5305-00-550-4430, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-00-550-4430

Federal Supply Class:
5305

National Item Identification Number:
005504430

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:

11484

06650

BELL AND HOWELL PHILLIPSBURG CO CORPORATE OFFICES

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER	0.060 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.038 INCHES MINIMUM AND 0.042 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	2
FASTENER LENGTH	0.098 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.118 INCHES MINIMUM AND 0.120 INCHES MAXIMUM
HEAD HEIGHT	0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM
HEAD DIAMETER	0.250 INCHES NOMINAL
HEAD STYLE	FILLISTER
INTERNAL DRIVE STYLE	CROSS RECESS TYPE 1
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL	STEEL COMP 303 OVERALL
NOMINAL THREAD DIAMETER	0.099 INCHES
SECOND DIAMETER FROM HEAD	0.070 INCHES NOMINAL
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.038 INCHES MINIMUM
THREAD QUANTITY PER INCH	48
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)

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