5305-01-616-5050, SCREW,CAP,SOCKET HEAD

4140-01-616-4678 FAN ASSEMBLY,CENTRIFUGAL

National Stock Number:
5305-01-616-5050

Federal Supply Class:
5305

National Item Identification Number:
016165050

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:

11250777	0Y3H3	FASTENAL COMPANY
7649	1NWY2	INDEPENDENT ROUGH TERRAIN CENTER LLC

Techincal Specification:

FASTENER LENGTH	0.750 INCHES NOMINAL
HEAD DIAMETER	0.546 INCHES MINIMUM AND 0.573 INCHES MAXIMUM
HEAD HEIGHT	0.133 INCHES MINIMUM AND 0.150 INCHES MAXIMUM
HEAD STYLE	TRUSS
INTERNAL DRIVE STYLE	TORX
MATERIAL DOCUMENT AND CLASSIFICATION	CARBON STEEL MFR REF SINGLE MATERIAL RESPONSE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCY	1/4-20X3/4 ZINC TRUSS HEAD SIX-LOBE ASME B18.6.3 FULLY THREADED MACHINE SCREW
MATERIAL	STEEL OVERALL
MINIMUM TENSILE STRENGTH	60000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.2500 INCHES
SPLINE MAJOR DIAMETER	0.200 INCHES NOMINAL
SPLINE MINOR DIAMETER	0.200 INCHES NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	FE/ZN 3AT PER ASTM F1941 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	ZINC OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.750 INCHES NOMINAL
THREAD QUANTITY PER INCH	20
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)

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