5305-01-289-6930 SCREW,CAP,SOCKET HEAD Index 5305-01-289-6932 SCREW ASSEMBLY,PANEL

National Stock Number:
5306-01-289-6931

Federal Supply Class:
5306

National Item Identification Number:
012896931

Description:
BOLT,CLOSE TOLERANCE

Detail:
An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (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 not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see BOLT, SHEAR. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see BOLT, MACHINE.


Manufacturer Information:
10343213A486GNIMIKKEISTOKESKUS NCB FINLAND
AIA/NAS NA003680205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE
NA0036-12000680205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE
NAS0036-12000680205NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE


Techincal Specification:
EXTERNAL THREAD TOLERANCE CLASS4H6H
FASTENER LENGTH21.70 MILLIMETERS MINIMUM AND 22.30 MILLIMETERS MAXIMUM
GRIP DIAMETER11.959 MILLIMETERS MINIMUM AND 11.984 MILLIMETERS MAXIMUM
GRIP LENGTH5.80 MILLIMETERS MINIMUM AND 6.20 MILLIMETERS MAXIMUM
HEAD HEIGHT5.7 MILLIMETERS MINIMUM AND 6.0 MILLIMETERS MAXIMUM
HEAD STYLEUNDERCUT HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP E4340 OR STEEL COMP 8740 OVERALL
NOMINAL THREAD DIAMETER12.0 MILLIMETERS
SPECIFICATION/STANDARD DATA80205-NA0036 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
WIDTH BETWEEN FLATS18.67 MILLIMETERS MINIMUM AND 19.00 MILLIMETERS MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH16.0 MILLIMETERS NOMINAL
THREAD PITCH IN MILLIMETERS1.25
THREAD SERIES DESIGNATORMJ


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