5305-01-615-1430, SCREW,CLOSE TOLERANCE

4820-01-614-7213 VALVE ASSEMBLY,MANIFOLD

National Stock Number:
5305-01-615-1430

Federal Supply Class:
5305

National Item Identification Number:
016151430

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:

PMT-1154-V8	98897	LOCKHEED MARTIN CORP
PMT1154V8	05755	PHILLIPS SCREW CO RULE INDUSTRIES DIV

Techincal Specification:

DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	0.700 INCHES NOMINAL FIRST HOLE
COUNTERSINK ANGLE	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
FASTENER LENGTH	0.801 INCHES MINIMUM AND 0.831 INCHES MAXIMUM
GRIP DIAMETER	0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM
GRIP LENGTH	0.500 INCHES NOMINAL
HEAD DIAMETER	0.497 INCHES MINIMUM AND 0.507 INCHES MAXIMUM
HEAD STYLE	FLAT COUNTERSUNK
INTERNAL DRIVE STYLE	OFFSET CRUCIFORM (TORQUE SET)
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 4967,UNS S66286 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	TITANIUM ALLOY OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCY	MORTORQ 100 DEG MACHINE-FLAT HEAD SCREW,CLOSE TOLERENCE
PROPRIETARY CHARACTERISTICS	PACS
MINIMUM TENSILE STRENGTH	16000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.250 INCHES
SHANK UNTHREADED HOLE DIAMETER	0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE
SPECIAL FEATURES	MORTORQ SPIRAL DRIVE IAW PSC-5006; MIN TENSILE STRENGTH AT 5820 LBS; HEAT TREATMENT IAW MIL-H-81200
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.316 INCHES NOMINAL
THREAD QUANTITY PER INCH	28
THREAD SERIES DESIGNATOR	UNJF

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