5305-01-597-2890 SCREW,TAPPING 5305-01-597-2995 SCREW,MACHINE

National Stock Number:
5305-01-597-2902

Federal Supply Class:
5305

National Item Identification Number:
015972902

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:
12759-012550Y3H3FASTENAL COMPANY
242470Y3H3FASTENAL COMPANY


Techincal Specification:
COLORBLACK OVERALL
FASTENER LENGTH0.220 INCHES MINIMUM AND 0.250 INCHES MAXIMUM
HARDNESS RATING39.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER0.429 INCHES MINIMUM AND 0.480 INCHES MAXIMUM
HEAD STYLEFLAT COUNTERSUNK
INTERNAL DRIVE STYLEHEXAGON
MATERIAL DOCUMENT AND CLASSIFICATIONASTM F835 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYBLACK OXICE FINISH FLAT SOCKET CAP SCREW
MATERIALSTEEL OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES
SURFACE TREATMENTBLACK CHEMICAL FINISH OVERALL
THREAD LENGTH0.059 INCHES MINIMUM AND 0.089 INCHES MAXIMUM
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD SERIES DESIGNATORUNRC
THREAD QUANTITY PER INCH20
WIDTH ACROSS FLATS0.156 INCHES NOMINAL


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