NSN 5310-01-451-4219 M1222N1X20C20GFLN, MILDTL1222, MIL-DTL-1222

Product Details | HEXAGON SELF-LOCKING NUT

5310-01-451-4219 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: M1222N1X20C20GFLN, MILDTL1222, MIL-DTL-1222, MILS1222, MIL-S-1222, 5210547 PART 9, 5210547PART9, 5310-01-451-4219, 01-451-4219, 5310014514219, 014514219

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG)	NSN Assign.	NIIN	Item Name Code (INC)
53	16 DEC 1997	01-451-4219	05277 ( NUT, SELF-LOCKING, HEXAGON )

Drawings & Photos | NSN 5310-01-451-4219

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
5310-01-451-4219	2020-03-79	13	DIBBS
5310-01-451-4219	2018-09-262	20	DIBBS
5310-01-451-4219	2018-04-102	18	DIBBS
5310-01-451-4219	2017-01-30	13	DIBBS
MILS1222	2015-03-89	3000	BH
5310-01-451-4219	2014-11-310	27	DIBBS
5310-01-451-4219	2014-10-299	27	DIBBS
MILS1222	2014-08-230	1	US
5310-01-451-4219	2014-03-67	26	DIBBS
5310-01-451-4219	2013-08-213	28	DIBBS
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 5310-01-451-4219

Part Number	Cage Code	Manufacturer
5210547 PART 9	53711	NAVAL SEA SYSTEMS COMMAND
M1222N1X20C20GFLN	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY
MIL-DTL-1222	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY
MIL-S-1222	81348	FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES

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Related Products | NSN 5310-01-451-4219

5310-01-451-4241, 5310-01-451-4413, 5310-01-451-4470, 5310-01-451-4933, 5310-01-451-5039

Technical Data | NSN 5310-01-451-4219

Characteristic	Specifications
THREAD SERIES	UNC
NOMINAL THREAD SIZE	1.250 INCHES
THREAD QUANTITY PER INCH	7
THREAD CLASS	2B
THREAD DIRECTION	RIGHT-HAND
MATERIAL	STEEL OVERALL
HARDNESS RATING	NOT RATED
NUT STYLE	A12 HEXAGON
NUT HEIGHT	1.030 INCHES MINIMUM AND 1.094 INCHES MAXIMUM
WIDTH ACROSS FLATS	1.812 INCHES MINIMUM AND 1.875 INCHES MAXIMUM
BEARING SURFACE TYPE	CHAMFERED OR WASHER FACED
LOCKING FEATURE	PREVAILING TORQUE ALL METAL DESIGN
TEMP RATING	NOT RATED
NONDEFINITIVE SPEC/STD DATA	1 TYPE OR 5 GRADE
MANUFACTURERS CODE	81348
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	MIL-S-1222

Restrictions/Controls & Freight Information | NSN 5310-01-451-4219

Restrictions
Freight

Category	Code	Description
Shelf-Life Code:	0	Nondeteriorative
Hazardous Material Indicator Code	N	There is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:	A	Non-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Controlled Inventory Item Code:	U	UNCLASSIFIED
Precious Metals Indicator Code:	A	Item 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:	0	Represents 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	093486	BOLTS,NUTS OR SCREWS, NOI (SUB 3)
Less than car load rating
Less than truck load rating	W	Rating Variable
Water commodity Code	576	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 5310-01-451-4219

Navy

Category	Code	Description
Cognizance Codes	9B	Navy-owned stocks of DLA material Naval Inventory Control Point, Mechanicsburg
Source of Supply	SMS	Defense Logistics Agency Enterprise Business Systems
Agency	DN	Department of the Navy
Service Organization	N	U.S. Navy
Acquisition Advice Codes	Z	INSURANCE/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 Code	U	UNCLASSIFIED
Shelf Life Code	0	Nondeteriorative