Description

Our clamps provide a reliable means to  API and other hub connections, any of the equipment in the following list may have clamp hub connections: wellhead equipment, drilling equipment, manifold system.

Our clamps allow faster and easier make up. Where limited space requires, clamp adjustment allows easy access to nuts and bolts. Clamp have 360.infinite adjustability.

We have peformed stress analysis on each clamp size using formulas outlined in “Summary of design” to demonstrate conformance with the design allowable stresses specified in API Spe 16A, first edition.

  • Fit all hub connections specified in API Spec 16A plus many other popular hub

connections.

  • Made from Forged Low Alloy Steel, qualified to the same standards API Spec 16A

requires for flanges.

  • 100% dimensional, hardness and magnetic particle inspected.
  • Self-aligning bearing washers to evenly distribute bolting stress.
  • Special coatings on bolts, nuts, and washers to ease make and break of clamp hub

connections.

  • Swivel lifting eyes on larger sizes, to make handling easy, quick and safe.
CLAMP
NO.		 NOMINAL
BORE		 WORKING
PRESSURE
(PSI)		 RING
GASKET		 OUTER
WASHER
PART NO
8 REQ’D		 INNER
WASHER
PART NO
8 REQ’D		 BOLT SIZE BOLT
PART NO
4 REQ’D.		 NUT
PART NO
8 REQ’D		 IFTING EYE
SWIVEL		 APPROX.
ASSEMBLY
WEIGHT
(LBS.)
RX BX (2)
REQ’D.		 (4)
REQ’D.		 (6)
REQ’D.
1 1 13/16 10,000 20* 151 3715-05 3716-05 7/8-9UNX7 3900-01 3899-02 – – – 51
2 1/16 5,000 23* 152 3715-05 3716-05 7/8-9UNX7 3900-01 3899-02 – – – 51
2 1 13/16 15,000 20* 151 3715-05 3716-05 7/8-9UNX8 3900-02 3899-02 – – – 73
2 1/16 10,000 23* 152 3715-05 3716-05 7/8-9UNX8 3900-02 3899-02 – – – 73
2 9/16 5,000 24* 153 3715-05 3716-05 7/8-9UNX8 3900-02 3899-02 – – – 73
3 1 13/16 20.000 – 151 3715-06 3716-06 1-8UN X9 3900-05 3899-03 – – – 150
2 1/16 15.000 23* 152 3715-06 3716-06 1-8UN X9 3900-05 3899-03 – – – 150
2 1/16 20,000 – 152 3715-06 3716-06 1-8UN X9 3900-05 3899-03 – – – 150
2 9/16 15,000 24* 153 3715-06 3716-06 1-8UN X9 3900-05 3899-03 – – – 150
4 2 9/16 10,000 24* 153 3715-06 3716-06 1-8UN×8 1/2 3900-04 3899-03 – – – 80
3 1/8 5,000 27* 154 3715-06 3716-06 1-8UN×8 1/2 3900-04 3899-03 – – – 80
5 3 1/16 10,000 27* 154 3715-06 3716-06 1-8UN×8 1/2 3900-04 3899-03 – – – 82
4 1/16 5,000 35* 155 3715-06 3716-06 1-8UN×8 1/2 3900-04 3899-03 – – – 82
6 2 9/16 20,000 – 153 3715-07 3716-07 1 1/8-8UN×9 3/4 3900-06 3899-04 – – – 146
3 1/16 15,000 27* 154 3715-07 3716-07 1 1/8-8UN×9 3/4 3900-06 3899-04 – – – 146
4 1/16 10,000 35* 155 3715-07 3716-07 1 1/8-8UN×9 3/4 3900-06 3899-04 – – – 146
7 5-1/8 10.000 – 169* 3715-09 3716-09 1 1/8-8UN×12 3900-08 3899-06 – – – 234
7 1/16 5,000 45* 3715-09 3716-09 1 1/8-8UN×12 3900-08 3899-06 – – – 234
8 3 1/16 20,000 – 154 3715-10 3716-10 1 1/2-8UN×13 1/2 3900-11 3899-07 – – 3836 310
4 1/16 15,000 – 155 3715-10 3716-10 1 1/2-8UN×13 1/2 3900-11 3899-07 – – 3836 310
5-1/8 15,000 – 169* 3715-10 3716-10 1 1/2-8UN×13 1/2 3900-11 3899-07 – – 3836 310
7 1/16 5,000 – 156 3715-10 3716-10 1 1/2-8UN×13 1/2 3900-11 3899-07 – – 3836 310
7 1/16 10,000 45* – 3715-10 3716-10 1 1/2-8UN×13 1/2 3900-11 3899-07 – – 3836 310
9 5.000 49* 157 3715-10 3716-10 1 1/2-8UN×13 1/2 3900-11 3899-07 – – 3836 310
CLAMP
NO.		 NOMINAL
BORE		 WORKING
PRESSURE
(PSI)		 RING
GASKET		 OUTER
WASHER
PART NO
8 REQ’D		 INNER
WASHER
PART NO
8 REQ’D		 BOLT SIZE BOLT
PART NO
4 REQ’D.		 NUT
PART NO
8 REQ’D		 IFTING EYE
SWIVEL		 APPROX.
ASSEMBLY
WEIGHT
(LBS.)
RX BX (2)
REQ’D.		 (4)
REQ’D.		 (6)
REQ’D.
9 11 3.000 53 – 3715-09 3716-09 1 3/8-8UN×13 3900-09 3899-06 – – 3836 285
11 3,000 53* 3715-09 3716-09 1 3/8-8UN×13 3900-09 3899-06 – – 3836 285
10 4 1/16 20,000 155 3715-13 3716-13 1 7/8-8UN×17 3900-24 3899-10 – – 3836 610
7 1/16 10,000 156 3715-13 3716-13 1 7/8-8UN×17 3900-24 3899-10 – – 3836 610
7 1/16 15,000 45* 3715-13 3716-13 1 7/8-8UN×17 3900-24 3899-10 – – 3836 610
9 10.000 49* 157 3715-13 3716-13 1 7/8-8UN×17 3900-24 3899-10 – – 3836 610
11 5.000 53* 158 3715-13 3716-13 1 7/8-8UN×17 3900-24 3899-10 – – 3836 610
11 13 5/8 3,000 57 3715-09 3716-09 1 3/8-8UN×15 3/4 3900-26 3899-06 – – 3836 375
13 5/8 3,000 57* 3715-09 3716-09 1 3/8-8UN×15 3/4 3900-26 3899-06 – – 3836 375
12 16 3/4 2,000 65 3715-09 3716-09 1 3/8-8UN×15 3900-10 3899-06 – – 3836 300
16 3/4 2,000 65* 3715-09 3716-09 1 3/8-8UN×15 3900-10 3899-06 – – 3836 300
13 11 10.000 53* 3715-12 3716-12 2 1/4-8UN×19 1/4 3900-25 3899-12 3838 3836 – 834
13 5/8 5,000 57* 160 3715-12 3716-12 2 1/4-8UN×19 1/4 3900-25 3899-12 3838 3836 – 834
14 16 3/4 3,000 65 3715-11 3716-11 2 1/4-8UN×19 1/4 3900-14 3899-08 – – 3836 485
16 3/4 3,000 65* 3715-11 3716-11 2 1/4-8UN×19 1/4 3900-14 3899-08 – – 3836 485
15 7 1/16 20,000 156 3715-04 3716-04 2 1/2-8UN×20 3/4 3900-19 3899-13 3838 3836 – 1676
11 15,000 158 3715-04 3716-04 2 1/2-8UN×20 3/4 3900-19 3899-13 3838 3836 – 1676
13 5/8 10,000 57* 159 3715-04 3716-04 2 1/2-8UN×20 3/4 3900-19 3899-13 3838 3836 – 1676
16 21 1/4 2,000 73* 3715-11 3716-11 1 5/8-8UN×18 3/4 3900-15 3899-08 3838 3836 – 525
17 20 3/4 3,000 73* 3715-12 3716-12 2 1/4-8UN×20 3900-17 3899-12 3838 3836 – 815
CLAMP
NO.		 NOMINAL
BORE		 WORKING
PRESSURE
(PSI)		 RING
GASKET		 OUTER
WASHER
PART NO
8 REQ’D		 INNER
WASHER
PART NO
8 REQ’D		 BOLT SIZE BOLT
PART NO
4 REQ’D.		 NUT
PART NO
8 REQ’D		 IFTING EYE
SWIVEL		 APPROX.
ASSEMBLY
WEIGHT
(LBS.)
RX BX (2)
REQ’D.		 (4)
REQ’D.		 (6)
REQ’D.
18 2 3/4 2,000 73* – 3715-12 3716-12 2 1/4-8UN×20 3900-17 3899-12 3838 3836 – 1140
20 3/4 3,000 73* – 3715-12 3716-12 2 1/4-8UN×20 3900-17 3899-12 3838 3836 – 1140
21 1/4 2,000 73 – 3715-12 3716-12 2 1/4-8UN×20 3900-17 3899-12 3838 3836 – 1140
21 1/4 2,000 73* – 3715-12 3716-12 2 1/4-8UN×20 3900-17 3899-12 3838 3836 – 1140
19 16 3/4 5,000 162 3715-04 3716-04 2 1/2-8UN×23 1/2 3900-20 3899-13 3838 3836 – 1365
16 3/4 5,000 65* – 3715-04 3716-04 2 1/2-8UN×23 1/2 3900-20 3899-13 3838 3836 – 1365
16 3/4 5,000 161* 3715-04 3716-04 2 1/2-8UN×23 1/2 3900-20 3899-13 3838 3836 – 1365
20 30 1,000 SPCL 3715-11 3716-11 1 5/8-8UN×17 1/2 3900-27 3899-08 – – 3838 960
22 7 1/16 15,000 – 156 3715-12 3716-12 2 1/4-8UN×18 3900-16 3899-12 3838 3836 – 920
11 10,000 – 158 3715-12 3716-12 2 1/4-8UN×18 3900-16 3899-12 3838 3836 – 920
25 7 1/16 2,000 45 3715-05 3716-05 7/8-9UN×8 1/2 3900-03 3899-02 – – – 125
26 18 3/4 15,000 – 164 3715-02 3716-02 4-8UN X 35 3900-23 3899-18 – – 3838 4612
21 1/4 10,000 – 166 3715-02 3716-02 4-8UN X 35 3900-23 3899-18 – – 3838 4612
27 18 3/4 10,000 – 164 3715-03 3716-03 3 1/4-8UN×26 1/2 3900-22 3899-16 – – 3838 2968
21 1/4 5.000 – 165 3715-03 3716-03 3 1/4-8UN×26 1/2 3900-22 3899-16 – – 3838 2968
28 11 20,000 – 158 3715-01 3716-01 3-8UN×24 1/4 3900-21 3899-15 – – 3838 2335
13 5/8 15,000 – 159 3715-01 3716-01 3-8UN×24 1/4 3900-21 3899-15 – – 3838 2335
16 3/4 10,000 – 162 3715-01 3716-01 3-8UN×24 1/4 3900-21 3899-15 – – 3838 2335
BORE
A		 WORKING
PRESSURE
(PSI)		 RING
GASKET		 CLAMP
NO.		 HUB DIMENSIONS F
(RXONLY)
NOT API		 CLAMP DIMENSIONS
RX BX B C D E G H l J
SR RX BX
1 13/16 10,000 – 151 1 5.031 3.656 2.375 – – 1.166 10.50 4.19 3.844 2.875
10,000 20* – 1 5.031 3.656 2.125 – 989 – .38 10.50 4.19 3.844 2.875
15,000 – 151 2 5.781 4.406 2.500 – – 1.166 – 12.00 4.28 4.594 2.875
15.000 20* – 2 5.781 4.406 2.250 – .989 .38 12.00 4.28 4.594 2.875
20,000 – 151 3 6.125 4.500 3.375 – – 1.622 – 13.62 6.19 4.750 3.875
2 1/16 5,000 – 152 1 5.031 3.656 2.375 – – 1.166 – 10.50 4.19 3.844 2.875
5,000 23* – 1 5.031 3.656 2.125 – .911 .47 10.50 4.19 3.844 2.875
10,000 – 152 2 5.781 4.406 2.500 – – 1.166 – 12.00 4.28 4.594 2.875
10,000 23* – 2 5.781 4.406 2.250 – 911 – .47 12.00 4.28 4.594 2.875
15,000 – 152 3 6.125 4.500 3.375 – – 1.622 13.62 6.19 4.750 3.875
15.000 23* – 3 6.125 4.500 3.250 – 1.380 – .47 13.62 6.19 4.750 3.875
20,000 – 152 3 6.125 4.500 3.375 – – 1.622 – 13.62 6.19 4.750 3.875
2 9/16 5,000 – 153 2 5.781 4.406 2.500 – – 1.166 – 12.00 4.28 4.594 2.875
5,000 24* – 2 5.781 4.406 2.250 – .911 – .47 12.00 4.28 4.594 2.875
10.000 – 153 4 6.312 4.938 2.625 – – 1.166 – 12.50 4.47 5.125 2.875
10.000 24* – 4 6.312 4.938 2.375 – .911 – .47 12.50 4.47 5.125 2.875
15,000 – 153 3 6.125 4.500 3.375 – – 1.622 – 13.62 6.19 4.750 3.875
15,000 24* – 3 6.125 4.500 3.250 – 1.380 – .47 13.62 6.19 4.750 3.875
20,000 V 153 6 8.437 6.812 3.000 – – 1.310 – 16.00 5.38 7.062 3.250

 

BORE
A		 WORKING
PRESSURE
(PSI)		 RING
GASKET		 CLAMP
NO.		 HUB DIMENSIONS F
(RXONLY)
NOT API		 CLAMP DIMENSIONS
RX BX B C D E G H l J
SR RX BX
31/8 5,000 – 154 4 6.312 4.938 2.625 – – 1.166 – 12.50 4.47 5.125 2.875
5,000 27* – 4 6.312 4.938 2.375 – .911 – .47 12.50 4.47 5.125 2.875
31/16 10.000 – 154 5 7.625 6.250 2.750 – – 1.197 – 13.75 4.50 6.438 2.938
10,000 27* 5 7.625 6.250 2.375 – .943 – .47 13.75 4.50 6.438 2.938
15,000 – 154 6 8.437 6.812 3.000 – – 1.310 16.00 5.38 7.062 3.250
15,000 27* 6 8.437 6.812 2.750 – 1.067 – .47 16.00 5.38 7.062 3.250
20,000 – 154 8 13.250 11.625 3.625 – – 1.622 – 22.88 6.50 11.875 3.875
41/16 5,000 – 155 5 7.625 6.250 2.500 – – 1.197 – 13.75 4.50 6.438 2.938
5,000 35* – 5 7.625 6.250 2.375 – .943 – .47 13.75 4.50 6.438 2.938
10,000 – 155 6 8.437 6.812 3.000 – – 1.310 – 16.00 5.38 7.062 3.250
10,000 35* 6 8.437 6.812 2.750 – 1.067 = .47 16.00 5.38 7.062 3.250
15,000 – 155 8 13.250 11.625 3.625 – – 1.622 – 22.88 6.50 11.875 3.875
20,000 – 155 10 16.250 14.625 4.125 – – 1.653 – 27.25 7.75 14.875 3.938
51/8 10,000 – 169* 7 10.875 9.250 3.375 – – 1.459 – 19.50 5.88 9.500 3.548
15,000 – 169* 8 13.250 11.625 3.625 – – 1.622 – 22.88 6.50 11.875 3.875
71/16 2,000 45 25 10.375 8.875 2.625 1.443 – – 16.75 4.75 9.125 3.459
5.000 – 156 8 13.250 11.625 3.625 – – 1.622 – 22.88 6.50 11.875 3.875
5,000 45* – 7 10.875 9.250 3.125 – 1.224 – .47 19.50 5.88 9.500 3.548
10,000 – 156 10 16.250 14.625 4.125 – – 1.653 – 27.25 7.75 14.875 3.938
10,000 45* – 8 13.250 11.625 3.375 – 1.380 – .47 22.88 6.50 11.875 3.875
BORE
A		 WORKING
PRESSURE
(PSI)		 RING
GASKET		 CLAMP
NO.		 HUB DIMENSIONS F
(RXONLY)
NOT API		 CLAMP DIMENSIONS
RX BX B C D E G H l J
SR RX BX
71/16 15.000 – 156 22 20.625 18.625 5.125 – – 2.035 – 33.62 9.25 18.875 4.875
15,000 45* – 10 16.250 14.625 **
3.625		 – 1.411 – .47 27.25 7.75 14.875 3.938
20,000 – 156 15 22.250 20.625 5.375 – – 2.309 – 39.00 10.38 20.875 5.250
9 5,000 – 157 8 13.250 11.625 3.625 – – 1.622 – 22.88 6.50 11.875 3.875
5,000 49* – 8 13.250 11.625 3.375 – 1.380 – .47 22.88 6.50 11.875 3.875
10,000 – 157 10 16.250 14.625 4.125 – 1.653 – 27.25 7.75 14.875 3.938
10,000 49* – 10 16.250 14.625 **
3.625		 – 1.411 – .47 27.25 7.75 14.875 3.938
11 3,000 53 – 9 15.625 14.000 2.875 1.399 – – 24.50 5.75 14.250 3.429
3,000 53* – 9 15.625 14.000 2.875 – 1.130 – 47 24.50 5.75 14.250 3.429
5,000 – 158 10 16.250 14.625 4.125 – – 1.654 – 27.25 7.75 14.875 3.938
5,000 53* – 10 16.250 14.625 383 – 1.411 – .47 27.25 7.75 14.875 3.938
10,000 – 158 22 20.625 18.625 5.125 – – 2.035 – 33.62 9.25 18.875 4.875
10,000 53* – 13 20.625 19.000 4.250 – 1.630 .47 33.00 9.25 19.250 4.375
15,000 – 158 15 22.250 20.625 5.375 – – 2.309 – 39.00 10.38 20.875 5.250
20,000 – 158 28 28.000 25.000 7.000 – – 3.005 – 45.25 12.00 25.250 7.282
135/8 3,000 57 – 11 18.375 16.750 3.000 1.336 – – – 27.62 5.88 17.250 3.188
3.000 57* – 11 18.375 16.750 3.000 – 1.067 – .47 27.62 5.88 17.250 3.188
5,000 – 160 13 20.625 19.000 5.625 – – 1.871 – 33.00 9.25 19.250 4.375
5.000 57* – 13 20.625 19.000 4.250 – 1.630 – .47 33.00 9.25 19.250 4.375
10,000 – 159 15 22.250 20.625 5.375 – – 2.309 – 39.00 10.38 20.875 5.250
10,000 57* – 15 22.250 20.625 5.125 – 2.067 – .47 39.00 10.38 20.875 5.250
15,000 – 159 28 28.000 25.000 7.000 – – 3.005 – 45.25 12.00 25.250 7.282
BORE
A		 WORKING
PRESSURE
(PSI)		 RING
GASKET		 CLAMP
NO.		 HUB DIMENSIONS F
(RXONLY)
NOT API		 CLAMP DIMENSIONS
RX BX B C D E G H l J
SR RX BX
163/4 2,000 65 – 12 20.375 19.000 2.500 1.269 – – – 29.12 5.75 19.500 2.938
2,000 65* – 12 20.375 19.000 2.500 – 1.005 – 47 29.12 5.75 19.500 2.938
3.000 65 – 14 21.250 19.625 3.000 1.459 – – – 31.25 6.81 20.125 3.433
3.000 65* – 14 21.250 19.625 3.000 – 1.193 – .47 31.25 6.81 20.125 3.433
5,000 – 162 19 25.625 24.000 6.000 – – 1.778 – 40.50 10.50 24.250 4.188
5.000 65* – 19 25.625 24.000 6.000 – 1.536 – .47 40.50 10.50 24.250 4.188
5,000 – 161* 19 25.625 24.000 6.000 – – 1.778 – 40.50 10.50 24.250 4.188
10,000 – 162 28 28.000 25.000 7.000 – – 3.005 – 45.25 12.00 25.250 7.282
183/4 10,000 – 164 27 31.250 27.875 8.000 – – 3.630 – 49.50 13.12 28.125 8.707
15,000 – 164 26 34.000 30.500 8.000 – – 4.005 – 54.50 15.81 30.750 9.515
203/4 2,000 73* – 18 26.375 24.500 4.125 – 1.563 – .59 39.00 9.50 24.750 4.492
3,000 73* – 17 25.625 24.000 3.750 – 1.474 – .59 38.12 9.25 24.500 4.053
3,000 73* – 18 26.375 24.500 4.125 – 1.563 – .59 39.00 9.50 24.750 4.492
3,000 73* – 26.375 24.500 4.125 – 1.872 – .00 39.00 9.50 24.750 4.492
211/4 2,000 73* – 16 24.812 23.188 2.875 – 1.161 – .59 35.00 6.81 23.750 3.397
2,000 73 – 18 26.375 24.500 4.125 1.872 – – – 39.00 9.50 24.750 4.492
2,000 73* – 18 26.375 24.500 4.125 – 1.563 – .59 39.00 9.50 24.750 4.492
2,000 73* – 18 26.375 24.500 4.125 – 1.872 – .00 39.00 9.50 24.750 4.492
5,000 – 165 27 31.250 27.875 8.000 – – 3.630 – 49.50 13.12 28.125 8.707
10,000 – 166 26 34.000 30.500 8.000 – – 4.005 – 54.50 15.81 30.750 9.515
30 1,000 SPCL – 20 34.750 32.750 4.000 – – – 46.12 7.62 33.250 4.674
BOLT SIZE FLOUROPOLYMER
COATED B7/L7 BOLTS*
(FT-LBS)		 UNCOATED B7/L7 BOLTS
LUBRICATED WITH API 5A2
THREAD COMPOUND**(FT-LBS)
7/8-9UN 185 313
1-8UN 280 474
1 1/8-8UN 400 686
1 1/4-8UN 550 953
1 3/8-8UN 735 1281
1 1/2-8UN 960 1676
1 5/8-8UN 1225 2146
1 7/8-8UN 1890 3331
2 1/4-8UN 3270 5821
2 1/2-8UN 4500 8028
3-8UN* 7780 13982
3 1/4-8UN* 9900 17830
4-8UN* 18475 33461