TH 半接頭

	編號	規格	T	L	D
	編號	TH	UNF/UN(thread)	L	D
	TWH-04	1/4	7/16-20	27	12
	TWH-06	3/8	9/16-18	30	14
	TWH-08	1/2	3/4-16	32	18
	TWH-10	5/8	7/8-14	37	21
	TWH-12	3/4	1 1/16-12	38	25
	TWH-16	1"	1 5/16-12	45	31.5
	TWH-20	1 1/4	1 5/8-12	50	40
	TWH-24	1 1/2	1 7/8-12	56	48
	TWH-28	1 3/4	2 1/4-12	60	57
	TWH-32	2"	2 1/2-12	65	64
	TWH-40	2 1/2	3-12	75	76