5305-01-111-9153, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-111-9153

Federal Supply Class:
5305

National Item Identification Number:
011119153

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:

AS221-04-0845

84256

AVIBANK MFG., INC.

Techincal Specification:

COUNTERSINK ANGLE	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
FASTENER LENGTH	1.475 INCHES MINIMUM AND 1.495 INCHES MAXIMUM
GRIP DIAMETER	0.2480 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM
GRIP LENGTH	0.835 INCHES MINIMUM AND 0.855 INCHES MAXIMUM
HEAD DIAMETER	0.449 INCHES MINIMUM AND 0.507 INCHES MAXIMUM
HEAD STYLE	FLAT COUNTERSUNK
INTERNAL DRIVE STYLE	OFFSET CRUCIFORM (TORQUE SET)
LOCKING FEATURE	DETENT BALL GRIP
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5673 ASSN STD SINGLE MATERIAL RESPONSE OR QQ-W-423 FED SPEC SINGLE MATERIAL RESPONSE SPRING
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE LOCKING FEATURE
MATERIAL	STEEL COMP 440C LOCKING FEATURE
MATERIAL	STEEL COMP 631 OR STEEL COMP 302 SPRING
MATERIAL	STEEL COMP XM-13 FASTENER
NOMINAL THREAD DIAMETER	0.250 INCHES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OR FPS-3007, CAGE84256 MFR REF SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.540 INCHES MINIMUM AND 0.570 INCHES MAXIMUM
THREAD SERIES DESIGNATOR	UNF
THREAD QUANTITY PER INCH	28

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