5310-01-387-3804 WASHER,RECESSED Index 5305-01-387-3806 SCREW,SHOULDER

National Stock Number:
5306-01-387-3805

Federal Supply Class:
5306

National Item Identification Number:
013873805

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:
03A098-7-351W025NORTHROP GRUMMAN SYSTEMS CORP
03A098-7-3576823NORTHROP GRUMMAN SYSTEMS CORPORATION
AIC1653-7-3506725SPS TECHNOLOGIES, LLC
DF33003-7-3517446HUCK INTERNATIONAL, INC
123709-7-3580539SPS TECHNOLOGIES, LLC
DF33003-7-3597928HUCK INTL INC
VCJ0001-7-3506710VALLEY-TODECO, INC.
PBF1420-7-3527624SPS TECHNOLOGIES LLC
SII1188-7-3557928SONIC INDUSTRIES, INC.
MB209-7-3573197HI-SHEAR CORPORATION
VS3319-7-3592215HOWMET GLOBAL FASTENING SYSTEMS INC
MB209-7-35L4528LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC


Techincal Specification:
THREAD SERIES DESIGNATORUNJF
NOMINAL THREAD DIAMETER0.437 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.599 INCHES NOMINAL
FASTENER LENGTH2.771 INCHES MINIMUM AND
2.801 INCHES MAXIMUM
MATERIALNICKEL ALLOY 718 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MINIMUM TENSILE STRENGTH125000 POUNDS PER SQUARE INCH
HEAD STYLESPLINE DRIVE SHEAR HEAD
HEAD HEIGHT0.247 INCHES MINIMUM AND
0.267 INCHES MAXIMUM
HEAD MINOR DIAMETER0.707 INCHES MINIMUM
GRIP LENGTH2.177 INCHES MINIMUM AND
2.197 INCHES MAXIMUM
GRIP DIAMETER0.4360 INCHES MINIMUM AND
0.4370 INCHES MAXIMUM


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