Phone:
(701)814-6992
Physical address:
6296 Donnelly Plaza
Ratkeville, Bahamas.

Precision engineering solutions for hydraulic systems and industrial applications come from a trusted manufacturer of hydraulic fittings and flanges, Z-Lok. These products are engineered to connect reliably, to keep leakages under control, to withstand high pressure and to have a long service life. We manufacture fittings and flanges in different sizes and shapes as per different industry requirements.
Z-Lok is a trusted and trusted Hydraulic Tube Fittings Manufacturer that provides precision fabricated tube fittings for the secure and leak-free hydraulic connection. The hydraulic tube fittings are capable of high pressure and vibration resistance, and can be used in hydraulic machinery, industrial equipment, construction systems and fluid power systems etc. where working conditions are harsh. Z-Lok fittings come in different sizes and configurations and deliver reliable performance and service life.
| STANDARD | DIN 2353/ ISO 8434-1 |
|---|---|
| MATERIAL | MS, CS, SS 304 ,SS 304L , SS 316 ,SS 316L, SS 316TI ( 1.4571) , BRASS , COPPER , DUPLEX , SUPER DUPLEX , INCONEL , MONEL , HASTELLOY , 904L , 6MO, TITANIUM , ALUMNIUM, ALLOY 20 |
| SERIES | LL- LOW PRESSURE , L- MEDIUM PRESSURE, S- HIGH PRESSURE |
| WORKING PRESSURE | (LOW) LL SERIES – 100 BAR |
| (MEDIUM)L SERIES – 100 BAR TO 500 BAR | |
| (HEAVY)S SERIES – 200 BAR TO 800 BAR | |
| SIZE RANGE | LL SERIES – 4LL TO 12LL |
| L SERIES – 6L TO 42L | |
| S SERIES – 6S TO 38S | |
| CONNECTIONS | TUBE TO TUBE , TUBE TO MALE THREAD , TUBE TO FEMALE THREAD , TUBE TO BUTT WELD , TUBE TO SOCKET WELD , TUBE TO JIC 37* , TUBE TO 24* CONE, TUBE TO SWIVEL END , TUBE TO ADJUSTBALE STANDPIPE |
| WELD NIPPLE TO MALE THREAD , WELD NIPPLE TO FEMALE THREAD , WELD NIPPLE TO BUTT WELD , WELD NIPPLE TO SOCKET WELD , WELD NIPPLE TO 24* CONE , WELD NIPPLE TO 37* JIC , WELD NIPPLE TO SWIVEL | |
| BODY TYPE | FORGED, BAR STOCK |
| ACCESSORIES | O-RING, DOWTY SEAL , COPPER WASHER , ED SEAL, CUTTING RING , NUT |
| O-RING & SEALS | NBR ( -35*C TO 100* C ) VITON (-25*C TO 200* C) , PTFE – (-60*C TO 240*) |
| SURFACE | CARBON STEEL -TRIVALENT ZINC PLATED , YELLOW PLATTING , BLACK PHOSPHATED, |
| STAINLESS STEEL – EXPORT BRIGHT FINISH, SHORT BLASTED FINISH, ELECTROPLATED FINISH | |
| TEMPERATURE | STEEL – (-40* C TO 120*C) ,STAINLESS STEEL – (-60*C TO 400*C) BRASS – (-60*C TO 175*C) |
| APPLICATIONS & INDUSTRIES | CONSTRUCTION EQUIPMENTS , DRILLING PLATFORMS, HYDRO POWER PLANTS , MACHINE TOOLS , RAILWAY TECHNOLOGY , SHIPBUILDING , WIND TUBRINE , MOBILE HYDRAULIC EQUIPMENT , MINNING , STATIONARY HYDRAULIC EQUIPMENT, INDUSTRIAL HYDRAULICS, INJECTION MOULDING MACHINERY , ALUMINUM DIE-CASTING MACHINERY, SINTERING MACHINERY, STEEL MILLS, HYDRAULIC PRESSES, PAPER PROCESSING MOBILE HYDRAULICS, BUILDING MACHINERY, AGRICULTURAL FORESTRY, LIFTING & MATERIAL HANDLING EQUIPMENT |
| MATERIAL DESIGNATOR | STAINLESS STEEL – ASTM A 276 , ASTM 182 |
| STEEL – ASTM 108/A105, JIS G4051 S20C, S45C,/G3201 SF440A. | |
| BRASS – ASTM B16 UNS C36000 , ASTM B282 ALLOY 37700 , JIS H3250 C3604 , C3771 , JIS H3250 C3771. |















































































Z-Lok is a trusted Hydraulic SAE Flanges Manufacturer offering high-quality flanges designed for reliable hydraulic piping and fluid connection applications. Our SAE flanges are manufactured with precision to provide secure connections, excellent durability, and resistance to high pressure and vibration. Suitable for hydraulic systems, industrial machinery, construction equipment, and heavy-duty applications, Z-Lok SAE flanges are available in various sizes and configurations to meet different system requirements.









































| DESIGN | SAE J518 C / ISO 6162 / ISO 6164 / JIS B2291 |
|---|---|
| Material | CS, SS 304, SS 316, SS 316 TI, ALLOY STEEL, DUPLEX, SUPER DUPLEX, INCONEL, MONEL, HASTELLOY, SMO 254, 904 L, TITANIUM |
| WORKING PRESSURE | CS, SS 304, SS 316, SS 316 TI, ALLOY STEEL, DUPLEX, SUPER DUPLEX, INCONEL, MONEL, HASTELLOY, SMO 254, 904 L, TITANIUM |
| CODE | CODE 61 FLANGE (3000 PSI) & CODE 62 FLANGE (6000 PSI) |
| SIZE RANGE | 3/8″ (DN 10) TO 5″ (DN 125) |
| CONNECTIONS | BUTT WELD, SOCKET WELD, THREADED (BSPP, NPT, METRIC, JIC) |
| BODY TYPE | FORGED, BAR STOCK |
| FLANGE ACCESSORIES | O-RING, BOLT, NUT, WASHER |
| O-RING MATERAL | NITRILE, BUNA 90 SHORE, VITON 85-90 SHORE |
| BOLTS MATERIAL | HIGH TENSILE 8.8 GR, 10.9 GR, 12.9 GR, SS 304, SS316 |
| SURFACE | CARBON STEEL – BLACK PHOSPHATED, TRIVALENT ZINC PLATED, STAINLESS STEEL – ELECTROPLATING, NATURAL FINISH |
| APPLICATIONS | INDUSTRIAL HYDRAULICS, INJECTION MOULDING MACHINERY , ALUMINUM DIE-CASTING MACHINERY, SINTERING MACHINERY, STEEL MILLS, HYDRAULIC PRESSES, PAPER PROCESSING MOBILE HYDRAULICS, BUILDING MACHINERY, AGRICULTURAL FORESTRY, LIFTING & MATERIAL HANDLING EQUIPMENT |
Z-LOK is a trusted 37° Flare Fittings Manufacturer, providing superior quality flare fittings designed for safe and leak-free hydraulic and instrumentation connections. Precision manufactured and quality-tested, our 37° flare fittings offer high dimensional accuracy, reliability, and durability, even under extreme operating conditions and high pressure. Available in a variety of sizes, configurations, and materials, Z-LOK supplies reliable flare fittings with a 37° angle for industrial, hydraulic, automotive and fluid-controls systems.


















| 37 Degree Flare Standard | SAE J514 / ISO 8434-2 |
|---|---|
| Material | CS, MS, SS 304L, SS 304, SS 316L, SS 316, SS 316Ti (1.4571), Copper, Brass, Super Duplex, Duplex, Alloy 20, Monel, Inconel, 904L, Hastelloy, Titanium, 6MO, Aluminium |
| 37 Degree Flare Working Pressure | 100 Bar to 800 Bar |
| Size Range | 6 MM to 42 MM, 1/8″ JIC to 2″ JIC |
| Body Type | Forged, Bar Stock |
| 37 Degree Flare Accessories | O-Ring, Dowty Seal, Copper Washer, ED Seal, Cutting Ring, Nut |
| O-Ring & Seals | NBR (-35°C to 100°C), Viton (-25°C to 200°C), PTFE (-60°C to 240°C) |
| 37 Degree Flare Surface | Carbon Steel – Trivalent Zinc Plated, Yellow Plating, Black Phosphated Stainless Steel – Export Bright Finish, Short Blasted Finish, Electroplated Finish |
| Temperature | Steel – (-40°C to 120°C), Stainless Steel – (-60°C to 400°C), Brass – (-60°C to 175°C) |
| Equivalent Brands | Parker, Hy-Lok, DK-Lok, Stauff, Hydac, Voss |
| 37 Degree Flare Applications & Industries | Construction Equipment, Drilling Platforms, Hydro Power Plants, Machine Tools, Railway Technology, Shipbuilding, Wind Turbine, Mobile Hydraulic Equipment, Mining, Stationary Hydraulic Equipment, Industrial Hydraulics, Injection Moulding Machinery, Aluminium Die-Casting Machinery, Sintering Machinery, Steel Mills, Hydraulic Presses, Paper Processing, Mobile Hydraulics, Building Machinery, Agricultural Forestry, Lifting & Material Handling Equipment |
| Material Designator | Stainless Steel – ASTM A276, ASTM A182 Steel – ASTM A108/A105, JIS G4051 S20C, S45C, G3201 SF440A Brass – ASTM B16 UNS C36000, ASTM B282 Alloy 37700, JIS H3250 C3604, C3771, JIS H3250 C3771 |

| 37 Degree Flare Dash size | Inch size | 37 Degree Flare Thread Size | Male Thread O.D. (in) | Female thread O.D (in) | ||
|---|---|---|---|---|---|---|
| -2 | 1/8 | 5/16 – 24 | 5/16 | 0.031 | 9/32 | 0.027 |
| -3 | 3/16 | 3/8 – 24 | 3/8 | 0.038 | 11/32 | 0.034 |
| -4 | 1/4 | 7/16 – 20 | 7/16 | 0.044 | 13/32 | 0.039 |
| -5 | 5/6 | 1/2 – 20 | 1/2 | 0.050 | 15/32 | 0.045 |
| -6 | 3/8 | 9/16 – 18 | 9/16 | 0.056 | 17/32 | 0.051 |
| -8 | 1/2 | 3/4 – 16 | 3/4 | 0.075 | 11/16 | 0.069 |
| -10 | 5/8 | 7/8 – 14 | 7/8 | 0.088 | 13/16 | 0.081 |
| -12 | 3/4 | 1 1/16 – 12 | 11/16 | 1.006 | 1 | 0.098 |
| -14 | 7/8 | 1 3/16 – 12 | 1 3/16 | 1.019 | 1 1/8 | 1.010 |
| -16 | 1 | 1 5/16 -12 | 1 5/16 | 1.031 | 1 1/4 | 1.023 |
| -20 | 1 1/4 | 1 5/8 – 12 | 1 5/8 | 1.063 | 1 9/16 | 1.054 |
| -24 | 1 1/2 | 1 7/8 – 12 | 1 7/8 | 1.088 | 1 13/16 | 1.079 |
| -32 | 2 | 2 1/2 – 12 | 2 1/2 | 2.050 | 2 7/16 | 2.042 |
| 37 Degree Flare Size | Tube O.D. | T | T | ||
|---|---|---|---|---|---|
| mm | inch | Major thread mm | UN/ UNF | D1 mm | |
| 4 | 6 | 1/4 | 11.00 | 7/16-20 | 4.05 |
| 5 | 8 | 5/16 | 12.05 | 1/2-20 | 6.00 |
| 6 | 10 | 3/8 | 14.00 | 9/16-18 | 7.05 |
| 8 | 12 | 1/2 | 19.00 | 3/4-16 | 10.00 |
| 10 | 14, 15, 16 | 5/8 | 22.00 | 7/8-14 | 12.05 |
| 12 | 18, 20 | 3/4 | 27.00 | 1 1/16-12 | 15.05 |
| 14 | 22 | 7/8 | 30.00 | 1 3/16-12 | 18.00 |
| 16 | 25 | 1 | 33.00 | 1 5/16-12 | 21.05 |
| 20 | 28, 30, 32 | 1 1/4 | 41.00 | 1 5/8-12 | 27.05 |
| 24 | 35, 38 | 1 1/2 | 47.05 | 1 7/8-12 | 33.00 |
| 28 | 42 | 1 3/4 | 57.00 | 2 1/4-12 | 39.00 |
| 32 | – | 2 | 63.05 | 2 1/2-12 | 45.00 |
| 37 Degree Flare Thread Size | Assembly Torque (ft-lb) | Swivel Nut or Hose FFWR | Assembly Torque (in-lb) | Tube Connection FFWR |
|---|---|---|---|---|
| 2 | 2 – 4 | N/A | 35 – 45 | N/A |
| 3 | 5 – 7 | N/A | 65 – 75 | N/A |
| 4 | 11 – 13 | 2 | 130 – 150 | 2 |
| 5 | 14 – 16 | 2 | 165 – 195 | 2 |
| 6 | 20 – 22 | 1.25 | 235 – 265 | 1.5 |
| 8 | 43 – 47 | 1 | 525 – 575 | 1.5 |
| 10 | 55 – 65 | 1 | 650 – 750 | 1.5 |
| 12 | 80 – 90 | 1 | 950 – 1050 | 1.25 |
| 14 | 100 – 110 | 1 | 1200 – 1300 | 1 |
| 16 | 115 – 125 | 1 | 1400 – 1500 | 1 |
| 20 | 160 – 180 | 1 | 1900 – 2100 | 1 |
| 24 | 185 – 215 | 1 | 2250 – 2550 | 1 |
| 32 | 250 – 290 | 1 | 3000 – 3400 | 1 |
| 37 Degree Flare Thread Size | 37 Degree Flare Working Pressures | ||||
|---|---|---|---|---|---|
| Nom Inch Tube OD | SEA J1926/3/ ISO 11926-3 O-Ring Port and SEA J514 Flared Tube End Thread Size (Notes 1&2) | 37 Degree Unions, Flared Tube Ends and Bulkheads | 37 Degree Female Swivels. | ||
| psi | MPa | psi | MPa | ||
| 1/8 | 5/16-24 UNF | 5,000 | 34.05 | 5,000 | 34.05 |
| 3/16 | 3/8-24 UNF | 5,000 | 34.05 | 5,000 | 34.05 |
| 1/4 | 7/16-20 UNF | 5,000 | 34.05 | 4,500 | 31 |
| 5/16 | 1/2-20 UNF | 5,000 | 34.05 | 4,000 | 27.05 |
| 3/8 | 9/16-18 UNF | 5,000 | 34.05 | 4,000 | 27.05 |
| 1/2 | 3/4-16 UNF | 4,500 | 31 | 4,000 | 27.05 |
| 5/8 | 7/8-14 UNF | 3,500 | 24 | 3,000 | 21 |
| 3/4 | 1-1/16-12 UN | 3,500 | 24 | 3,000 | 21 |
| 7/8 | 1-3/16-12 UN | 3,000 | 21 | 2,500 | 17 |
| 1 | 1-5/16-12 UN | 3,000 | 21 | 2,500 | 17 |
| 1 1/4 | 1-5/8-12 UN | 2,500 | 17 | 2,000 | 14 |
| 1 1/2 | 1-7/8-12 UN | 2,000 | 14 | 1,500 | 10.05 |
| 2 | 2-1/2-12 UN | 1,500 | 10.05 | 1,125 | 8 |
| 37 Degree Flare Thread Size | 37 Degree Flare Working Pressures | ||
|---|---|---|---|
| Nom Inch Pipe O.0D.0 | Dryseal Pipe Thread (NPTF) Male and Female | Fittings With NPTF Pipe Threads | |
| psi | MPa | ||
| 1/8 | 1/8-27 | 5,000 | 34.05 |
| 1/4 | 1/4-18 | 4,000 | 27.05 |
| 3/8 | 3/8-18 | 3,000 | 21 |
| 1/2 | 1/2-14 | 3,000 | 21 |
| 3/4 | 3/4-14 | 2,500 | 17 |
| 1 | 1-11-1/2 | 2,000 | 14 |
| 1 1/4 | 1-1/4-11-1/2 | 1,150 | 8 |
| 1 1/2 | 1-1/2-11-1/2 | 1,000 | 7 |
| 2 | 2-11-1/2 | 1,000 | 7 |
| DESCRIPTION | BARSTOCK | FORGING | UNS GRADE | CASTING |
|---|---|---|---|---|
| Carbon Steel | A105 | A105 | K30504 | A216 WCB |
| Low Temp Carbon | A350 LF2 | A350 LF2 | K03011 | A352 LCB |
| High Yield Steel | A694 F60 | A694 F60 | K03014 | – |
| 3 1/2 Nickel Steel | A350 LF3 | A350 LF3 | K32025 | A352 LC3 |
| 5 Chrome, 1/2 Moly | A182 F5 | A182 F5 | K41545 | A217 C5 |
| 1 1/4 Chrome, 1/2 Moly | A182 F11 | A182 F11 | K11597 | A217 WC6 |
| 2 1/4 Chrome, 1 Moly | A182 F22 | A182 F22 | K21590 | A217 WC9 |
| 9 Chrome, 1 Moly | A182 F9 | A182 F9 | K90941 | A217 WC6 |
| 13 Chrome | A276 or A479 410 | A182 F6A | S41000 | A351 CA15 |
| 304 | A276 or A479 304 | A182 F304 | S30400 | A351 CF8 |
| 304L | A276 or A479 304L | A182 F304L | S30403 | A351 CF3 |
| 316 | A276 or A479 316 | A182 F316 | S31600 | A351 CF8M |
| 316L | A276 or A479 316L | A182 F316L | S31603 | A351 CF3M |
| 317L | A276 or A479 317L | A182 F317L | S31703 | A351 CG8M |
| 321 | A276 or A479 321 | A182 F321 | S32100 | – |
| 347 | A276 or A479 347 | A182 F347 | S34700 | A351 CF8C |
| 17-4PH | – | A564 630 | S17400 | – |
| Alloy 400 | B164 N04400 | B564 N04400 | N04400 | A494 M35-1 |
| Alloy K500 | B865 N05500 | – | N05500 | – |
| Alloy 800 | B408 N08800 | B564 N08810 | N08800 | – |
| Alloy 825 | B425 N08825 | – | N08825 | – |
| Alloy 600 | B166 N06600 | B564 N06600 | N06600 | A494 CY40 |
| Alloy 625 | B446 N06625 | B564 N06625 | N06625 | A494 CW 6MC |
| Alloy B2 | B335 N10665 | B564 N10665 | N10665 | A494 N 12MV |
| Alloy C | – | – | N10002 | A494 CW6M |
| Alloy C22 | B574 N06022 | B574 N06022 | N06022 | A494 CX2MW |
| Alloy C276 | B574 N10276 | B564 N10276 | N10276 | A494 CW12 MW |
| 22% Duplex | A276 or A479 S31803 | A182 F51 | S31803 | A890 Gr 4A |
| 25% Duplex | A276 or A479 S32750 or 60 | A182 F53 | S32750 or 32760 | A890 Gr 6A |
| 254SMO | A182 F44 | A182 F44 | S31254 | A351 CK3MCuN |
| 904L | B649 N08904 | B625 N08904 | N08904 | – |
| Titanium | B348 Gr 2 | B381 F2 | R50400 | B367 C2 |
| 37 Degree Flare Thread Type | Code |
|---|---|
| ISO Tapered Thread (BSPT) | RT |
| NPT Thread | N |
| SAE/MS Straight Thread | SE |