Product Details | SOCKET HEAD CAP SCREW

5305-01-387-0539 An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW, SHOULDER; and SCREW, MACHINE.

Part Alternates: MILDTL1222, MIL-DTL-1222, MILS1222, MIL-S-1222, 264393053FNA30, 2643-930-53FNA30, 8016641190FNA30, 801-6641190FNA30, 5305-01-387-0539, 01-387-0539, 5305013870539, 013870539

Hardware and Abrasives | Screws

Supply Group (FSG) NSN Assign. NIIN
53 24 FEB 1994 01-387-0539

Drawings & Photos | NSN 5305-01-387-0539


Demand History | NSN 5305-01-387-0539

Part Number Request Date QTY Origin
MILDTL1222 2025-03-72 40 United States
MILDTL1222 2025-02-49 40 United States
MILS1222 2025-01-22 8 United States
MILS1222 2025-01-22 8 United States
MILDTL1222 2023-06-159 12 United States
MILS1222 2015-03-89 3000 BH
MILS1222 2014-08-230 1 US
MILDTL1222 2013-06-169 59 US
MILS1222 2012-07-209 4 United States
MILS1222 2012-03-74 1 US
MILS1222 2011-02-49 3 US
MILS1222 2011-02-49 4 US
MILS1222 2011-02-49 5 US
MILS1222 2011-02-49 10 US
MILS1222 2011-02-49 18 US
MILS1222 2011-02-49 35 US
MILS1222 2011-02-49 40 US
MILS1222 2011-02-49 42 US
MILS1222 2011-02-49 185 US
MILS1222 2011-02-49 195 US

Cross Reference | NSN 5305-01-387-0539

Part Number Cage Code Manufacturer
2643-930-53FNA30 96169 ELECTRIC BOAT CORPORATION
801-6641190FNA30 53711 NAVAL SEA SYSTEMS COMMAND
MIL-DTL-1222 81349 MILITARY SPECIFICATIONS PROMULGATED BY MILITARY
MIL-S-1222 81349 MILITARY SPECIFICATIONS PROMULGATED BY MILITARY

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Technical Data | NSN 5305-01-387-0539

Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER 0.375 INCHES
THREAD QUANTITY PER INCH 16
THREAD CLASS 3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 0.875 INCHES MINIMUM AND 1.000 INCHES MAXIMUM
FASTENER LENGTH 1.000 INCHES NOMINAL
MATERIAL PLASTIC ACETAL LOCKING FEATURE STEEL COMP 630 FASTENER
MATERIAL DOCUMENT AND CLASSIFICATION ASTM A564 ASSN STD SINGLE MATERIAL RESPONSE OVERALL MIL-F-18240 MIL SPEC SINGLE MATERIAL RESPONSE LOCKING FEATURE ASTM A564 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
SURFACE TREATMENT LUBRICANT OVERALL LUBRICANT FASTENER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION MIL-L-24479, FN 45 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL MIL-L-24479, FN 45 MIL SPEC SINGLE TREATMENT RESPONSE FASTENER
HARDNESS RATING 28.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH 135000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH 105000 POUNDS PER SQUARE INCH
HEAD STYLE C49 FLAT CHAMFER
HEAD DIAMETER 0.550 INCHES MINIMUM AND 0.562 INCHES MAXIMUM
HEAD HEIGHT 0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM
INTERNAL DRIVE STYLE D5 HEXAGON
WIDTH ACROSS FLATS 0.312 INCHES NOMINAL
LOCKING FEATURE PATCH OR PELLET OR STRIP THREADS
SPECIAL FEATURES AGE HARDEN TO 1075 DEGREES
NONDEFINITIVE SPEC/STD DATA 2 TYPE AND 630 GRADE
MANUFACTURERS CODE 81349
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE MIL-S-1222

Restrictions/Controls & Freight Information | NSN 5305-01-387-0539

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.
Automatic Data Processing Equipment:0Represents items with no ADP components. NOTE: Codes 1 through 6 are only to be used when the item is Automatic Data Processing Equipment (ADPE) in its entirety and is limited to the type meeting only one of the definitions for codes 1 through 6. (See code 9)
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 5305-01-387-0539

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