Black Malleable Lock Nuts

Black malleable lock nuts secure threaded fittings in plumbing, gas, or steam systems, providing a tight hold and added protection against vibration or loosening.

Certifications and Approvals: ASTM A197/A197M; ASME B16.39, B16.3, B16.14; FM-approved; UL/cUL certified; NSF 61 and 372.

Product Number	Description	Weight (LB)	Weight (G)
BPF319-2	1/8" Black Lock Nut	0.015	6.8
BPF319-4	1/4" Black Lock Nut	0.033	15
BPF319-6	3/8" Black Lock Nut	0.045	20.4
BPF319-8	1/2" Black Lock Nut	0.056	25.4
BPF319-12	3/4" Black Lock Nut	0.088	39.9
BPF319-16	1" Black Lock Nut	0.141	64
BPF319-20	1-1/4" Black Lock Nut	0.197	89.4
BPF319-24	1-1/2" Black Lock Nut	0.258	117
BPF319-32	2" Black Lock Nut	0.405	183.7
BPF319-40	2-1/2" Black Lock Nut	0.674	305.7

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