Internal wrenching nut
An internal wrenching nut, (also known as an AllenutAllen socket on the other side; the outside of the nut is smooth or has knurling on it.
The
double hex socket). They are used where hex or square nuts won't fit.[2]
References
Notes
- ^ Holo Krome catalog (PDF), archived from the original (PDF) on 2010-02-15, retrieved 2008-11-28.
- ^ Smith 1990, p. 110.
Bibliography
- ISBN 0879384069.
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