5305-01-469-2870 SCREW,CLOSE TOLERANCE Index 5998-01-469-2872 BACKPLANE ASSEMBLY

National Stock Number:
5305-01-469-2871

Federal Supply Class:
5305

National Item Identification Number:
014692871

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:
11825D4-12A59563REID PRODUCTS INC.
3M1170D4-12A76301THE BOEING COMPANY
TX1027D4-12A06725SPS TECHNOLOGIES, LLC
TX1027D4-12A06950HOWMET GLOBAL FASTENING SYSTEMS INC
TX1027D4-12A0PTK6SPS TECHNOLOGIES INC
HP1170D4-120ZC92HEARTLAND PRECISION FASTENERS INC
TX1027D4-12A27624SPS TECHNOLOGIES LLC
TX1027D4-12A56878SPS TECHNOLOGIES, LLC
TX1027D4-12A73197HI-SHEAR CORPORATION
TX1927D4-12A73197HI-SHEAR CORPORATION
TX1027D4-12A80539SPS TECHNOLOGIES, LLC
TX1027D4-12A92215HOWMET GLOBAL FASTENING SYSTEMS INC
TX1027D4-12AC4293ALCOA FASTENING SYSTEMS FAIRCHILDFASTENERS EUROPE - VSD GMBH
TX1027D4-12AL4528LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC


Techincal Specification:
CRITICALITY CODE JUSTIFICATIONAGAV
COUNTERSINK ANGLE99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
FASTENER LENGTH1.160 INCHES MINIMUM AND 1.190 INCHES MAXIMUM
GRIP DIAMETER0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM
GRIP LENGTH0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM
HEAD DIAMETER0.358 INCHES MINIMUM AND 0.365 INCHES MAXIMUM
HEAD STYLEFLAT COUNTERSUNK
INTERNAL DRIVE STYLETORX
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYBOLT, 100 DEGREE REDUCED HEAD, GEAR DRIVE RECESS - PH13-8MO(125 KSI SHEAR)
MATERIALSTEEL COMP XM-13 OVERALL
MINIMUM TENSILE STRENGTH4400 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER0.249 INCHES
SINGLE SHEAR STRENGTH125000 POUNDS PER SQUARE INCH
SPECIAL FEATURESCHAMFERED END - CHAMFER PLUS INCOMPLETE THREADS NOT TO EXCEED 2 THREAD PITCHES
SPLINE MAJOR DIAMETER0.1540 INCHES MINIMUM AND 0.1560 INCHES MAXIMUM
SPLINE MINOR DIAMETER0.1105 INCHES MINIMUM AND 0.1125 INCHES MAXIMUM
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS3A
THREAD DIRECTIONLEFT-HAND
THREAD LENGTH0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM
THREAD QUANTITY PER INCH28
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF)


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