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National Stock Number:
3940-00-264-4747
Federal Supply Class:
3940
National Item Identification Number:
002644747
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:
| S1801-770369PC1 AND 3 T0 20 | 80064 | NAVAL SHIP SYSTEMS COMMAND | | S1801-770369PC1 AND 3 TO 20 | 80064 | NAVAL SHIP SYSTEMS COMMAND | | S1801-770369PC1-3T020 | 80064 | NAVAL SHIP SYSTEMS COMMAND |
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Techincal Specification:
| ANTITOPPLING DEVICE | NOT INCLUDED | | BEARING TYPE | PLAIN | | BLOCK TYPE | REGULAR | | CENTER PIN DIAMETER | 2.497 INCHES NOMINAL | | MATERIAL | COPPER ALLOY BEARING | | MATERIAL | STEEL CENTER PIN | | MATERIAL | STEEL SHEAVE | | MATERIAL | STEEL SHELL | | MAXIMUM TACKLE DIAMETER ACCOMMODATED | 1.000 INCHES | | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | AS DIFFERENTIATED BY 1 IN. WIRE ROPE SIZE,TREBLE BLOCK | | SHEAVE BEARING LUBRICATION METHOD | PRESSURE GREASE FITTING | | SHEAVE OUTSIDE DIAMETER | 24.000 INCHES NOMINAL | | SHEAVE QUANTITY | 3 | | STYLE DESIGNATOR | DIAMOND PATTERN | | SURFACE TREATMENT | ZINC OVERALL | | TACKLE ACCOMMODATED TYPE | WIRE ROPE | | TACKLE LOCKING DEVICE | NOT INCLUDED |
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