5305-01-371-8455 SCREW,CAP,SOCKET HEAD Index 5305-01-371-8457 SCREW,CAP,SOCKET HEAD

National Stock Number:
5305-01-371-8456

Federal Supply Class:
5305

National Item Identification Number:
013718456

Description:
SCREW,CAP,SOCKET HEAD

Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW, SHOULDER; and SCREW, MACHINE.


Manufacturer Information:
1/2-20UNF-3A X 1-1/4" GR31680204AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED
1/2-20UNF-3A X 1-1/4" GR31681349MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
1/2-20UNF-3A X 1-1/4" GR31680204AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED
1/2-20UNF-3A X 1-1/4' GR31680204AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED
1/2-20UNF-3A X 1-1/4' GR31681349MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
1/2-20UNF-3A X 1-1/4" GR31681349MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
MIL-DTL-122281349MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
MIL-S-122281349MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
CUP PT,SLF LOCK ,MS51023-153D9182ZF INDUSTRIEANTRIEBE WITTEN GMBH


Techincal Specification:
FASTENER LENGTH1.250 INCHES NOMINAL
HARDNESS RATING95.0 ROCKWELL B MINIMUM OVERALL
HEAD DIAMETER0.735 INCHES MINIMUM AND 0.750 INCHES MAXIMUM
HEAD HEIGHT0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM
HEAD STYLEFLAT CHAMFER
INTERNAL DRIVE STYLEHEXAGON
MATERIALSTEEL COMP 316 OVERALL
MINIMUM TENSILE STRENGTH90000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.500 INCHES
NONDEFINITIVE SPEC/STD DATA2 TYPE
WIDTH ACROSS FLATS0.375 INCHES NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH1.250 INCHES MINIMUM
THREAD SERIES DESIGNATORUNF
THREAD QUANTITY PER INCH20


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