National Item Identification Number

00-291-1161
002911161
3940-00-291-1161
3940002911161

National Stock Number

Item Name

BLOCK,TACKLE

Federal Supply Class

3940

Description

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.

Commercial and Government Entity Code (Supplier Data)

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81898

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SUPERVISOR OF SHIPBUILDING
CONVERSION AND REPAIR USN
SAN FRANCISCO
CA
94135

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Reference Numbers (Part Numbers)

S1801F921816PC1THRU14-17THRU29
2260816-2
805-2555040

Required Categories

SHELL LENGTH
SHEAVE OUTSIDE DIAMETER
CENTER PIN DIAMETER
BLOCK TYPE
MATERIAL

Required Description

12.750 INCHES NOMINAL
6.000 INCHES NOMINAL
1.247 INCHES NOMINAL
REGULAR
BRAS