5305-00-638-5031, SCREW,EXTERNALLY RELIEVED BODY

5305-00-638-5039 SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-00-638-5031

Federal Supply Class:
5305

National Item Identification Number:
006385031

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:

E1622M1-1	06950	HOWMET GLOBAL FASTENING SYSTEMS INC
E1622M1-1	81039	WHIPPANY ACTUATION SYSTEMS, LLC
EAB1722	81996	U S ARMY AVIATION AND MISSILE COMMAND

Techincal Specification:

DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	1.200 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FASTENER LENGTH	2.200 INCHES NOMINAL
FIRST DIAMETER FROM HEAD	0.113 INCHES MINIMUM AND 0.123 INCHES MAXIMUM
HARDNESS RATING	20.0 ROCKWELL C MINIMUM AND 24.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER	0.208 INCHES MINIMUM AND 0.226 INCHES MAXIMUM
HEAD HEIGHT	0.085 INCHES MINIMUM AND 0.093 INCHES MAXIMUM
HEAD STYLE	FILLISTER
INTERNAL DRIVE STYLE	CROSS RECESS TYPE 1
MATERIAL	STEEL COMP 8740 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL
NOMINAL THREAD DIAMETER	0.138 INCHES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416 TYPE 2,CLASS 2 FED SPEC 1ST TREATMENT RESPONSE AND MIL-P-6871 TYPE 2,CLASS A MIL SPEC 2ND TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM AND CHROMATE AND CHROMIUM OVERALL
THREAD CLASS	3A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	1.000 INCHES MINIMUM
THREAD QUANTITY PER INCH	32
THREAD SERIES DESIGNATOR	UNC

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