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National Stock Number:
3940-00-283-7690
Federal Supply Class:
3940
National Item Identification Number:
002837690
Description:
BLOCK,TACKLE
Detail:
A MECHANICAL DEVICE, CONSISTING OF A PULLEY(S) OR SHEAVE(S) ENCASED IN A SHELL OR FRAME WHICH MAY BE PROVIDED WITH A MEANS SUCH AS A HOOK, EYE, STRAP, SCREW, ETC., BY WHICH IT MAY BE ATTACHED TO AN OBJECT. IT IS USED TO CHANGE DIRECTION OF A RUNNING ROPE AND/OR TO GAIN A MECHANICAL ADVANTAGE.
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Manufacturer Information:
| 108065 | 75535 | THE CROSBY GROUP LLC | | 2624747 | 80064 | NAVAL SHIP SYSTEMS COMMAND | | 6405291 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 481 | 75535 | THE CROSBY GROUP LLC | | 418 | 76257 | CROSBY GROUP INC THE MCKISSICK PLANT DIV | | 418 4 1/2 INCH | 76257 | CROSBY GROUP INC THE MCKISSICK PLANT DIV | | 752-6405291-69 | 53711 | NAVAL SEA SYSTEMS COMMAND |
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Techincal Specification:
| STYLE DESIGNATOR | OVAL PATTERN | | SHELL LENGTH | 7.375 INCHES MINIMUM AND | | 7.625 INCHES MAXIMUM | | SHEAVE OUTSIDE DIAMETER | 4.125 INCHES MINIMUM AND | | 4.375 INCHES MAXIMUM | | BLOCK TYPE | SNATCH | | LOCKING STYLE | SAFETY LOCKING | | MATERIAL AND LOCATION | BRONZE,SAE 660,BEARING | | STEEL,FORGING,COMPOSITION C1040,HOOK | | STEEL,FORGING,COMPOSITION C1040,YOKE | | STEEL,FORGING,COMPOSITION C1040,SHEAVE | | STEEL,FORGING,COMPOSITION C1040,SHACKLE | | SURFACE TREATMENT AND LOCATION | ENAMEL PER DWG 80064/2584542 CLASS F,TYPE 1 OVERALL | | SHEAVE QUANTITY | 1 | | BEARING TYPE | PLAIN | | SHEAVE BEARING LUBRICATION METHOD | PRESSURE GREASE FITTING | | TACKLE ACCOMMODATED TYPE | WIRE ROPE | | MAXIMUM TACKLE DIAMETER ACCOMMODATED | 0.500 INCHES | | TACKLE LOCKING DEVICE | NOT INCLUDED | | ANTITOPPLING DEVICE | NOT INCLUDED | | ATTACHMENT STYLE | FLATTED LOOSE SWIVEL EYE WITH SWIVEL HOOK | | MAXIMUM LOAD RATING | 26000.0 POUNDS |
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