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National Stock Number:
3940-01-492-7931
Federal Supply Class:
3940
National Item Identification Number:
014927931
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:
| 14901335 | 53711 | NAVAL SEA SYSTEMS COMMAND | | 581-6726890-AY99 | 53711 | NAVAL SEA SYSTEMS COMMAND |
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Techincal Specification:
| STYLE DESIGNATOR | FIDDLE PATTERN | | SHELL LENGTH | 61.750 INCHES NOMINAL | | SHEAVE OUTSIDE DIAMETER | 27.500 INCHES NOMINAL | | SECOND SHEAVE OUTSIDE DIAMETER | 27.500 INCHES NOMINAL | | CENTER PIN DIAMETER | 3.750 INCHES NOMINAL | | SECOND CENTER PIN DIAMETER | 3.750 INCHES NOMINAL | | MATERIAL AND LOCATION | STEEL, CORROSION RESISTING OVERALL | | SHEAVE QUANTITY | 2 |
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