T-nuts are commonly made of steel, stainless steel, come in various grades, and can have a finish, such as black oxide. they can have left- or right-hand threads, and can be fully or partially threaded. the size of the nut should match the corresponding bolt size. t-nuts can be made in the us.
Mostly astm a193 grade b7 bolts are selected along with astm a194 grade 2h nuts. however there is no astm or other standard where it recommends using a194 gr. 2h nuts with this bolt. the reason that a194 grade 2h nuts are used more often with a193 grade b7 bolts is simply cost.
Modern professional fast delivery acme square nut ifi standard t&y hardware industry co., ltd. us $0.13-$101.00 / piece
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