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National Stock Number:
3940-00-264-4746
Federal Supply Class:
3940
National Item Identification Number:
002644746
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:
| 770369 PIECE 1-3 T0 20 | 80064 | NAVAL SHIP SYSTEMS COMMAND | | 770369 PIECE 1-3 TO 20 | 80064 | NAVAL SHIP SYSTEMS COMMAND | | S1801-770369PC1-3T020 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
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Techincal Specification:
| STYLE DESIGNATOR | DIAMOND PATTERN | | SHEAVE OUTSIDE DIAMETER | 20.000 INCHES NOMINAL | | CENTER PIN DIAMETER | 2.247 INCHES NOMINAL | | BLOCK TYPE | REGULAR | | MATERIAL AND LOCATION | BRONZE BEARING | | STEEL CENTER PIN | | STEEL SHEAVE | | STEEL SHELL | | SURFACE TREATMENT AND LOCATION | ZINC, ELECTROLYTIC OVERALL | | SHEAVE QUANTITY | 3 | | BEARING TYPE | PLAIN | | SHEAVE BEARING LUBRICATION METHOD | PRESSURE GREASE FITTING | | TACKLE ACCOMMODATED TYPE | WIRE ROPE | | MAXIMUM TACKLE DIAMETER ACCOMMODATED | 0.875 INCHES | | TACKLE LOCKING DEVICE | NOT INCLUDED | | ANTITOPPLING DEVICE | NOT INCLUDED | | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | AS DIFFERENT1ATED BY SHEAVE QUANTITY AND BY MAXIMUM TACKL DIAMETER ACCOMMODATED | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 80064 | | DESIGN CONTROL REFERENCE | 770369 PIECE 1-3 TO 20 |
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