9/19/2020 | Page 1 of 2 North America: Danboro, PA * E-mail: info@pemnet.com * Tel: +1-215-766-8853 Europe: Galway, Ireland * E-mail: europe@pemnet.com * Tel: +353-91-751714 Asia/Pacific: Singapore * E-mail: singapore@pemnet.com * Tel: +65-6-745-0660 Shanghai, China * E-mail: china@pemnet.com * Tel: +86-21-5868-3688 Part # AC-0420-2, Floating Self-Clinching Fasteners A4, AS, AC - Uni ed Locking and Non-locking Threads These fasteners provide load-bearing threads in thin sheets and permit up to .030" adjustment for mating hole misalignment. The self-clinching feature o ers fast and simple assembly. The fasteners are squeezed into prepared holes using any standard press. The sheet remains ush on one side, and the fastener is permanently locked in place. Extra strength and support in assembly is obtained by the threads of the oating nut extending fully into the more Speci cations Thread Size .250-20 (1/4-20) Non-Locking Thread Type Thread Code 0420 Shank Code 2 9/19/2020 | Page 2 of 2 .054 in A (Shank) Max. 1 Min. Sheet Thickness .054 in Hole Size in Sheet + .003 .000 .515 in C Max. .514 in D Max. .510 in E .015 .600 in T1 Max. .210 in Min. Dist. Hole C/L to Edge .420 in Float .015" minimum, in all directions from center, .030" total Fastener Material 300 Series Stainless Steel Fastener Materials - Retainer 300 Series Stainless Steel Fastener Materials - Nut 300 Series Stainless Steel Standard Finish - Retainer & Nut Passivated and/or tested per ASTM A380 For Use in Sheet Hardness1 HRB 70 / HB 125 or Less Thread Speci cation Internal, ANSI B1.1, 2B CAD Supplier PennEngineering(R) (PEM(R)) HRB - Hardness Rockwell "B" Scale. HB - Hardness Brinell.