Product Details | CLOSE TOLERANCE SCREW

5305-01-250-0639 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: HT4049321, HT4049-3-21, ST3M714321, ST3M714-3-21 , WC4049321, WC4049-3-21 , 5305-01-250-0639, 01-250-0639, 5305012500639, 012500639

Hardware and Abrasives | Screws

Supply Group (FSG) NSN Assign. NIIN
53 24 FEB 1987 01-250-0639

Drawings & Photos | NSN 5305-01-250-0639


Demand History | NSN 5305-01-250-0639

Part Number Request Date QTY Origin
5305-01-250-0639 2010-11-306 15 DIBBS
5305-01-250-0639 2010-08-221 5 DIBBS
5305-01-250-0639 2009-10-282 15 DIBBS

Cross Reference | NSN 5305-01-250-0639

Part Number Cage Code Manufacturer
HT4049-3-21 06950 ALCOA GLOBAL FASTENERS, INC. DBA ALCOA FASTENING SYSTEMS
HT4049-3-21 17446 HUCK INTERNATIONAL, INC. DBA ALCOA FASTENING SYSTEMS
HT4049-3-21 73197 HI-SHEAR CORPORATION
HT4049-3-21 80539 SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP
HT4049-3-21 92215 ALCOA GLOBAL FASTENERS, INC. DBA ALCOA FASTENING SYSTEMS
HT4049-3-21 97928 HUCK INTL INC
HT4049-3-21 L4528 LISI AEROSPACE CANADA CORP
ST3M714-3-21 58998 EMHART TEKNOLOGIES LLC DBA FASTENER INNOVATION TECHNOLOGY
ST3M714-3-21 60516 WEST COAST AEROSPACE INC
ST3M714-3-21 73197 HI-SHEAR CORPORATION
ST3M714-3-21 76301 BOEING COMPANY, THE DBA BOEING
ST3M714-3-21 80539 SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP
ST3M714-3-21 92215 ALCOA GLOBAL FASTENERS, INC. DBA ALCOA FASTENING SYSTEMS
ST3M714-3-21 L4528 LISI AEROSPACE CANADA CORP
WC4049-3-21 60516 WEST COAST AEROSPACE INC

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Technical Data | NSN 5305-01-250-0639

Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER 0.190 INCHES
THREAD QUANTITY PER INCH 32
THREAD CLASS 3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 0.251 INCHES MINIMUM AND 0.301 INCHES MAXIMUM
FASTENER LENGTH 1.573 INCHES MINIMUM AND 1.603 INCHES MAXIMUM
MATERIAL STEEL COMP XM-13 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT PASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HEAD STYLE C50 FLAT COUNTERSUNK
HEAD DIAMETER 0.376 INCHES MINIMUM AND 0.385 INCHES MAXIMUM
COUNTERSINK ANGLE 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE D9 HIGH-TORQUE
GRIP LENGTH 1.302 INCHES MINIMUM AND 1.322 INCHES MAXIMUM
GRIP DIAMETER 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM

Restrictions/Controls & Freight Information | NSN 5305-01-250-0639

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:AItem does not contain precious metal
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 093486 BOLTS,NUTS OR SCREWS, NOI (SUB 3)
Less than car load rating
Less than truck load rating W Rating Variable
Water commodity Code 573 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 5305-01-250-0639

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 CodesZINSURANCE/NUMERIC STOCKAGE OBJECTIVE ITEM # Items which may be required occasionally or intermittently, and prudence requires that a nominal quantity of materiel be stocked due to the essentiality or the lead time of the item. 1. The item is centrally managed, stocked, and issued. 2. Requisitions will be submitted in accordance with IMM/Service requisitioning procedures.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each