NSN 5305-01-284-1389 MILDTL1222, MIL-DTL-1222, MILS1222

Product Details | HEXAGON HEAD CAP SCREW

5305-01-284-1389 An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. Excludes BOLT,MACHINE; BOLT,EXTERNALLY RELIEVED BODY; BOLT,INTERNAL WRENCHING; and SCREW,CAP,SOCKET HEAD.

Part Alternates: MILDTL1222, MIL-DTL-1222, MILS1222, MIL-S-1222, 1/4-20UNC-2AX1IN LG STL ZINC, 1420UNC2AX1INLGSTLZINC, 250-20UNC-2A X 1 000 IN LG, 25020UNC2AX1000INLG, 5305-01-284-1389, 01-284-1389, 5305012841389, 012841389

Hardware and Abrasives | Screws

Supply Group (FSG)	NSN Assign.	NIIN	Item Name Code (INC)
53	18 AUG 1988	01-284-1389	18257 ( SCREW, CAP, HEXAGON HEAD )

Drawings & Photos | NSN 5305-01-284-1389

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
5305-01-284-1389	2023-03-88	1553	DIBBS
5305-01-284-1389	2020-03-91	1445	DIBBS
5305-01-284-1389	2020-02-43	1488	DIBBS
5305-01-284-1389	2020-01-08	951	DIBBS
5305-01-284-1389	2019-12-349	951	DIBBS
5305-01-284-1389	2016-10-299	483	DIBBS
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
5305-01-284-1389	2012-04-97	738	DIBBS
MILS1222	2012-03-74	1	US
5305-01-284-1389	2011-12-349	328	DIBBS
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 5305-01-284-1389

Part Number	Cage Code	Manufacturer
1/4-20UNC-2AX1IN LG STL ZINC	80204	AMERICAN NATIONAL STANDARDS INSTITUTE, INCORPORATED
250-20UNC-2A X 1 000 IN LG	80204	AMERICAN NATIONAL STANDARDS INSTITUTE, INCORPORATED
MIL-DTL-1222	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY
MIL-S-1222	81349	MILITARY SPECIFICATIONS PROMULGATED BY MILITARY

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Related Products | NSN 5305-01-284-1389

5305-01-284-1391, 5305-01-284-1392, 5305-01-284-1394, 5305-01-284-1395, 5305-01-284-1396

Technical Data | NSN 5305-01-284-1389

Characteristic	Specifications
THREAD SERIES DESIGNATOR	UNC
NOMINAL THREAD DIAMETER	0.250 INCHES
THREAD QUANTITY PER INCH	20
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	0.870 INCHES MINIMUM AND 1.000 INCHES MAXIMUM
FASTENER LENGTH	0.970 INCHES MINIMUM AND 1.000 INCHES MAXIMUM
MATERIAL	STEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	SAE J429 GR 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	ZINC AND CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	ASTM B633 TY 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING	23.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH	120000 POUNDS PER SQUARE INCH
HEAD STYLE	C1 HEXAGON
HEAD HEIGHT	0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM
WIDTH BETWEEN FLATS	0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
FEATURES PROVIDED	FINISHED HEAD
NONDEFINITIVE SPEC/STD DATA	1 TYPE AND 5 GRADE
MANUFACTURERS CODE	81349
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE	MIL-S-1222

Restrictions/Controls & Freight Information | NSN 5305-01-284-1389

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	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 5305-01-284-1389

Air Force
Navy

Category	Code	Description
Budget Code	9	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 Validation	N	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 Code	SF	Stock fund applicable to items managed for the Air Force by the respective Inventory Control Point.
Materiel Management Aggregation Code	SX	SX:AF SICA RESIDUAL MMAC-OC-ALC
Source of Supply	SMS	Defense Logistics Agency Enterprise Business Systems
Agency	DF	Department of the Air Force
Service Organization	F	U.S. Air Force
Reparability	N	Stock Fund (except Munitions)
Acquisition Advice Codes	D	DoD INTEGRATED MATERIEL-MANAGED, STOCKED, AND ISSUED # Issue, transfer, or shipment is not subject to specialized controls other than those imposed by the Integrated Materiel Manager/Service supply policy. 1. The item is centrally managed, stocked, and issued. 2. Requisitions must contain the fund citation required to acquire the item. Requisitions will be submitted in accordance with Integrated Materiel Manager(IMM)/Service requisitioning procedures.
Controlled Item Code	U	UNCLASSIFIED
Shelf Life Code	0	Nondeteriorative
Purchasing	QTY UOM	1 BX : Box

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	D	DoD INTEGRATED MATERIEL-MANAGED, STOCKED, AND ISSUED # Issue, transfer, or shipment is not subject to specialized controls other than those imposed by the Integrated Materiel Manager/Service supply policy. 1. The item is centrally managed, stocked, and issued. 2. Requisitions must contain the fund citation required to acquire the item. Requisitions will be submitted in accordance with Integrated Materiel Manager(IMM)/Service requisitioning procedures.
Controlled Item Code	U	UNCLASSIFIED
Shelf Life Code	0	Nondeteriorative
Purchasing	QTY UOM	1 BX : Box