3940-00-141-7195 BLOCK,TACKLE Index 3940-00-141-7197 BLOCK,TACKLE

National Stock Number:
3940-00-141-7196

Federal Supply Class:
3940

National Item Identification Number:
001417196

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:
MIL-B-1258281349MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
ANTITOPPLING DEVICENOT INCLUDED
ATTACHMENT STYLECHAIN SHACKLE
BEARING TYPEROLLER
BLOCK TYPEREGULAR
MATERIAL AND LOCATIONSTEEL OVERALL
MAXIMUM LOAD RATING4000.0 POUNDS
MAXIMUM TACKLE DIAMETER ACCOMMODATED0.625 INCHES
SHEAVE BEARING LUBRICATION METHODSELF-LUBRICATED
SHEAVE QUANTITY1
SHEAVE OUTSIDE DIAMETER8.000 INCHES NOMINAL
SPECIAL FEATURESSHEAVE WIDTH 1.375 IN.
STYLE DESIGNATORHALF-ROUND PATTERN
TACKLE ACCOMMODATED TYPEWIRE ROPE
TACKLE LOCKING DEVICENOT INCLUDED


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