Product Details | FUSIBLE PLUG

5340-00-682-1643 An externally threaded cylindrical item, usually containing a fusible core, or a tapered smooth finished press-in insert made entirely of metallic eutectic substance. If without core, the item may be machined internally or have provisions to accomodate same. It is a safety device for aircraft wheels (prevents heat induced tire explosion), boilers, compressors, and similar equipment.

Part Alternates: K642M, 8048242, 2131, 5340-00-682-1643, 00-682-1643, 5340006821643, 006821643

Hardware and Abrasives | Hardware, Commercial

Supply Group (FSG) NSN Assign. NIIN
53 01 JAN 1963 00-682-1643

Cross Reference | NSN 5340-00-682-1643

Part Number Cage Code Manufacturer
2131 91840 KNAPPCO CORPORATION DBA CIVACON
8048242 18876 U S ARMY AVIATION AND MISSILE COMMAND
K642M 91840 KNAPPCO CORPORATION DBA CIVACON

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Technical Data | NSN 5340-00-682-1643

Characteristic Specifications
CASING MATERIAL BRASS
CORE INCLUDED
CORE MATERIAL SAND
CORE DIAMETER 2.031 INCHES NOMINAL
HEAT NUMBER STAMPED ON CORE NOT INCLUDED
USAGE LOCATION OUTSIDE
THREAD SIZE AND SERIES/TYPE DESIGNATOR 2-11-12 NPT
BLOWOFF LINE ATTACHMENT PROVISION NOT INCLUDED
CORE FUSING TEMP RATING 180.0 DEG FAHRENHEIT
MAXIMUM OPERATING PRESSURE 10.000 POUNDS PER SQUARE INCH

Restrictions/Controls & Freight Information | NSN 5340-00-682-1643

Category Code Description
Hazardous Material Indicator CodePThere is no information in the HMIS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Precious Metals Indicator Code:UPrecious 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
NMF Description 126760 PLUGS FUSIBLE BBC TIN COMB
Less than car load rating J 100.2
Less than truck load rating J 100.2
Water commodity Code 713 unknown
Originating Activity Code XX
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