4820-01-456-9026 VALVE,RELIEF,PRESSURE AND TEMPER Index 5970-01-456-9028 INSULATION SLEEVING,ELECTRICAL

National Stock Number:
5305-01-456-9027

Federal Supply Class:
5305

National Item Identification Number:
014569027

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:
91251A8832V507MCMASTER-CARR SUPPLY COMPANY
91251A88339428MCMASTER-CARR SUPPLY CO


Techincal Specification:
COLORBLACK OVERALL
FASTENER LENGTH2.750 INCHES NOMINAL
HARDNESS RATING37.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER1.293 INCHES MINIMUM AND 1.312 INCHES MAXIMUM
HEAD HEIGHT0.864 INCHES MINIMUM AND 0.875 INCHES MAXIMUM
HEAD STYLEFLAT CHAMFER
INTERNAL DRIVE STYLEHEXAGON
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A574 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL UNS K03104 OVERALL
NOMINAL THREAD DIAMETER0.875 INCHES
WIDTH ACROSS FLATS0.750 INCHES NOMINAL
SURFACE TREATMENTOXIDE OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH2.150 INCHES MINIMUM
THREAD QUANTITY PER INCH9
THREAD SERIES DESIGNATORUNRC


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