5305-01-548-6605, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-548-6605

Federal Supply Class:
5305

National Item Identification Number:
015486605

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:

NAS1210-24D

80205

NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE

Techincal Specification:

THREAD SERIES DESIGNATOR	UNJF
NOMINAL THREAD DIAMETER	0.625 INCHES
THREAD QUANTITY PER INCH	18
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.543 INCHES NOMINAL
FASTENER LENGTH	2.028 INCHES MINIMUM AND
	2.058 INCHES MAXIMUM
MATERIAL	STEEL COMP 4140 AND
	STEEL COMP 4340 AND
	STEEL COMP 6150 AND
	STEEL COMP 8735 AND
	STEEL COMP 8740 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	AAMS6382 ASSN STD 1ST MATERIAL RESPONSE AND
	AMS6349 ASSN STD 2ND MATERIAL RESPONSE AND
	6322 ASSN STD 3RD MATERIAL RESPONSE AND
	AMS6415 ASSN STD 4TH MATERIAL RESPONSE AND
	AMS6484 ASSN STD 5TH MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416, TY2CL2 FED SPEC 1ST TREATMENT RESPONSE OR
	QQ-P-416, TY1CL2 FED SPEC 2ND TREATMENT RESPONSE OVERALL
HARDNESS RATING	36.0 ROCKWELL C MINIMUM AND
	40.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH
HEAD STYLE	FLAT COUNTERSUNK
HEAD DIAMETER	1.110 INCHES NOMINAL
COUNTERSINK ANGLE	99.0 DEGREES MINIMUM AND
	101.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE	CROSS RECESS TYPE III
GRIP LENGTH	1.500 INCHES NOMINAL
GRIP DIAMETER	0.623 INCHES MINIMUM AND
	0.624 INCHES MAXIMUM
SHANK UNTHREADED HOLE DIAMETER	0.141 INCHES MINIMUM AND
	0.151 INCHES MAXIMUM FIRST HOLE
SPECIAL FEATURES	HEAD HAS CRUCIFORM RECESS PER MS9006; CRUCIFORM DAI 0,544 TO 0,564 INCHES

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