5305-01-444-6158, SCREW,EXTERNALLY RELIEVED BODY

1560-01-444-6157 PLATE,STRUCTURAL,AIRCRAFT

5305-01-444-6159 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-444-6158

Federal Supply Class:
5305

National Item Identification Number:
014446158

Description:
SCREW,EXTERNALLY RELIEVED BODY

Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercut for thread relief). It is No. 0 (0.060 IN.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below No. 10 (0.190 IN.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and multiple spline types) but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. See also BOLT, EXTERNALLY RELIEVED BODY and BOLT, INTERNAL WRENCHING.

Manufacturer Information:

7370018-3	19133	MCDONNELL DOUGLAS CORP MCDONNELL DOUGLAS AEROSPACE OPNS WEST
7370018-3	76301	THE BOEING COMPANY

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	1.125 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	1.000 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.078 INCHES MINIMUM AND 0.082 INCHES MAXIMUM
HARDNESS RATING	33.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER	0.176 INCHES MINIMUM AND 0.183 INCHES MAXIMUM
HEAD HEIGHT	0.108 INCHES MINIMUM AND 0.112 INCHES MAXIMUM
HEAD STYLE	FLAT CHAMFER
INTERNAL DRIVE STYLE	HEXAGON
MATERIAL DOCUMENT AND CLASSIFICATION	AMS5731 ASSN STD 1ST MATERIAL RESPONSE OR AMS5737 ASSN STD 2ND MATERIAL RESPONSE OVERALL
MATERIAL	IRON ALLOY 660 OVERALL
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH	120000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.112 INCHES
SPECIAL FEATURES	ALTERED ITEM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35,TYPE II FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.250 INCHES NOMINAL
THREAD QUANTITY PER INCH	40
THREAD SERIES DESIGNATOR	UNRC
WIDTH ACROSS FLATS	0.937 INCHES MINIMUM AND 0.957 INCHES MAXIMUM

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