Wood screw, round head, slotted, 188 stainless steel. Flat plain ansi type a washer din 933 pdf asme b18. Slotted head cap screws, square head set screws and. Metric 12point flange head screws american society of. Click here to purchase the full version from the ansi store. Helical springlock, tooth lock, and plain washers inch series. Standards slotted head cap screws, square head set screws and slotted headless set screws. A low or medium carbon steel, externally threaded mechanical device 1 4 diameter or larger, with a trimmed hex head and a washer face on the bearing surface. Set screws, hex and spline keys inch series an american national standard three park avenue new york, ny 10016. These sizes as well as all other sizes of type a plain washers are to be ordered by id, od and thickness dimensions. Washers fit under the head of a fastener in order to increase the hold of the fastener or to increase the bearing surface. The critical fastener facts every fastener supplier and user. A locking washer with teeth or prongs which extend outward from the outside edge of the washer as well as on the inside edge.
A catalog of their drafting standards and other asme publications is available by writing to asme, 22 law drive, box 2900, fair. This maintains essential tension and opposes any loosening. No part of this document may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. Inspection and quality assurance for general purpose. American national standard type a plain washers preferred sizes ansiasme b18. Asme b18 digital fastener library introduction what is asme b18.
Astm b 159, standard specification for phosphor bronze wire astm b 21 1. Threads shall be cut or rolled in accordance with asme b1. The fileopen plugin works with adobe reader and other viewers. A numerical system for identifying fasteners, and all their characteristics it supercedes b18. R 2017 metric plain washers american wood council awc awc nds 2015 national design specification nds for wood construction american wood protection.