FF6400-L Straight Thread Connector Long series part list

SAE J1453 / Style A: 521820 formally 520122 / Style B: 521720 formally 520122

Part #	d UN/UNF-2A	n UN/UNF-2A	L32	L31	S5	d1	d20	Style

FF6400-L-4-4-O-A	9/16-18	7/16-20	2.07	1.64	0.63	0.18	0.18	A
FF6400-L-4-4-0-B	9/16-18	7/16-20	2.07	1.64	1.63	0.18	0.18	B
FF6400-L-6-6-O-A	11/16-18	9/16-18	2.27	1.80	0.75	0.26	0.26	A
FF6400-L-6-6-O-B	11/16-16	9/16-18	2.27	1.80	0.75	0.26	0.26	B
FF6400-L-8-8-O-A	13/16-16	3/4-16	2.67	2.12	0.88	0.37	0.37	A
FF6400-L-8-8-O-B	13/16-16	3/4-16	2.67	2.12	0.88	0.37	0.37	B
FF6400-L-10-10-O-A	1-14	7/8-14	3.13	2.50	1.06	0.49	0.49	A
FF6400-L-10-10-O-B	1-14	7/8-14	3.13	2.50	1.06	0.49	0.49	B
FF6400-L-12-12-O-A	1 3/16-12	1 1/16-12	3.76	3.03	1.25	0.61	0.61	A
FF6400-L-12-12-O-B	1 3/16-12	1 1/16-12	3.76	3.03	1.25	0.61	0.61	B
FF6400-L-16-12-O-B	1 7/8-12	1 1/16-12	4.14	3.41	1.50	0.81	0.61	B
FF6400-L-16-16-O-A	1 7/16-12	1 5/16-12	4.14	3.41	1.50	0.81	0.81	A
FF6400-L-16-16-O-B	1 7/16-12	1 5/16-12	4.14	3.41	1.50	0.81	0.81	B
FF6400-L-20-20-O-B	1 11/16-12	1 5/8-12	4.76	4.03	1.88	1.02	1.02	B
FF6400-L-20-16-O-B	1 11/16-12	1 5/16-12	5.04	4.03	1.75	1.02	0.85	B
FF6400-L-24-24-O-B	2-12	1 7/8-12	5.26	4.53	2.13	1.26	1.26	B

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