2815-00-364-1138 GUIDE,ENGINE POPPET VALVE TAPPET Index 6250-00-364-1143 INACTIVE

National Stock Number:
5306-00-364-1140

Federal Supply Class:
5306

National Item Identification Number:
003641140

Description:
BOLT,CLOSE TOLERANCE

Detail:
An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 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 not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see BOLT, SHEAR. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see BOLT, MACHINE.


Manufacturer Information:
1881PC76099A1ML14BRINKLEY TECHNOLOGY GROUP LLC
1881PC76099A28265HERCULES ENGINE CO INC
3803PC211ML14BRINKLEY TECHNOLOGY GROUP LLC
3802PC2124047COOPER INDUSTRIES INC DBA COOPER TOOLS
3803PC2128265HERCULES ENGINE CO INC
3802PC216X081COOPER INDUSTRIES INDUSTRIAL MACHINERY DIV
76099A16460MARINE ENGINE SPECIALTIES DIV OF MESCO TECTONICS INC
77099A16460MARINE ENGINE SPECIALTIES DIV OF MESCO TECTONICS INC
77099A1ML14BRINKLEY TECHNOLOGY GROUP LLC
B2010-10PC1481ML14BRINKLEY TECHNOLOGY GROUP LLC
B2010-10PC14828265HERCULES ENGINE CO INC
77099A28265HERCULES ENGINE CO INC
A022S61-96780064NAVAL SHIP SYSTEMS COMMAND
PY20S61-276480064NAVAL SHIP SYSTEMS COMMAND
S6100-413424PC14880064NAVAL SHIP SYSTEMS COMMAND
S6100-413434PC14880064NAVAL SHIP SYSTEMS COMMAND
S6100-697295PC10380064NAVAL SHIP SYSTEMS COMMAND
S6100-697364PC10380064NAVAL SHIP SYSTEMS COMMAND
YF257S61-01107PC77699A80064NAVAL SHIP SYSTEMS COMMAND
YF257S61-303PC77099A80064NAVAL SHIP SYSTEMS COMMAND
YMTS41-081PC76099A80064NAVAL SHIP SYSTEMS COMMAND
YP249S41-01PC2180064NAVAL SHIP SYSTEMS COMMAND
YP249S41-02PC2180064NAVAL SHIP SYSTEMS COMMAND
YP249S41-37PC2180064NAVAL SHIP SYSTEMS COMMAND
YT144S41-0112PC76099A80064NAVAL SHIP SYSTEMS COMMAND
YT154S41-0322PC76099A80064NAVAL SHIP SYSTEMS COMMAND
YT154S61-0822PC76099A80064NAVAL SHIP SYSTEMS COMMAND
YT184S61-0801PC2180064NAVAL SHIP SYSTEMS COMMAND
YT184S61-0802PC2180064NAVAL SHIP SYSTEMS COMMAND
YT184S61-0837PC2180064NAVAL SHIP SYSTEMS COMMAND
YT230S6100-13806PC2180064NAVAL SHIP SYSTEMS COMMAND
YT230S6100-404295PC2180064NAVAL SHIP SYSTEMS COMMAND
YT230S6100-404307PC2180064NAVAL SHIP SYSTEMS COMMAND
YT238S41-34180064NAVAL SHIP SYSTEMS COMMAND


Techincal Specification:
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER1.062 INCHES NOMINAL FIRST HOLE
FASTENER LENGTH1.188 INCHES NOMINAL
GRIP LENGTH0.563 INCHES NOMINAL
GRIP DIAMETER0.4375 INCHES MINIMUM AND 0.4385 INCHES MAXIMUM
HEAD HEIGHT0.312 INCHES NOMINAL
HEAD STYLEHEXAGON
MATERIALSTEEL CORROSION RESISTING OVERALL
MINIMUM TENSILE STRENGTH115000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.438 INCHES
SHANK UNTHREADED HOLE DIAMETER0.125 INCHES NOMINAL FIRST HOLE
WIDTH BETWEEN FLATS0.625 INCHES NOMINAL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.625 INCHES MINIMUM
THREAD SERIES DESIGNATORUNF
THREAD QUANTITY PER INCH20


Click here to Register for Free 30-day Trial

© 2026 NSN-Now. All rights reserved.    Privacy Policy  |  Contact Us