5305-01-127-1080, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-127-1080

Federal Supply Class:
5305

National Item Identification Number:
011271080

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:

1189229-8-26	05824	AEROJET ROCKETDYNE INC
122412-8-26	80539	SPS TECHNOLOGIES, LLC
HT8211-8-26	92215	HOWMET GLOBAL FASTENING SYSTEMS INC

Techincal Specification:

COUNTERSINK ANGLE	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
EXTERNAL THREAD TOLERANCE CLASS	4H
FASTENER LENGTH	43.0 MILLIMETERS NOMINAL
FEATURES PROVIDED	DRY FILM LUBRICANT
GRIP DIAMETER	7.9620 MILLIMETERS MINIMUM AND 7.9870 MILLIMETERS MAXIMUM
GRIP LENGTH	25.75 MILLIMETERS MINIMUM AND 26.25 MILLIMETERS MAXIMUM
HEAD DIAMETER	14.8 MILLIMETERS MINIMUM AND 16.0 MILLIMETERS MAXIMUM
HEAD STYLE	FLAT COUNTERSUNK
INTERNAL DRIVE STYLE	HIGH-TORQUE
MATERIAL DOCUMENT AND CLASSIFICATION	AMS5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	IRON ALLOY 660 OVERALL
III PART NAME ASSIGNED BY CONTROLLING AGENCY	NAVY SPECIAL PROJECT
PROPRIETARY CHARACTERISTICS	PACS
MINIMUM TENSILE STRENGTH	1100 MEGAPASCALS
NOMINAL THREAD DIAMETER	8.0 MILLIMETERS
SURFACE FINISH	0.8 MICROMETERS THREADS
SURFACE FINISH	0.8 MICROMETERS GRIP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	17.75 MILLIMETERS MINIMUM AND 18.25 MILLIMETERS MAXIMUM
THREAD SERIES DESIGNATOR	M
THREAD PITCH IN MILLIMETERS	1.25

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