5305-01-059-7405, SCREW,EXTERNALLY RELIEVED BODY

5305-01-059-7404 SCREW,EXTERNALLY RELIEVED BODY

5305-01-059-7406 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-059-7405

Federal Supply Class:
5305

National Item Identification Number:
010597405

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:

BACS12BT06-5

81205

THE BOEING COMPANY

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.492 INCHES MINIMUM AND 0.517 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	0.732 INCHES MINIMUM AND 0.752 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD	0.094 INCHES MINIMUM AND 0.097 INCHES MAXIMUM
HEAD DIAMETER	0.215 INCHES MAXIMUM
HEAD HEIGHT	0.075 INCHES MAXIMUM
HEAD STYLE	PAN
INTERNAL DRIVE STYLE	SLOT
MATERIAL	STEEL COMP 4130 OR STEEL COMP 4140 OVERALL
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.138 INCHES
SURFACE TREATMENT	CADMIUM OR CADMIUM AND CHROMATE OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.235 INCHES MINIMUM AND 0.240 INCHES MAXIMUM
THREAD QUANTITY PER INCH	32
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)

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