NSN 5306-00-206-4931 AN43A, AN4-3A, MILB6812
Product Details | MACHINE BOLT
5306-00-206-4931 An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, BOLT, SHEAR. See also SCREW, CAP, HEXAGON HEAD and SCREW, MACHINE.
Part Alternates: AN43A, AN4-3A, MILB6812, MIL-B-6812, 8175043, 5306-00-206-4931, 00-206-4931, 5306002064931, 002064931
Hardware and Abrasives | Bolts
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | 06 FEB 1985 | 00-206-4931 | 01847 ( BOLT, MACHINE ) |
Drawings & Photos | NSN 5306-00-206-4931
Demand History | NSN 5306-00-206-4931
| Part Number | Request Date | QTY | Origin |
|---|---|---|---|
| AN43A | 2025-09-254 | 1000 | US |
| 5306-00-206-4931 | 2025-06-165 | 43 | AE |
| AN43A | 2024-10-277 | 200 | US |
| 5306-00-206-4931 | 2023-03-66 | 25 | DIBBS |
| AN43A | 2021-10-300 | 350 | us |
| 5306-00-206-4931 | 2021-10-276 | 25 | DIBBS |
| AN43A | 2020-01-06 | 50 | United States |
| AN43A | 2019-10-290 | 2 | Poland |
| AN43A | 2018-11-311 | 10500 | us |
| AN43A | 2018-03-82 | 50 | Hong Kong |
| AN43A | 2017-12-345 | 1 | US |
| AN4-3A | 2016-04-118 | 2 | UY |
| AN43A | 2016-01-22 | 500 | us |
| AN4-3A | 2014-05-142 | 5000 | United States |
| AN43A | 2014-05-131 | 40 | AE |
| AN4-3A | 2013-11-322 | 32 | Belgium |
| AN43A | 2013-10-284 | 1500 | United States |
| AN4-3A | 2012-11-310 | 109 | |
| AN43A | 2012-10-305 | 8 | US |
| 5306-00-206-4931 | 2011-08-227 | 90 | US |
| AN43A | 2009-07-183 | 1 | US |
Cross Reference | NSN 5306-00-206-4931
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Related Products | NSN 5306-00-206-4931
Technical Data | NSN 5306-00-206-4931
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 28 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.406 INCHES MINIMUM |
| FASTENER LENGTH | 0.453 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 8735 OR STEEL COMP 8740 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6098 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH |
| HEAD STYLE | C1 HEXAGON |
| HEAD HEIGHT | 0.140 INCHES MINIMUM AND 0.172 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM |
| GRIP LENGTH | 0.046 INCHES MINIMUM AND 0.078 INCHES MAXIMUM |
| FEATURES PROVIDED | FINISHED HEAD |
| SPECIFICATION/STANDARD DATA | 81349-MIL-B-6812 GOVERNMENT SPECIFICATION AND 88044-AN4-3A/CANCELED GOVERNMENT STANDARD |
| NONDEFINITIVE SPEC/STD DATA | HEX TYPE AND 1/4 UNF SIZE AND 1/2 IN. LENGTH |
| MANUFACTURERS CODE | 81349 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MIL-B-6812 |
Restrictions/Controls & Freight Information | NSN 5306-00-206-4931
| Category | Code | Description |
|---|---|---|
| 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. |
| Precious Metals Indicator Code: | U | Precious 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 |
|---|---|---|
| No Freight Information | ||