Product Details | CLOSE TOLERANCE SCREW

5305-01-337-5991 A SCREW, MACHINE or SCREW, CAP, SOCKET HEAD whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 IN.) (0.025 mm) or less of a specific diameter for items (1.000 IN.) (25 mm) or less in diameter. Items over (1.000 IN.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 IN.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 IN.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the Screw Thread Standards, FED STD H28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.

Part Alternates: BACB30MS7R16, 5305-01-337-5991, 01-337-5991, 5305013375991, 013375991

Hardware and Abrasives | Screws

Supply Group (FSG) NSN Assign. NIIN
53 18 APR 1991 01-337-5991

Drawings & Photos | NSN 5305-01-337-5991


Cross Reference | NSN 5305-01-337-5991

Part Number Cage Code Manufacturer
BACB30MS7R16 17446 HUCK INTERNATIONAL, INC. DBA ALCOA FASTENING SYSTEMS
BACB30MS7R16 56878 SPS TECHNOLOGIES, LLC DBA AEROSPACE DIVISION
BACB30MS7R16 73197 HI-SHEAR CORPORATION
BACB30MS7R16 80539 SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP
BACB30MS7R16 81205 THE BOEING COMPANY DBA BOEING
BACB30MS7R16 92215 ALCOA GLOBAL FASTENERS, INC. DBA ALCOA FASTENING SYSTEMS
BACB30MS7R16 97928 HUCK INTL INC
BACB30MS7R16 L4528 LISI AEROSPACE CANADA CORP

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Technical Data | NSN 5305-01-337-5991

Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER 0.438 INCHES
THREAD QUANTITY PER INCH 20
THREAD CLASS 3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 0.694 INCHES NOMINAL
FASTENER LENGTH 1.679 INCHES MINIMUM AND 1.709 INCHES MAXIMUM
MATERIAL TITANIUM ALLOY UNS R56400 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT PHOSPHATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION BAC 5861,CAGE81205 MFR REF SINGLE TREATMENT RESPONSE OVERALL
HEAD STYLE C50 FLAT COUNTERSUNK
HEAD DIAMETER 0.829 INCHES MINIMUM AND 0.892 INCHES MAXIMUM
COUNTERSINK ANGLE 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE D9 HIGH-TORQUE
GRIP LENGTH 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM
GRIP DIAMETER 0.4360 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM
SURFACE FINISH 63.0 MICROINCHES BEARING SURFACE OF HEAD 32.0 MICROINCHES GRIP 32.0 MICROINCHES THREADS
SPECIAL FEATURES RED DYE OR PAINT ON THREAD END BEFORE LUBRICATION

Restrictions/Controls & Freight Information | NSN 5305-01-337-5991

Category Code Description
Shelf-Life Code:0Nondeteriorative
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.
Controlled Inventory Item Code:UUNCLASSIFIED
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
NMF Description 096640 SCREWS, IRON OR STEEL
Less than car load rating
Less than truck load rating Q 70.0
Water commodity Code 713 unknown
Originating Activity Code KZ Defense Supply Center Philadelphia
Philadelphia, PA 19101
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity B Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials.
Air Special Handling Z No special handling required.
Special Handling Code 9 unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable

Management | NSN 5305-01-337-5991

Category Code Description
Cognizance Codes9BNavy-owned stocks of DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
Acquisition Advice CodesJNOT STOCKED, CENTRALLY PROCURED # (NON-STOCKED ITEMS) IMM/Service centrally managed but not stocked item. Procurement will be initiated only after receipt of a requisition.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative