Note that for conventional chassis mounting(with screws and nuts), Amphenol Type S Sockets require the mounting plate listed here. The 86-3-13 and 86-3-24 covers may be used with Type S sockets and 86CP type plugs for making "umbilical cords", see under "Amphenol" for the covers. Note that for items noted as NOS (New Old Stock, meaning not currently manufactured), quantities may be limited to stock on hand. otsoc456pin Amphenol 4 pin Molded In Plate socket 77-MIP-4 This socket mounts in the same hole ( 1 1/8" with 1 1/2" mounting centers) as standard octal sockets.Fits tubes such as 2A3,45,300B,811A,572B, etc. Amphenol type 77-MIP-4. 77-MIP-4$28.95 4 pin Amphenol Type S socket 78S4 Amphenol type 78S4. Fits tubes such as 2A3, 45, 300B, 811A, 572B, etc. Requires mounting plate 12-001-03 for chassis mounting, 78S4$18.95 5 pin Amphenol Type S socket Amphenol type 78S5. Fits tubes such as 807 and '27. Requires mounting plate 12-001-03 for chassis mounting, 78S5$18.95 6 pin Amphenol Type S Socket 78S6 Amphenol type 78S6. Fits tubes such as 6D6 & 42. Often used on Leslie speakers as power connectors. Requires mounting plate 12-001-03 for chassis mounting. 78S6$20.95 11 Pin Amphenol Type S Socket 78S11 11 pin socket for relays and also used on some Leslies. Requires mounting plate 12-001-03 for chassis mounting, also accepts both types of snap-on covers (86-3-13 & 86-3-24). Amphenol type 78S11 78s11$10.95 Cover for Amphenol Plugs/Sockets Snaps over Amphenol Type S (78S) sockets and Type CP (86CP) plugs. 86-3-13$4.25 Strain Relief Cover Cover similar to 86-3-13, but has a screw-down strain relief to attach to the cable. Snaps over Amphenol Type S (78S) sockets and Type CP (86CP) plugs. 86-3-24$8.95 Mounting Plate for Amphenol Sockets & Plugs Amphenol p/n 12-001-03. Fits 78S type sockets and 86CP type sockets. 12-001-03$3.99 Magnoval Chassis Mount Ceramic 9 pin socket Fits tubes such as EL509 and WE-437A, can also be used with novar base tubes such as 7868. Fit 1 1/8 inch (29mm) hole, mounting hole centers are 1 1/2 to 1 5/8 inch (38 to 42 mm) apart. magnocer$4.95 12 Pin Amphenol Socket 77MIP12 77MIP12 12 pin version of Amphenol Molded In Plate socket. Fits 1 1/8 inch hole with 1 1/2 inch mounting hole centers. New Old Stock. Does NOT fit 12 pin compactron tubes or any other tube, this is a power/speaker/relay socket only, typically used in organs or jukeboxes. 77MIP12$16.95 4 pin wafer ceramic socket Fits tubes such as 2A3, 45, 300B, 811A, 572B, etc. Chinese made copy of EF Johnson 4 pin socket. 4pincerwafer$4.10 5 pin wafer ceramic socket Fits tubes such as 807, 27, and 76. Chinese made copy of EF Johnson 5 pin socket. 5pincerwafer$4.95 Octal Johnson style Ceramic Wafer Socket Same syle as 4 & 5 pin ceramic wafer sockets. Fits on 1 3/4 inch mounting hole centers. Octal Johnson style Ceramic Wafer Socket octalcerwafer$2.95 Triode, USA For Customer Service, Questions, Shipping, Ordering, etc., M-F 9AM-4PM CT 1-800-774-3201 Email us Anytime: questions@triodestore.com TECH SUPPORT is available 4 days per week: 9 AM to 4 PM CT Monday, Tuesday, Thursday & Friday Ph 1-800-774-3201 Or email: tech@triodestore.com