4730-01-125-5069 LOCKNUT,TUBE FITTING Index 5310-01-125-5073 WASHER,FLAT

National Stock Number:
5310-01-125-5070

Federal Supply Class:
5310

National Item Identification Number:
011255070

Description:
NUT,SELF-LOCKING,BLIND RIVET

Detail:
A METALLIC HEADED FASTENER HAVING INTERNAL THREADS FOR A PORTION OF THE FULL LENGTH. IT MAY HAVE A SMOOTH, HEXAGON OR SPLINED SHANK WITH AN OPEN OR CLOSED END. IT IS DESIGNED TO BE EXPANDED TIGHTLY AGAINST THE MATERIAL IT IS BEING INSTALLED IN BY MEANS OF A SPECIAL TOOL. THE ITEM MUST HAVE A SPECIFIED GRIP RANGE. THE GRIP RANGE IS THE THICKNESS OF THE MATERIAL THE ITEM IS BEING INSTALLED IN. AN INTEGRAL FEATURE IS INCORPORATED FOR LOCKING ON THE THREADS OF A MATING MEMBER.


Manufacturer Information:
66915-428-556878SPS TECHNOLOGIES, LLC
79CBNR4-5019L2ESNA, LLC
79CBNR4-572962HARVARD INDUSTRIES INC
C2989-428-581755LOCKHEED MARTIN CORPORATION


Techincal Specification:
HEAD HEIGHT0.040 INCHES NOMINAL
HEAD MAJOR DIAMETER0.451 INCHES MINIMUM AND 0.455 INCHES MAXIMUM
HEAD MINOR COUNTERSINK ANGLE59.75 DEGREES MINIMUM AND 60.25 DEGREES MAXIMUM
HEAD MINOR DIAMETER0.385 INCHES MINIMUM AND 0.389 INCHES MAXIMUM
HEAD STYLEELIPTICAL COUNTERSUNK
HEAD MAJOR COUNTERSINK ANGLE75.75 DEGREES MINIMUM AND 76.25 DEGREES MAXIMUM
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,COND A FED SPEC ALL MATERIAL RESPONSES OVERALL
MATERIALSTEEL COMP 304 OR STEEL COMP 305 OVERALL
NOMINAL THREAD SIZE0.250 INCHES
NUT DIAMETER0.340 INCHES MINIMUM AND 0.342 INCHES MAXIMUM
NUT GRIP RANGE+0.280 TO 0.340 INCHES
NUT STYLEBLIND RIVET W/SMOOTH ROUND SHANK
NUT LENGTH0.747 INCHES MAXIMUM
SHANK END TYPEOPEN
SPECIFICATION/STANDARD DATA81755-C2989 MANUFACTURERS STANDARD
TEMP RATING450.0 FAHRENHEIT MAXIMUM
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH28
THREAD SERIESUNF


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