Product Details | EXTERNALLY RELIEVED BODY SCREW

5305-00-649-6994 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.

Part Alternates: 9084859, 5305-00-649-6994, 00-649-6994, 5305006496994, 006496994

Hardware and Abrasives | Screws

Supply Group (FSG) NSN Assign. NIIN
53 01 JAN 1963 00-649-6994

Drawings & Photos | NSN 5305-00-649-6994


Cross Reference | NSN 5305-00-649-6994

Part Number Cage Code Manufacturer
9084859 18876 U S ARMY AVIATION AND MISSILE COMMAND

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Technical Data | NSN 5305-00-649-6994

Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER 0.138 INCHES
THREAD QUANTITY PER INCH 32
THREAD CLASS 2A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 0.172 INCHES MINIMUM
MATERIAL STEEL COMP 303 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT PASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION MIL-STD-171 FINISH NO. 5 4,1 MIL STD SINGLE TREATMENT RESPONSE OVERALL
HEAD STYLE C49 FLAT CHAMFER
HEAD DIAMETER 0.312 INCHES NOMINAL
HEAD HEIGHT 0.094 INCHES NOMINAL
INTERNAL DRIVE STYLE D14 SLOT
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY 3
FIRST DIAMETER FROM HEAD 0.203 INCHES MINIMUM AND 0.221 INCHES MAXIMUM
SECOND DIAMETER FROM HEAD 0.215 INCHES MINIMUM AND 0.225 INCHES MAXIMUM
THIRD DIAMETER FROM HEAD 0.099 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER 0.031 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER 0.046 INCHES MINIMUM AND 0.051 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER 0.078 INCHES NOMINAL
MANUFACTURERS CODE 18876
DESIGN CONTROL REFERENCE 9084859

Restrictions/Controls & Freight Information | NSN 5305-00-649-6994

Category Code Description
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
No Freight Information