Ifno fit is indicated, the default class fit is 2A for internal threads, and 2B for external threads. Unified threads in practice. Here are some examples for your handy reference: 0.250 - 20UNC - 2A MOD. 1/4" x 20 UNC #4-20 UNC. 0.375 - 24UNEF - 2B. 10-32 UNF-2A. 0.190-32 UNF-2A. Let’s break down these examples by each parameter of the call-out.
PressFit Framing and Fittings. Set up temporary partitions, guards, and displays using only a hammer. 92 products. Protective Caps. Cover holes at the end of pipe, conduit, and fittings to keep out debris. 1,058 products. Protective Plugs. Insert into holes in pipe, containers, panels, and parts to keep out debris. 516. 3/8. 7/16. 1/2. 5/8. 1. UNF Hex Head Bolts ASME B18. 2.1 in A2 Stainless Steel. The most common type of fastener, a hex head bolt is designed to be tightened with a standard spanner or ratchet and socket. Popularly used in all assemblies, a standard hex bolt is a staple across the world. BY7XEw.