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National Stock Number:
5305-01-477-5835
Federal Supply Class:
5305
National Item Identification Number:
014775835
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.
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Manufacturer Information:
| 11925C5-19A | 59563 | REID PRODUCTS INC. | | HT4020-5-19A | 06725 | SPS TECHNOLOGIES, LLC | | HT4020-5-19A | 06950 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4020-5-19A | 0PTK6 | SPS TECHNOLOGIES INC | | HT4020-5-19A | 17446 | HUCK INTERNATIONAL, INC | | HT4020-5-19A | 27624 | SPS TECHNOLOGIES LLC | | ST3M652C5-19A | 06710 | VALLEY-TODECO, INC. | | ST3M652C5-19A | 0ZC92 | HEARTLAND PRECISION FASTENERS INC | | HT4020-5-19A | 56878 | SPS TECHNOLOGIES, LLC | | HT4020-5-19A | 73197 | HI-SHEAR CORPORATION | | HT4020-5-19A | 80539 | SPS TECHNOLOGIES, LLC | | HT4020-5-19A | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HT4020-5-19A | K5673 | SPS TECHNOLOGIES LTD TJ BROOKS DIVISION | | HT4020-5-19A | L4528 | LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | | ST3M652C5-19A | 1VSL7 | HOUSTON PRECISION FASTENERS I LP | | ST3M652C5-19A | 58998 | FASTENER INNOVATION TECHNOLOGY, INC. | | WC4020-5-19A | 60516 | WEST COAST AEROSPACE, INC. | | ST3M652C5-19A | 76301 | THE BOEING COMPANY |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNJF | | NOMINAL THREAD DIAMETER | 0.3125 INCHES | | THREAD QUANTITY PER INCH | 24 | | THREAD CLASS | 3A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.531 INCHES NOMINAL | | FASTENER LENGTH | 1.7025 INCHES MINIMUM AND | | 1.7495 INCHES MAXIMUM | | MATERIAL | STEEL COMP XM-13 FASTENER | | MATERIAL DOCUMENT AND CLASSIFICATION | AMS5629, PH13-8MO ASSN STD SINGLE MATERIAL RESPONSE FASTENER | | SURFACE TREATMENT | PASSIVATE FASTENER | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS-QQ-P-35 ASSN STD SINGLE TREATMENT RESPONSE FASTENER | | HEAD STYLE | FLAT COUNTERSUNK UNDERCUT | | HEAD DIAMETER | 0.575 INCHES NOMINAL | | HEAD HEIGHT | 0.0878 INCHES MINIMUM AND | | 0.0898 INCHES MAXIMUM | | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND | | 101.0 DEGREES MAXIMUM | | INTERNAL DRIVE STYLE | HIGH-TORQUE | | GRIP LENGTH | 1.1775 INCHES MINIMUM AND | | 1.1975 INCHES MAXIMUM | | GRIP DIAMETER | 0.3115 INCHES MINIMUM AND | | 0.3120 INCHES MAXIMUM | | FEATURES PROVIDED | O RING AND | | CETYL ALCOHOL LUBRICANT | | SPECIAL FEATURES | O-RING PER ST7M251, NO FINISH, NO LUBRICANT; MINIMUM 40 PERCENT OF NON-BEARING HEAD SURFACE COAT WITH WHITE PAINT, COLOR 37875 PER FED-STD-595, REMOVABLE WITH SOLVENT | | CRITICALITY CODE JUSTIFICATION | AGAV | | PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,CLOSE TOLERANCE-ASSEMBLY, 100 DEG COUNTERSUNK HEAD, DOVETAIL SLOT,CRES |
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