NSN 5305-01-344-8234 M1222TY1GR400, M1222-TY1-GR400, MILDTL1222
Product Details | HEXAGON HEAD CAP SCREW
5305-01-344-8234 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: M1222TY1GR400, M1222-TY1-GR400, MILDTL1222, MIL-DTL-1222, MILS1222, MIL-S-1222, 5/8 IN. X 11 UNC-2A 2-3/4 IN. LG, 58INX11UNC2A234INLG, 5305-01-344-8234, 01-344-8234, 5305013448234, 013448234
Hardware and Abrasives | Screws
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | 06 SEP 1991 | 01-344-8234 | 18257 ( SCREW, CAP, HEXAGON HEAD ) |
Demand History | NSN 5305-01-344-8234
| 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 |
| 5305-01-344-8234 | 2023-01-30 | 100 | United States |
| 5305-01-344-8234 | 2016-06-181 | 1 | 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 |
| 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 |
| 5305-01-344-8234 | 2010-10-297 | 1 | DIBBS |
| 5305-01-344-8234 | 2009-04-117 | 1 | DIBBS |
Cross Reference | NSN 5305-01-344-8234
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 5/8 IN. X 11 UNC-2A 2-3/4 IN. LG | 80204 | AMERICAN NATIONAL STANDARDS INSTITUTE, INCORPORATED |
| M1222-TY1-GR400 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY |
| MIL-DTL-1222 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY |
| MIL-S-1222 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY |
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Technical Data | NSN 5305-01-344-8234
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.625 INCHES |
| THREAD QUANTITY PER INCH | 11 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.500 INCHES MINIMUM |
| FASTENER LENGTH | 2.650 INCHES MINIMUM AND 2.750 INCHES MAXIMUM |
| MATERIAL | NICKEL ALLOY 400 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| HARDNESS RATING | 34.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD STYLE | C1 HEXAGON |
| HEAD HEIGHT | 0.378 INCHES MINIMUM AND 0.403 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.922 INCHES MINIMUM AND 0.938 INCHES MAXIMUM |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 400 GRADE |
| MANUFACTURERS CODE | 81349 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MIL-S-1222 |
Restrictions/Controls & Freight Information | NSN 5305-01-344-8234
| 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 | 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 5305-01-344-8234
| 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 | J | NOT STOCKED, CENTRALLY PROCURED # (NON-STOCKED ITEMS) IMM/Service centrally managed but not stocked item. Procurement will be initiated only after receipt of a requisition. |
| Controlled Item Code | U | UNCLASSIFIED |
| Shelf Life Code | 0 | Nondeteriorative |



