| Compatibility & Interchange: |
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| Additional Information: |
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| Dix-Lock N-Series | Coupler (Male Threads) | ||||||||
|---|---|---|---|---|---|---|---|---|
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| Part Number |
Coupling Type |
Body Size |
Threads | Material | Length | Max. OD |
Hex | Pressure Ratings for: |
| 3NBM4 | Socket/Female | 3/8″ | 1/2″ – 14 Male BSPT | Steel | 1.73″ (43.80mm) |
1.1″ (27.9mm) |
1″ | Steel Coupler & Steel Plug: Max. Working: 500 PSI (35 bar) Burst: 7,000 PSI (480 bar) |
| 3NM4 | Socket/Female | 3/8″ | 1/2″ – 14 Male NPTF | Steel | 1.80″ (45.70mm) |
1.1″ (27.9mm) |
1″ | Steel Coupler & Steel Plug: Max. Working: 500 PSI (35 bar) Burst: 7,000 PSI (480 bar) |
| 4NBM3 | Socket/Female | 1/2″ | 3/8″ – 19 Male BSPT | Steel | 1.66″ (42.20mm) |
1.5″ (38.1mm) |
1-3/8″ | – |
| 4NBM4 | Socket/Female | 1/2″ | 1/2″ – 14 Male BSPT | Steel | 1.75″ (44.5mm) |
1.5″ (38.1mm) |
1-3/8″ | Steel Coupler & Steel Plug: Max. Working: 500 PSI (35 bar) Burst: 11,000 PSI (755 bar) |
| 4NBM4-B | Socket/Female | 1/2″ | 1/2″ – 14 Male BSPT | Brass | 1.75″ (44.5mm) |
1.5″ (38.1mm) |
1-3/8″ | Brass Coupler & Brass Plug: Max. Working: 300 PSI (20 Bar) Burst: 8,200 PSI (865 Bar) |
| 4NBM6 | Socket/Female | 1/2″ | 3/4″ – 14 Male BSPT | Steel | 1.85″ (47mm) |
1.5″ (38.1mm) |
1-3/8″ | Steel Coupler & Steel Plug: Max. Working: 500 PSI (35 bar) Burst: 11,000 PSI (755 bar) |
| 4NBM6-B | Socket/Female | 1/2″ | 3/4″ – 14 Male BSPT | Brass | 1.85″ (47mm) |
1.5″ (38.1mm) |
1-3/8″ | Brass Coupler & Brass Plug: Max. Working: 300 PSI (20 Bar) Burst: 8,200 PSI (865 Bar) |
| 4NBM8 | Socket/Female | 1/2″ | 1″ – 11 Male BSPT | Steel | 1.95″ (49.5mm) |
1.5″ (38.1mm) |
1-1/2″ | Steel Coupler & Steel Plug: Max. Working: 500 PSI (35 bar) Burst: 11,000 PSI (755 bar) |
| 4NBM8-B | Socket/Female | 1/2″ | 1″ – 11 Male BSPT | Brass | 1.95″ (49.5mm) |
1.5″ (38.1mm) |
1-1/2″ | Brass Coupler & Brass Plug: Max. Working: 300 PSI (20 Bar) Burst: 8,200 PSI (865 Bar) |
| 4NM3 | Socket/Female | 1/2″ | 3/8″ – 18 Male NPTF | Steel | 1.66″ (42.2mm) |
1.5″ (38.1mm) |
1-3/8″ | Steel Coupler & Steel Plug: Max. Working: 500 PSI (35 bar) Burst: 11,000 PSI (755 bar) |
| 4NM3-B | Socket/Female | 1/2″ | 3/8″ – 18 Male NPTF | Brass | 1.66″ (42.2mm) |
1.5″ (38.1mm) |
1-3/8″ | Brass Coupler & Brass Plug: Max. Working: 300 PSI (20 Bar) Burst: 8,200 PSI (865 Bar) |
| 4NM4 | Socket/Female | 1/2″ | 1/2″ – 14 Male NPTF | Steel | 1.85″ (47mm) |
1.5″ (38.1mm) |
1-3/8″ | Steel Coupler & Steel Plug: Max. Working: 500 PSI (35 bar) Burst: 11,000 PSI (755 bar) |
| 4NM4-B | Socket/Female | 1/2″ | 1/2″ – 14 Male NPTF | Brass | 1.85″ (47mm) |
1.5″ (38.1mm) |
1-3/8″ | Brass Coupler & Brass Plug: Max. Working: 300 PSI (20 Bar) Burst: 8,200 PSI (865 Bar) |
| 4NM6 | Socket/Female | 1/2″ | 3/4″ – 14 Male NPTF | Steel | 1.85″ (47mm) |
1.5″ (38.1mm) |
1-3/8″ | Steel Coupler & Steel Plug: Max. Working: 500 PSI (35 bar) Burst: 11,000 PSI (755 bar) |
| 4NM6-B | Socket/Female | 1/2″ | 3/4″ – 14 Male NPTF | Brass | 1.85″ (47mm) |
1.5″ (38.1mm) |
1-3/8″ | Brass Coupler & Brass Plug: Max. Working: 300 PSI (20 Bar) Burst: 8,200 PSI (865 Bar) |
| 4NM6-S | Socket/Female | 1/2″ | 3/4″ – 14 Male NPTF | 303 Stainless | 1.85″ (47mm) |
1.5″ (38.1mm) |
1-3/8″ | 303 S.S. Coupler & 303 S.S. Plug: Max. Working: 500 PSI (35 Bar) Burst: 12,600 PSI (865 Bar) |
| 4NM6-SS | Socket/Female | 1/2″ | 3/4″ – 14 Male NPTF | 316 Stainless | 1.85″ (47mm) |
1.5″ (38.1mm) |
1-3/8″ | – |
| 4NM8 | Socket/Female | 1/2″ | 1″ – 11-1/2 Male NPTF | Steel | 1.95″ (49.5mm) |
1.5″ (38.1mm) |
1-1/2″ | Steel Coupler & Steel Plug: Max. Working: 500 PSI (35 bar) Burst: 11,000 PSI (755 bar) |
| 4NM8-B | Socket/Female | 1/2″ | 1″ – 11-1/2 Male NPTF | Brass | 1.95″ (49.5mm) |
1.5″ (38.1mm) |
1-1/2″ | Brass Coupler & Brass Plug: Max. Working: 300 PSI (20 Bar) Burst: 8,200 PSI (865 Bar) |
| 4NM8-SS | Socket/Female | 1/2″ | 1″ – 11-1/2 Male NPTF | 316 Stainless | 1.95″ (49.5mm) |
1.5″ (38.1mm) |
1-1/2″ | – |
| Dix-Lock N-Series | Plug (Male Threads) | ||||||||
|---|---|---|---|---|---|---|---|---|
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| Part Number |
Coupling Type |
Body Size |
Threads | Material | Length | Max. OD |
Hex | Pressure Ratings for: |
| N3BM4 | Plug/Male | 3/8″ | 1/2″ – 14 Male BSPT | Steel | 3.36″ (85.3mm) |
1.13″ (28.60mm) |
1″ | Steel Coupler & Steel Plug: Max. Working: 500 PSI (35 bar) Burst: 7,000 PSI (480 bar) |
| N3M4 | Plug/Male | 3/8″ | 1/2″ – 14 Male NPTF | Steel | 3.36″ (85.3mm) |
1.13″ (28.60mm) |
1″ | Steel Coupler & Steel Plug: Max. Working: 500 PSI (35 bar) Burst: 7,000 PSI (480 bar) |
| N4BM3 | Plug/Male | 1/2″ | 3/8″ – 19 Male BSPT | Steel | 3.46″ (87.9mm) |
1.31″ (33.30mm) |
1-3/16″ | – |
| N4BM4 | Plug/Male | 1/2″ | 1/2″ – 14 Male BSPT | Steel | 3.65″ (92.7mm) |
1.31″ (33.3mm) |
1-3/16″ | Steel Coupler & Steel Plug: Max. Working: 500 PSI (35 bar) Burst: 11,000 PSI (755 bar) |
| N4BM4-B | Plug/Male | 1/2″ | 1/2″ – 14 Male BSPT | Brass | 3.65″ (92.7mm) |
1.31″ (33.3mm) |
1-3/16″ | Brass Coupler & Brass Plug: Max. Working: 300 PSI (20 Bar) Burst: 8,200 PSI (865 Bar) |
| N4BM6 | Plug/Male | 1/2″ | 3/4″ – 14 Male BSPT | Steel | 3.65″ (92.7mm) |
1.31″ (33.30mm) |
1-3/16″ | Steel Coupler & Steel Plug: Max. Working: 500 PSI (35 bar) Burst: 11,000 PSI (755 bar) |
| N4BM6-B | Plug/Male | 1/2″ | 3/4″ – 14 Male BSPT | Brass | 3.64″ (92.7mm) |
1.31″ (33.30mm) |
1-3/16″ | Brass Coupler & Brass Plug: Max. Working: 300 PSI (20 Bar) Burst: 8,200 PSI (865 Bar) |
| N4BM8 | Plug/Male | 1/2″ | 1″ – 11 Male BSPT | Steel | 3.89″ (98.8mm) |
1.51″ (38.40mm) |
1-3/8″ | Steel Coupler & Steel Plug: Max. Working: 500 PSI (35 bar) Burst: 11,000 PSI (755 bar) |
| N4BM8-B | Plug/Male | 1/2″ | 1″ – 11 Male BSPT | Brass | 3.89″ (98.8mm) |
1.51″ (38.40mm) |
1-3/8″ | Brass Coupler & Brass Plug: Max. Working: 300 PSI (20 Bar) Burst: 8,200 PSI (865 Bar) |
| N4M3 | Plug/Male | 1/2″ | 3/8″ – 18 Male NPTF | Steel | 3.46″ (87.9mm) |
1.31″ (33.30mm) |
1-3/16″ | Steel Coupler & Steel Plug: Max. Working: 500 PSI (35 bar) Burst: 11,000 PSI (755 bar) |
| N4M3-B | Plug/Male | 1/2″ | 3/8″ – 18 Male NPTF | Brass | 3.46″ (87.9mm) |
1.31″ (33.30mm) |
1-3/16″ | Brass Coupler & Brass Plug: Max. Working: 300 PSI (20 Bar) Burst: 8,200 PSI (865 Bar) |
| N4M4 | Plug/Male | 1/2″ | 1/2″ – 14 Male NPTF | Steel | 3.65″ (92.7mm) |
1.31″ (33.30mm) |
1-3/16″ | Steel Coupler & Steel Plug: Max. Working: 500 PSI (35 bar) Burst: 11,000 PSI (755 bar) |
| N4M4-B | Plug/Male | 1/2″ | 1/2″ – 14 Male NPTF | Brass | 3.65″ (92.7mm) |
1.31″ (33.30mm) |
1-3/16″ | Brass Coupler & Brass Plug: Max. Working: 300 PSI (20 Bar) Burst: 8,200 PSI (865 Bar) |
| N4M6 | Plug/Male | 1/2″ | 3/4″ – 14 Male NPTF | Steel | 3.65″ (92.7mm) |
1.31″ (33.30mm) |
1-3/16″ | Steel Coupler & Steel Plug: Max. Working: 500 PSI (35 bar) Burst: 11,000 PSI (755 bar) |
| N4M6-B | Plug/Male | 1/2″ | 3/4″ – 14 Male NPTF | Brass | 3.65″ (92.7mm) |
1.31″ (33.30mm) |
1-3/16″ | Brass Coupler & Brass Plug: Max. Working: 300 PSI (20 Bar) Burst: 8,200 PSI (865 Bar) |
| N4M6-S | Plug/Male | 1/2″ | 3/4″ – 14 Male NPTF | 303 Stainless | 3.65″ (92.7mm) |
1.31″ (33.30mm) |
1-3/16″ | 303 S.S. Coupler & 303 S.S. Plug: Max. Working: 500 PSI (35 Bar) Burst: 12,600 PSI (865 Bar) |
| N4M6-SS | Plug/Male | 1/2″ | 3/4″ – 14 Male NPTF | 316 Stainless | 3.65″ (92.7mm) |
1.31″ (33.30mm) |
1-3/16″ | 303 S.S. Coupler & 303 S.S. Plug: Max. Working: 500 PSI (35 Bar) Burst: 12,600 PSI (865 Bar) |
| N4M8 | Plug/Male | 1/2″ | 1″ – 11-1/2 Male NPTF | Steel | 3.89″ (98.8mm) |
1.51″ (38.40mm) |
1-3/8″ | Steel Coupler & Steel Plug: Max. Working: 500 PSI (35 bar) Burst: 11,000 PSI (755 bar) |
| N4M8-B | Plug/Male | 1/2″ | 1″ – 11-1/2 Male NPTF | Brass | 3.89″ (98.8mm) |
1.51″ (38.40mm) |
1-3/8″ | Brass Coupler & Brass Plug: Max. Working: 300 PSI (20 Bar) Burst: 8,200 PSI (865 Bar) |
| N4M8-SS | Plug/Male | 1/2″ | 1″ – 11-1/2 Male NPTF | 316 Stainless | 3.89″ (98.8mm) |
1.51″ (38.40mm) |
1-3/8″ | 303 S.S. Coupler & 303 S.S. Plug: Max. Working: 500 PSI (35 Bar) Burst: 12,600 PSI (865 Bar) |







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