Product Details | HEXAGON SELF-LOCKING NUT

5310-01-503-6752 A nut having a flat bottom and 6 sides. An integral feature is incorporated for locking on the threads of a mating member. Excludes NUT (1), SELF-LOCKING, CAP.

Part Alternates: M45913/2-6FS3, M4591326FS3, MIL-DTL-45913/2, MILDTL459132, 5310-01-503-6752, 01-503-6752, 5310015036752, 015036752

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 03 JAN 2003 01-503-6752

Drawings & Photos | NSN 5310-01-503-6752


Demand History | NSN 5310-01-503-6752

Part Number Request Date QTY Origin
MILDTL459132 2025-06-154 252 United States
5310-01-503-6752 2019-03-77 6 United States
5310-01-503-6752 2018-10-278 50 United States
5310-01-503-6752 2018-09-264 113 DIBBS
5310-01-503-6752 2018-09-256 113 DIBBS
5310-01-503-6752 2015-10-277 42 DIBBS
5310-01-503-6752 2015-08-236 34 DIBBS
MILDTL459132 2013-11-318 240 US
5310-01-503-6752 2013-05-128 50 DIBBS
5310-01-503-6752 2013-04-98 50 DIBBS
M4591326FS3 2010-07-208 510 United States

Cross Reference | NSN 5310-01-503-6752

Part Number Cage Code Manufacturer
M45913/2-6FS3 81349 MILITARY SPECIFICATIONS PROMULGATED BY MILITARY
MIL-DTL-45913/2 81349 MILITARY SPECIFICATIONS PROMULGATED BY MILITARY

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Technical Data | NSN 5310-01-503-6752

Characteristic Specifications
THREAD SERIES UNF
NOMINAL THREAD SIZE 0.375 INCHES
THREAD QUANTITY PER INCH 24
THREAD CLASS 2B
THREAD DIRECTION RIGHT-HAND
MATERIAL STEEL COMP 303 OVERALL
HARDNESS RATING NOT RATED
NUT STYLE A12 HEXAGON
NUT HEIGHT 0.320 INCHES MINIMUM AND 0.415 INCHES MAXIMUM
WIDTH ACROSS FLATS 0.551 INCHES MINIMUM AND 0.564 INCHES MAXIMUM
BEARING SURFACE TYPE CHAMFERED OR WASHER FACED
LOCKING FEATURE PREVAILING TORQUE ALL METAL DESIGN
TEMP RATING 250.0 DEG FAHRENHEIT NOMINAL
III BEARING SURFACE FINISH 125.0 MICROINCHES
III END ITEM IDENTIFICATION MK97MOD0,MOUN
MANUFACTURERS CODE 81349
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE MIL-DTL-45913/2
MANUFACTURERS CODE 81349
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE M45913/2-6FS3

Restrictions/Controls & Freight Information | NSN 5310-01-503-6752

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 5310-01-503-6752

Category Code Description
Materiel Category and Inventory ManagerT Industrial Supplies (DLA/GSA Items)
Appropriation and Budget Activity2 Stock Fund Secondary Items
Management Inventory Segment2 NONREPARABLE ITEMS (Exclusive of Insurance and Provisioning Items). This code will be used to identify items which are not reparable.
Specific Group/Generic Code0 Medical Materiel
Weapons Systems/End Item or Homogeneous Group00DLA/GSA-Managed Items that cannot be identified to a specific Army Weapons Systems/End Item
Accounting Requirements CodeX Expendable item. An item of Army property coded with an ARC of ?X? in the AMDF. Expendable items require no formal accountability after issue from a stock record account. Commercial and fabricated items similar to items coded ?X? in the AMDF are considered expendable items.
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDADepartment of the Army
Service OrganizationAU.S. Army
ReparabilityZThis is a nonreparable item. If condemned or economically unserviceable, then dispose at the level authorized replace the item.
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
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