Foster Stone International, LLC

K55

Steel Grade : K55

Thread Type :LTC BTC STC

Whole Coupling is green

N80Q

Steel Grade : N80Q

Thread Type :LTC BTC STC

Whole Coupling is red and green ribbon

T95 2

Steel Grade : T95 2

Thread Type :LTC BTC STC

Whole Coupling is silver and a yellow ribbon

L80 1

Steel Grade : L80 1

Thread Type :LTC BTC STC

Whole Coupling is red and brown ribbon

P110

Steel Grade : P110

Thread Type :LTC BTC STC

Whole Coupling is white

J55

Steel Grade : J55

Thread Type :LTC BTC STC

Whole Coupling is green and white ribbon

L80 9Cr

Steel Grade : L80 9Cr

Thread Type :LTC BTC STC

Whole Coupling is red and two yellow ribbons

C90 2

Steel Grade : C90 2

Thread Type :LTC BTC STC

Whole Coupling is purple and a yellow ribbon

API Specifications

All of our API Couplings come with Mill Test Reports and meet API specifications.

API EXTERNAL UPSET END (EUE) TUBING COUPLINGS
TUBING SIZE O.D.	COUPLING O.D	MINIMUM LENGTH	THREADS PER INCH	WEIGHT	STANDARD PALLET QUANTITY
2 3/8	3.063	4 7/8	8	3.42	1144
2 7/8	3.668	5 1/4	8	5.29	792
3 1/2	4.500	5 3/4	8	9.02	488
4 1/2	5.563	6 1/4	8	13.31	210

API BUTRESS THREAD CASING COUPLINGS
CASING SIZE O.D.	COUPLING O.D	MINIMUM LENGTH	WEIGHT	STANDARD PALLET QUANTITY
5 1/2	6.050	9 1/7	14.14	136
6 5/8	7.390	9 5/8	24.46	100
7	7.656	10	23.22	84
7 5/8	8.500	10 3/8	34.84	64
8 5/8	9.625	10 5/8	45.94	52
9 5/8	10.625	10 5/8	50.99	40
10 3/4	11.750	10 1/17	56.68	45
13 3/8	14.375	10 5/8	61.74	25
16	17.000	10 5/8	87.56	20

API ROUND THREAD CASING COUPLINGS
CASING SIZE O.D.	COUPLING O.D	MINIMUM LENGTH		WEIGHT		STANDARD PALLET QUANTITY
CASING SIZE O.D.	COUPLING O.D	SHORT	LONG	SHORT	LONG	SHORT	LONG
5 1/2	6.050	6 3/4	8	11.44	14.03	216	180
6 5/8	7.390	7 1/4	8 3/4	19.97	24.82	120	92
7	7.656	7 1/4	9	18.34	23.67	120	100
7 5/8	8.500	7 1/2	9 1/4	26.93	34.23	80	64
8 5/8	9.625	7 3/4	10	35.58	47.48	60	60
9 5/8	10.625	7 3/4	10 1/2	39.51	55.77	50	36
10 3/4	11.750	8	10 1/2	45.53	62.02	45	36
13 3/8	14.375	8	10 1/2	56.23	76.63	25	20
16	17.000	9	11	79.00	96.55	20	20