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draw pin
draw pin n. 
/ˈdrɑ ˌpɪn/ (a) a removable pin or peg used for fastening or holding parts together; (b) (Joinery) the wooden peg used to pin together a mortise and tenon joint in draw boring (draw boring n.); cf. drawbore pin n. (b) at drawbore n.
Brit. /ˈdrɔː pɪn/
, /ˈdrɔː pɪn/U.S. /ˈdrɔ ˌpɪn/
, /ˈdrɔ ˌpɪn//ˈdrɑ ˌpɪn/ΚΠ
1679 J. Moxon Mech. Exercises I. ix. Explan. Terms 166 Draw Pins, described..§6.
1733 J. Tull Horse-hoing Husbandry xxv. 195 When the Beam is screw'd up..the Draw-Pin standing in the Hole 8 or 9. will bring the Plow so much to the left.
1859 Trans. N.Y. State Agric. Soc. 1858 18 483 If the upper hinge is not bolted to the arm,..put no less than three draw pins through the tenon.
1917 Railway & Locomotive Engin. Aug. 247/3 This safety bar has the draw pins..passing through it.
2002 P. Brett Bench Joinery iv. 103 These joints are normally wedged, although for extra strength draw pins can be used.
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