5310-01-462-2741 WASHER,FLAT Index 5305-01-462-2743 SCREW,MACHINE

National Stock Number:
5305-01-462-2742

Federal Supply Class:
5305

National Item Identification Number:
014622742

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:
11925C6-23A59563REID PRODUCTS INC.
HT4020-6-23A06725SPS TECHNOLOGIES, LLC
HT4020-6-23A06950HOWMET GLOBAL FASTENING SYSTEMS INC
HT4020-6-23A0PTK6SPS TECHNOLOGIES INC
HT4020-6-23A17446HUCK INTERNATIONAL, INC
HT4020-6-23A27624SPS TECHNOLOGIES LLC
ST3M652C6-23A06710VALLEY-TODECO, INC.
HT4020-6-23A56878SPS TECHNOLOGIES, LLC
HT4020-6-23A73197HI-SHEAR CORPORATION
HT4020-6-23A80539SPS TECHNOLOGIES, LLC
HT4020-6-23A92215HOWMET GLOBAL FASTENING SYSTEMS INC
HT4020-6-23A97928HUCK INTL INC
HT4020-6-23AK5673SPS TECHNOLOGIES LTD TJ BROOKS DIVISION
HT4020-6-23AL4528LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC
ST3M652C6-23A0ZC92HEARTLAND PRECISION FASTENERS INC
ST3M652C6-23A1VSL7HOUSTON PRECISION FASTENERS I LP
ST3M652C6-23A58998FASTENER INNOVATION TECHNOLOGY, INC.
WC4020-6-23A60516WEST COAST AEROSPACE, INC.
ST3M652C6-23A76301THE BOEING COMPANY


Techincal Specification:
COUNTERSINK ANGLE99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
CRITICALITY CODE JUSTIFICATIONAGAV
FASTENER LENGTH2.1135 INCHES MINIMUM AND 2.1605 INCHES MAXIMUM
FEATURES PROVIDEDO RING AND CETYL ALCOHOL LUBRICANT
GRIP DIAMETER0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM
GRIP LENGTH1.4275 INCHES MINIMUM AND 1.4475 INCHES MAXIMUM
HEAD HEIGHT0.1147 INCHES MINIMUM AND 0.1167 INCHES MAXIMUM
HEAD DIAMETER0.692 INCHES MINIMUM
HEAD STYLEFLAT COUNTERSUNK UNDERCUT
INTERNAL DRIVE STYLEHIGH-TORQUE
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5629, PH13-8MO ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP XM-13 OVERALL
NOMINAL THREAD DIAMETER0.3750 INCHES
PART NAME ASSIGNED BY CONTROLLING AGENCYSCREW, CLOSE TOLERANCE-ASSEMBLY, 100 DEGREE COUNTERSUNK SEALING HEAD, DOVETAIL SLOT, CRES
SPECIAL FEATURESO-RING MATERIAL - FLOUROSILICONE RUBBER PER MIL-R-25988, TYPE I, CLASS 1, GRADE 70
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS-QQ-P-35 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS3A
THREAD LENGTH0.692 INCHES NOMINAL
THREAD SERIES DESIGNATORUNJF
THREAD QUANTITY PER INCH24


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