3940-00-264-4727 BLOCK,TACKLE Index 3940-00-264-4731 BLOCK,TACKLE

National Stock Number:
3940-00-264-4730

Federal Supply Class:
3940

National Item Identification Number:
002644730

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.


Manufacturer Information:
S1801-860455PC1T013-19-23-28-2980064NAVAL SHIP SYSTEMS COMMAND


Techincal Specification:
STYLE DESIGNATOROVAL PATTERN
SHELL LENGTH18.000 INCHES NOMINAL
SHEAVE OUTSIDE DIAMETER11.625 INCHES NOMINAL
CENTER PIN DIAMETER1.625 INCHES NOMINAL
BLOCK TYPEREGULAR
MATERIAL AND LOCATIONSTEEL OVERALL
SURFACE TREATMENT AND LOCATIONZINC, ELECTROLYTIC OVERALL
SHEAVE QUANTITY2
BEARING TYPEPLAIN
SHEAVE BEARING LUBRICATION METHODSELF-LUBRICATED
TACKLE ACCOMMODATED TYPEFIBROUS ROPE
MAXIMUM TACKLE DIAMETER ACCOMMODATED2.250 INCHES
BECKET TYPETHIMBLE
BECKET QUANTITY1
MAXIMUM LOAD RATING28000.0 POUNDS
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSSIZE 18 IN.,RIG NO. 1
THE MANUFACTURERS DATA
MANUFACTURERS CODE80064
DESIGN CONTROL REFERENCES1801-860455PC1T013-19-23-28-29


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