5340-01-494-9228 PLATE,MOUNTING Index 4820-01-494-9231 VALVE,BALL

National Stock Number:
5305-01-494-9230

Federal Supply Class:
5305

National Item Identification Number:
014949230

Description:
SCREW,CLOSE TOLERANCE

Detail:
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 (0.001 IN.) (0.025 mm) or less of a specific diameter for items (1.000 IN.) (25 mm) or less in diameter. Items over (1.000 IN.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 IN.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 IN.) (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 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.


Manufacturer Information:
11925C5-18A59563REID PRODUCTS INC.
2912840-321856CENTROID, INC.
HT4020-5-1806950HOWMET GLOBAL FASTENING SYSTEMS INC
HT4020-5-180PTK6SPS TECHNOLOGIES INC
HT4020-5-1817446HUCK INTERNATIONAL, INC
HT4020-5-1873197HI-SHEAR CORPORATION
HT4020-5-18A06725SPS TECHNOLOGIES, LLC
HT4020-5-18A27624SPS TECHNOLOGIES LLC
HT4020-5-18A56878SPS TECHNOLOGIES, LLC
HT4020-5-1880539SPS TECHNOLOGIES, LLC
HT4020-5-1892215HOWMET GLOBAL FASTENING SYSTEMS INC
HT4020-5-1897928HUCK INTL INC
HT4020-5-18K5673SPS TECHNOLOGIES LTD TJ BROOKS DIVISION
HT4020-5-18L4528LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC
ST3M652C5-18D007R1TWIST TITE MFG, INC
ST3M652C5-18A06710VALLEY-TODECO, INC.
ST3M652C5-18A06725SPS TECHNOLOGIES, LLC
ST3M652C5-18A06950HOWMET GLOBAL FASTENING SYSTEMS INC
ST3M652C5-18A0ZC92HEARTLAND PRECISION FASTENERS INC
ST3M652C5-18A1VSL7HOUSTON PRECISION FASTENERS I LP
ST3M652C5-18A27624SPS TECHNOLOGIES LLC
ST3M652C5-18A56878SPS TECHNOLOGIES, LLC
ST3M652C5-18D58998FASTENER INNOVATION TECHNOLOGY, INC.
HT4020-5-18A59563REID PRODUCTS INC.
WC4020-5-1860516WEST COAST AEROSPACE, INC.
ST3M652C5-18D76301THE BOEING COMPANY


Techincal Specification:
COUNTERSINK ANGLE99.0 DEGREES MINIMUM
FASTENER LENGTH1.620 INCHES MINIMUM AND 1.707 INCHES MAXIMUM
GRIP DIAMETER0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM
GRIP LENGTH1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM
HEAD HEIGHT0.088 INCHES MINIMUM AND 0.090 INCHES MAXIMUM
HEAD DIAMETER0.575 INCHES MINIMUM AND 0.635 INCHES MAXIMUM
HEAD STYLEFLAT COUNTERSUNK UNDERCUT
INTERNAL DRIVE STYLEHIGH-TORQUE
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP XM-13 OVERALL
NOMINAL THREAD DIAMETER0.3125 INCHES
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
SURFACE FINISH32.0 MICROINCHES GRIP
SURFACE FINISH32.0 MICROINCHES THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.505 INCHES MINIMUM AND 0.572 INCHES MAXIMUM
THREAD SERIES DESIGNATORUNJF
THREAD QUANTITY PER INCH24


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