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In general, measurements are taken from examples in the editor's collection. If you can supply data for missing models, please help me out. Thank you.

Narrangansett

Dimensions of 8xx Series of Hand Screws

In some cases, there appear to be substitutions of screws;  the diameters fit, but the lengths are not in sequence.  

Model

Number

Screw

Diameter

Screw

Length

Jaw Length Jaw Size per dozen
800 1 1/8 23 (?) 20 2 5/8 x 2 1/2  
802 1 1/8 24 20 2 1/2 x 2 5/8
804 22 18 2 1/2 x 2 1/2  
805 20 18 2 3/8 x 2 3/8  
806 1 20 16 2 3/8 x 2 3/8  
808 13/16 18 14 2 1/8 x 2 1/8  
810 13/16 16 12 1 7/8 x 1 7/8  
811 3/4 14 1/2 12 1 3/4 x 1 3/4  
812 5/8 12 1/2 10 1 5/8 x 1 5/8
813 (1) 9/16 10 3/4 8 1 3/8 x 1 3/8  
814 (2) 1/ 2 8 7 1 1/ 16 x 1 1/ 8  

Notes:
(1) information on NR813 provided by Jesse Sims (JSims@gate.net), 99 08 28; thank you.
(2) model made from HR Jaws, combined with NR spindles, acquired B'Field 2003 Spring.



last revised and validated

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