3940-00-239-8776 BLOCK,TACKLE Index 3940-00-239-8782 BLOCK,TACKLE

National Stock Number:
3940-00-239-8778

Federal Supply Class:
3940

National Item Identification Number:
002398778

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:
GG-B-50081348FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC
GGGB50081348FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC


Techincal Specification:
ANTITOPPLING DEVICENOT INCLUDED
ATTACHMENT STYLEFLATTED LOOSE SWIVEL EYE WITH SWIVEL HOOK
BEARING TYPEPLAIN
BECKET TYPETHIMBLE
BECKET QUANTITY1
BLOCK TYPEREGULAR
LOAD RATING600.0 POUNDS MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-5687 TYPE 1 COMP A MIL SPEC SINGLE MATERIAL RESPONSE BEARING
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-741 FED SPEC SINGLE MATERIAL RESPONSE SHELL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-681 FED SPEC SINGLE MATERIAL RESPONSE SHEAVE
MATERIALCOPPER ALLOY BEARING
MATERIALSTEEL CENTER PIN
MATERIALSTEEL SHEAVE
MATERIALSTEEL SHELL
MAXIMUM TACKLE DIAMETER ACCOMMODATED0.625 INCHES
NONDEFINITIVE SPEC/STD DATA2 TYPE AND A GRADE AND 2 STYLE
SHEAVE BEARING LUBRICATION METHODSELF-LUBRICATED
SHEAVE OUTSIDE DIAMETER10.000 INCHES NOMINAL
SHEAVE QUANTITY2
STYLE DESIGNATORDIAMOND PATTERN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-Z-17871 MIL SPEC SINGLE TREATMENT RESPONSE CENTER PIN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-Z-17871 MIL SPEC SINGLE TREATMENT RESPONSE SHEAVE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-Z-17871 MIL SPEC SINGLE TREATMENT RESPONSE SHELL
SURFACE TREATMENTZINC CENTER PIN
SURFACE TREATMENTZINC SHEAVE
SURFACE TREATMENTZINC SHELL
TACKLE ACCOMMODATED TYPEWIRE ROPE
TACKLE LOCKING DEVICENOT INCLUDED


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