5/8 inch drive ratchet HD-7

1927 Catalog Drawing vs 1929 ratchet (15 tooth)

5/8 inch drive ratchets

The 5/8 inch drive was first offered in 1923 and continued in some form into the 1970s. There is a huge gap in the catalogs and these ratchets were offered for 8 years (in the catalogs). The 3/4 inch ratchet is exactly the same. Snap on names these -– Heavy Duty - and then does not define the square size (5/8 drive). During the early period the 9/32, ½, 5/8 and 7/8 drives were the offerings. Later the 1/4, 3/8, 1/2, 3/4 were standards

Stock Number	Description	Date range
HD-7	Ratchet (15 tooth)	1923 – 1931
HD-7A	Extra Socket receiving plug	1925 - 1931
HD-7B	Extra Socket receiving plug 5/8 handle 7/8 drive (an adaptor)	1925 – 1927
HD-7C	Plug with handle	1927 – 1929
HD-8	5/8 ½ ratchet plug	1929 - 1931

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The HD-7 ratchet was riveted closed with 4 rivets. The plug is an HD7A

Ratchet

The ratchet is the standard - to reverse take the plug out and put it in the other way.

The ratchet is the standard - to reverse take the plug out and put it in the other way. Very simple.

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Bridge from 5/8 to 3/4 inch drive

Here is a way to bridge the Heavy Duty - 5/8 inch drive to the "new" 3/4 inch drive

This allows a 5/8 ratchet to be used for 3/4 inch drive socket. Very simple.

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