Product Details | HEXAGON SLOTTED SELF-LOCKING NUT

5310-00-728-2026 A nut having a flat bearing surface and 6 flat sides with slots in its upper portion. An integral feature is incorporated for locking on the threads of a mating member. The slots, when used in conjunction with a solid or split (cotter) pin, act as an extra "fail safe", feature in critical applications. Excludes NUT (1), SELF-LOCKING, CASTELLATED, OCTAGON.

Part Alternates: 12561346, 50FKF813, 50FKF-813, 5310-00-728-2026, 00-728-2026, 5310007282026, 007282026

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 01 JAN 1961 00-728-2026

Drawings & Photos | NSN 5310-00-728-2026


Demand History | NSN 5310-00-728-2026

Part Number Request Date QTY Origin
50FKF813 2017-03-28 6 United States
5310-00-728-2026 2013-07-31 129 DIBBS
5310-00-728-2026 2013-07-09 14 DIBBS
5310-00-728-2026 2013-06-07 25 DIBBS
50FKF813 2012-11-16 700 United States
50FKF813 2012-11-05 50 BE

Cross Reference | NSN 5310-00-728-2026

Part Number Cage Code Manufacturer
12561346 19200 US ARMY ARDEC RDECOM
50FKF-813 D9182 BOSCH REXROTH GMBH LOHMANN +STOLTERFOHT
50FKF813 56878 SPS TECHNOLOGIES, LLC DBA AEROSPACE DIVISION

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Technical Data | NSN 5310-00-728-2026

Characteristic Specifications
THREAD SERIES UNC
NOMINAL THREAD SIZE 0.500 INCHES
THREAD QUANTITY PER INCH 13
THREAD CLASS 2B
THREAD DIRECTION RIGHT-HAND
MATERIAL STEEL CORROSION RESISTING OVERALL
SURFACE TREATMENT PASSIVATE OVERALL
HARDNESS RATING NOT RATED
NUT STYLE A17 SLOTTED, HEXAGON
NUT HEIGHT 0.308 INCHES MINIMUM AND 0.328 INCHES MAXIMUM
WIDTH ACROSS FLATS 0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM
BEARING SURFACE TYPE WASHER FACED
LOCKING FEATURE PREVAILING TORQUE ALL METAL DESIGN
TEMP RATING 800.0 DEG FAHRENHEIT NOMINAL

Restrictions/Controls & Freight Information | NSN 5310-00-728-2026

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 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 XX
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 5310-00-728-2026

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 CodesVTERMINAL ITEM # Identifies items in stock, but future procurement is not authorized. Requisitions may continue to be submitted until stocks are exhausted. Preferred item National Stock Number is normally provided by application of the phrase: When Exhausted Use (NSN). Requisitions will be submitted in accordance with IMM/Service requisitioning procedures as applicable.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Category Code Description
Budget Code9 General Support DIV57X4921.070:Air Force decentrally managed expense items (ERRC XB3, XF-3) with a unit cost of less than $250,000 that are requisitioned/procured at base (retail) level from DLA, GSA, Army, Navy, Depot Maintenance Service, Air Force Industrial Fund (AFMC), local manufacture and commercial vendors.
Price ValidationN The current standard price in Catalog Management Data (CMD) has not analyzed or coded for LP/LM.
  • The price has not been analyzed or reviewed for accuracy.
  • ZOP or Standard price challenges are permissible, but must be supported with adequate justification. However, if coded for Local Purchase (LP) or Fabrication/Manufacture as indicated with an (LM) Acquisition Advice Code of ?L? or?F?,the case must be evaluated locally where purchased or fabricated.
Fund CodeSFStock fund applicable to items managed for the Air Force by the respective Inventory Control Point.
Materiel Management Aggregation CodeSXSX:AF SICA RESIDUAL MMAC-OC-ALC
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDFDepartment of the Air Force
Service OrganizationFU.S. Air Force
ReparabilityNStock Fund (except Munitions)
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