Steel Merchant and API Line Couplings
Steel Merchant and API Line Couplings
• Meets or exceeds all applicable ASTM, ANSI and API standards
• Merchant Couplings stocked 1/8" - 6" diameters
• API Line Couplings stocked 1/8" - 8" diameters
• API Couplings are rated at 300 PSI
• API Couplings have tapered threads per API 5B
• Full stock of specialty couplings, such as Half Couplings and Right and Left Couplings
Dimensions
| Nom. Diam. in Inches | 1/8” | 1/4” | 3/8” | 1/2” | 3/4” | 1” | 1-1/4” | 1-1/2” | 2” | 2-1/2” | 3” | 4” | 5” | 6” | 8" | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Standard Merchant Coupling | ||||||||||||||||
| O.D. In. | 0.563 | 0.721 | 0.876 | 1.064 | 1.314 | 1.577 | 1.901 | 2.202 | 2.752 | 3.251 | 4.003 | 5.004 | 6.300 | 7.395 | - | |
| Length In. | 0.813 | 1.188 | 1.188 | 1.563 | 1.626 | 2.001 | 2.064 | 2.064 | 2.126 | 3.127 | 3.252 | 3.502 | 3.752 | 4.003 | - | |
| Half Coupling | ||||||||||||||||
| O.D. In. | 0.563 | 0.721 | 0.876 | 1.064 | 1.314 | 4.577 | 1.901 | 2.202 | 2.752 | 3.251 | 4.003 | 5.004 | 6.300 | 7.394 | - | |
| Length In. | 0.344 | 0.532 | 0.532 | 0.721 | 0.753 | 0.938 | 0.969 | 0.969 | 1.001 | 1.501 | 1.564 | 1.690 | 1.824 | 1.938 | - | |
| API Coupling | ||||||||||||||||
| O.D. In. | 0.563 | 0.719 | 0.875 | 1.063 | 1.313 | 1.576 | 2.054 | 2.200 | 2.875 | 3.375 | 4.000 | 4.625 | 6.296 | 7.390 | 9.625 | |
| Length In. | 1-1/16 | 1-5/8 | 1-5/8 | 2-1/8 | 2-1/8 | 2-5/8 | 2-3/4 | 2-3/4 | 2-7/8 | 4-1/8 | 4-1/4 | 4-1/2 | 4-5/8 | 4-7/8 | 5-1/4 | |
