWELL C NOMINAL OVERALL |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| CSYM | SURFACE FINISH | 125.0 MICROINCHES BEARING SURFACE OF HEAD |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | SAE GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATT | MATERIAL | STEEL OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OVERALL OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| AASU | HEAD HEIGHT | 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| AAJD | THREAD CLASS | 2A |
| AASK | HEAD STYLE | HEXAGON |
| AASB | FASTENER LENGTH | 0.625 INCHES NOMINAL |
| CQBC | MINIMUM TENSILE STRENGTH | 74000 POUNDS PER SQUARE INCH |
| CMLP | THREAD QUANTITY PER INCH | 20 |