5305-01-453-9421, SCREW,EXTERNALLY RELIEVED BODY

National Stock Number:
5305-01-453-9421

Federal Supply Class:
5305

National Item Identification Number:
014539421

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:

KTT83B	02750	EATON AEROSPACE LLC
KTT83B	06RP6	DRS NAVAL POWER SYSTEMS INC
LL-HX9-7138	14153	DEFENSE LOGISTICS AGENCY DBA DEFENSE SUPPLY CENTER PHILADELPHIA
PO0296NRP	14153	DEFENSE LOGISTICS AGENCY DBA DEFENSE SUPPLY CENTER PHILADELPHIA
LO-014539421	16236	DLA LAND AND MARITIME DBA ENGINEERING AND TECHNICAL SUPPORT DIV DOCUMENT STANDARDIZATION DIVISION (VENDOR ITEM DRAWINGS)

Techincal Specification:

THREAD SERIES DESIGNATOR	M
NOMINAL THREAD DIAMETER	2.5 MILLIMETERS
THREAD PITCH IN MILLIMETERS	0.45
EXTERNAL THREAD TOLERANCE CLASS	6G
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.202 INCHES NOMINAL
FASTENER LENGTH	0.475 INCHES NOMINAL
MATERIAL	IRON ALLOY 660 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5734 ASSN STD SINGLE MATERIAL RESPONSE OR
	AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35, TY II FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HEAD STYLE	KNURLED NO. 5
HEAD DIAMETER	0.198 INCHES NOMINAL
HEAD HEIGHT	0.190 INCHES NOMINAL
INTERNAL DRIVE STYLE	SLOT
POINT STYLE	CONE
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY	1
FIRST DIAMETER FROM HEAD	0.072 INCHES MINIMUM AND
	0.076 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER	0.273 INCHES NOMINAL
SPECIAL FEATURES	ITEM MUST COMPLY WITH REQUIREMENTS OF DEFENSE SUPPLY CENTER COLUMBUS PRODUCTION STANDARD NO. LO-014539421.
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS	REFERENCE NUMBER DIFFERENTIATING MATERIAL WILL BE IN ACCORDANCE WITH NAVAL INVENTORY CONTROL POINT ACTIVITY HX QUALITY CONTROL. MANUFACTURING AND TESTING SPECIFICATION AVAILABLE AT THE DLA ICP
CRITICALITY CODE JUSTIFICATION	ZZZY
THE MANUFACTURERS DATA
MANUFACTURERS CODE	06RP6
DESIGN CONTROL REFERENCE	KTT83B

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