5305-01-337-5981, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-337-5981

Federal Supply Class:
5305

National Item Identification Number:
013375981

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:

HT359RNE6-18	73197	HI-SHEAR CORPORATION
HT359RNE6-18	L4528	LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC

Techincal Specification:

COUNTERSINK ANGLE	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
FASTENER LENGTH	1.703 INCHES MINIMUM AND 1.750 INCHES MAXIMUM
FEATURES PROVIDED	O RING
GRIP DIAMETER	0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM
GRIP LENGTH	1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM
HEAD DIAMETER	0.729 INCHES MINIMUM AND 0.760 INCHES MAXIMUM
HEAD HEIGHT	0.115 INCHES MINIMUM AND 0.117 INCHES MAXIMUM
HEAD STYLE	FLAT COUNTERSUNK UNDERCUT
INTERNAL DRIVE STYLE	HIGH-TORQUE
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 4967 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
MATERIAL	RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR RING
MATERIAL	TITANIUM ALLOY UNS R56400 FASTENER
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.375 INCHES
SURFACE FINISH	32.0 MICROINCHES BEARING SURFACE OF HEAD
SURFACE FINISH	32.0 MICROINCHES GRIP
SURFACE FINISH	32.0 MICROINCHES THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	BAC5861,CAGEC 81205 MFR REF SINGLE TREATMENT RESPONSE FASTENER
SURFACE TREATMENT	PHOSPHATE FASTENER
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.594 INCHES NOMINAL
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL JOINT FINE (UNJF)
THREAD QUANTITY PER INCH	24

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