Lee Precision 7/16-20 hex jam nut for Pro 4-20 melters – FE3464

Lee Precision hex jam nut 7/16-20 – FE3464

Original Lee Precision replacement hex jam nut, 7/16-20 UNF thread. Lee catalogs this as a replacement part for the Pro 4-20 series electric lead melters, listing it as a component of the PRO 4 20LB 220V model (code 90948).

The jam nut is distinguished from a standard hex nut by its reduced thickness: it is used to lock a pre-adjusted threaded element in place without altering its setting. On Lee melters, this function applies to the threaded components of the pouring assembly, where the nut should be tightened against the part to be secured rather than fully down the thread. Lee specifies a required quantity of one piece.

Main features

• Thread: 7/16-20 UNF
• Design: hex jam nut
• Function: locking jam nut
• Quantity specified by Lee: 1 piece

Recommended use

Replacement part for Lee Pro 4-20 series electric lead melters, specifically for the 220V model code 90948.

Manufacturer code: FE3464