Part Number: HT239PB3-13

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CONDITION:
NS
HI-SHEAR CORPORATION73197
HI-SHEAR CORPORATION73197
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.256 INCHES MINIMUM AND 0.296 INCHES MAXIMUM
FASTENER LENGTH0.704 INCHES MINIMUM AND 0.724 INCHES MAXIMUM
HEAD STYLEFLAT COUNTERSUNK
HEAD DIAMETER0.297 INCHES MINIMUM AND 0.302 INCHES MAXIMUM
GRIP DIAMETER0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM
INTERNAL DRIVE STYLEHIGH-TORQUE
NOMINAL THREAD DIAMETER0.190 INCHES
GRIP LENGTH0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM
THREAD QUANTITY PER INCH32
MINIMUM TENSILE STRENGTH160000 POUNDS PER SQUARE INCH
COUNTERSINK ANGLE100.0 DEGREES NOMINAL
SURFACE FINISH63.0 MICROINCHES GRIP
MATERIALSTEEL COMP 4140 OVERALL OR STEEL COMP E4340 OVERALL OR STEEL COMP 6150 OVERALL OR STEEL COMP 8735 OVERALL OR STEEL COMP 8740 OVERALL OR STEEL COMP 4130 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OVERALL OR MIL-S-5400 MIL SPEC 2ND MATERIAL RESPONSE OVERALL OR MIL-S-8503 MIL SPEC 3RD MATERIAL RESPONSE OVERALL OR MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OVERALL OR MIL-S-6049 MIL SPEC 5TH MATERIAL RESPONSE OVERALL OR MIL-S-6758 MIL SPEC 6TH MATERIAL RESPONSE OVERALL
SURFACE TREATMENTCADMIUM OVERALL AND CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES DESIGNATORUNF
A SCREW, MACHINE or SCREW, CAP, SOCKET HEAD whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth ( . 1 IN.) ( . 25 mm) or less of a specific diameter for items (1. IN.) (25 mm) or less in diameter. Items over (1. IN.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths ( . 15 IN.) ( . 38 mm) or less. The nominal major diameter of the threads shall be at least one thousandth ( . 1 IN.) ( . 25 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the Screw Thread Standards, FED STD H28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.