Part Number: 106750-4-12

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CONDITION:
NS
SPS TECHNOLOGIES, LLC80539
HUCK INTERNATIONAL, INC.17446
HUCK INTL INC97928
HUCK INTERNATIONAL, INC.17446
HUCK INTL INC97928
NORTHROP GRUMMAN SYSTEMS CORPORATION26512
HI-SHEAR CORPORATION73197
LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INCL4528
ARCONIC GLOBAL FASTENERS & RINGS, INC.6950
ALCOA GLOBAL FASTENERS, INC.92215
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.290 INCHES MINIMUM AND 0.357 INCHES MAXIMUM
FASTENER LENGTH1.050 INCHES MINIMUM AND 1.097 INCHES MAXIMUM
HEAD STYLEFLAT COUNTERSUNK
HEAD DIAMETER0.389 INCHES MINIMUM AND 0.394 INCHES MAXIMUM
GRIP DIAMETER0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM
INTERNAL DRIVE STYLEHIGH-TORQUE
NOMINAL THREAD DIAMETER0.250 INCHES
GRIP LENGTH0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM
THREAD QUANTITY PER INCH28
MINIMUM TENSILE STRENGTH160000 POUNDS PER SQUARE INCH
HARDNESS RATING36.0 ROCKWELL C MINIMUM OVERALL AND 40.0 ROCKWELL C MAXIMUM OVERALL
COUNTERSINK ANGLE100.0 DEGREES NOMINAL
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
SURFACE TREATMENTCADMIUM OVERALL AND CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES DESIGNATORUNJF
SPECIFICATION/STANDARD DATA26512-GB510L MANUFACTURERS STANDARD
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.