Product Details | SERRATED LOCK RING

5365-00-218-4929 A locking device which is serrated on the inside and outside diameters. It may have outer serrations omitted on one or two sides for close edge installation. The inner serrations engage the mating serrations of bolts, inserts, nuts, studs or similar items to be locked in place. The outer serrations broach their way into parent material when driven or pressed into place.

Part Alternates: MS51990, MS51990113P, MS51990-113P, AA59558, A-A-59558, AA59558112, AA59558-112, AS51990, RLRR82SB12, 5365-00-218-4929, 00-218-4929, 5365002184929, 002184929

Hardware and Abrasives | Bushings, Rings, Shims, and Spacers

Supply Group (FSG) NSN Assign. NIIN
53 09 MAY 1973 00-218-4929

Demand History | NSN 5365-00-218-4929

Part Number Request Date QTY Origin
MS51990 2025-08-216 76 United States
5365-00-218-4929 2019-05-137 36 DIBBS
5365-00-218-4929 2019-05-128 36 DIBBS
MS51990113P 2007-09-246 4 JP

Cross Reference | NSN 5365-00-218-4929

Part Number Cage Code Manufacturer
A-A-59558 58536 FEDERAL COMMERCIAL ITEM DESCRIPTION PROMULGATED BY GENERAL SERVICES
AA59558-112 58536 FEDERAL COMMERCIAL ITEM DESCRIPTION PROMULGATED BY GENERAL SERVICES
AS51990 81343 SOCIETY OF AUTOMOTIVE ENGINEERS INC
MS51990 96906 MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS
MS51990-113P 81343 SOCIETY OF AUTOMOTIVE ENGINEERS INC
MS51990-113P 96906 MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS
RLRR82SB12 83324 ALCOA GLOBAL FASTENERS, INC. DBA ALCOA FASTENING SYSTEMS

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Technical Data | NSN 5365-00-218-4929

Characteristic Specifications
MATERIAL STEEL, FED STD 66, AISI/SAE 1117
SURFACE TREATMENT CADMIUM, QQ-P-416, TYPE 2, CLASS 3
OVERALL OUTSIDE DIAMETER 1.322 INCHES MINIMUM AND 1.331 INCHES MAXIMUM
INSIDE DIAMETER 0.032 INCHES MINIMUM AND 0.039 INCHES MAXIMUM
OVERALL HEIGHT 0.193 INCHES NOMINAL
PILOT DIAMETER 1.232 INCHES NOMINAL
OUTER SERRATION QUANTITY ANY ACCEPTABLE
INNER SERRATION QUANTITY 36
SIDE OUTER SERRATIONS OMITTED FOR CLOSE EDGE INSTALLATION TWO SIDES
MANUFACTURERS CODE 58536
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE A-A-59558
MANUFACTURERS CODE 58536
DEFINITIVE GOVERNMENT SPEC/STD REFERENCE AA59558-112

Restrictions/Controls & Freight Information | NSN 5365-00-218-4929

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 095190 HARDWARE, NOI SUB 9
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 5365-00-218-4929

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