5305-12-348-1480, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-12-348-1480

Federal Supply Class:
5305

National Item Identification Number:
123481480

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:

DIN7968-M22X55-5.6-A3P

D8286

DIN DEUTSCHES INSTITUT FUER NORMUNGEV

Techincal Specification:

EXTERNAL THREAD TOLERANCE CLASS	8 KLEIN G
FASTENER LENGTH	55.0 MILLIMETERS NOMINAL
GRIP DIAMETER	23.0 MILLIMETERS NOMINAL
GRIP LENGTH	23.0 MILLIMETERS NOMINAL
HARDNESS RATING	155 VICKERS OR FIRTH DIAMOND PYRAMID MINIMUM OVERALL AND 250 VICKERS OR FIRTH DIAMOND PYRAMID MAXIMUM OVERALL
HEAD HEIGHT	14.0 MILLIMETERS NOMINAL
HEAD STYLE	HEXAGON
INTERNAL DRIVE STYLE	W/O INTERNAL DRIVE
MATERIAL DOCUMENT AND CLASSIFICATION	ISO898-1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL OVERALL
MINIMUM TENSILE STRENGTH	500 NEWTONS PER SQUARE MILLIMETER
MINIMUM YIELD STRENGTH	300 NEWTONS PER SQUARE MILLIMETER
NOMINAL THREAD DIAMETER	22.0 MILLIMETERS
PURCHASE DESCRIPTION IDENTIFICATION	D8286-DIN7968-M22X55-5.6-A3P
WIDTH BETWEEN FLATS	34.0 MILLIMETERS NOMINAL
STRENGTH GRADE DESIGNATION	5.6
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	DIN ISO4042, SCHLUESSEL A3P ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	ZINC OVERALL
TEST DATA DOCUMENT	D8286-DIN7968 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.).
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	25.75 MILLIMETERS NOMINAL
THREAD SERIES DESIGNATOR	ISO M
THREAD PITCH IN MILLIMETERS	2.5

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