5306-01-338-0426 BOLT,RIBBED SHOULDER Index 5305-01-338-0428 SCREW,CAP,HEXAGON HEAD

National Stock Number:
5305-01-338-0427

Federal Supply Class:
5305

National Item Identification Number:
013380427

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:
21105090253711NAVAL SEA SYSTEMS COMMAND
315424 PC 7834712LAKE SHORE SYSTEMS, INC.
PL-315424 PC 7834712LAKE SHORE SYSTEMS, INC.
801-6405342 FIND 2453711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
FASTENER LENGTH1.250 INCHES NOMINAL
HARDNESS RATING39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM FASTENER
HEAD DIAMETER0.550 INCHES MINIMUM AND 0.562 INCHES MAXIMUM
HEAD HEIGHT0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM
HEAD STYLEFLAT CHAMFER
INTERNAL DRIVE STYLEHEXAGON
LOCKING FEATUREPATCH OR PELLET OR STRIP THREADS
MATERIAL DOCUMENT AND CLASSIFICATIONASTMA574 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
MATERIALSTEEL UNS K03104 FASTENER
MINIMUM YIELD STRENGTH155000 POUNDS PER SQUARE INCH
MINIMUM TENSILE STRENGTH180000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.375 INCHES
WIDTH ACROSS FLATS0.312 INCHES NOMINAL
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS3A
THREAD LENGTH1.115 INCHES NOMINAL
THREAD SERIES DESIGNATORUNC
THREAD QUANTITY PER INCH16


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