SAME DAY SHIPPING
— Order by 2pm EST.
Toggle Nav
Cart
Search
main product photo

Stainless Steel Duolok Tube Fitting, 0.63 Inch Tube OD To 1/2-14 Male NPT, Straight

Ask A Question

Description & Features

Engineered from 316 stainless steel Duolok fittings ensure a dependable leak-proof connection for instrumentation and process tubing systems. The innovative double ferrule design adapts to varying tubing materials hardness and wall thickness providing reliable leak-tight connections across diverse applications.

These fittings manufactured and quality controlled to be gaugeable offer sufficient pull-up during initial installation. The interchangeability feature ensures compatibility with Swagelok brand tube fittings facilitating versatile usage.

Typically Duolok fittings match the maximum allowable working pressures of the recommended stainless steel tubing. Note that specially designed bored-through AN O-Ring Seal and SAE integral end fittings may exhibit lower pressure ratings.

Constructed to function in a wide range of temperatures these fittings maintain performance even in extreme conditions though elevated temperatures may reduce the maximum working pressure capability. Certified material test reports (CMTRs) are available ensuring traceability and compliance with ASTM standards.

For detailed assembly instructions application assistance and safety information please get in touch.

MPN: ISSD10MC8

Supplier Part Number: ISSD10MC8

Specifications

Brand
SSP
b Dimensions
1.53 in
Connection Size 1
5/8 in
Connection Size 2
1/2 in
Connection Type
MNPT, Tube
Connection Type 1
Tube
Connection Type 2
Male NPT
d Dimensions
0.96 in
Dimensions
1.93 in L
e Dimensions
0.47 in
Fitting Type
Connector
Hex Size
1 x 15/16 in
Material
Stainless Steel
Material Construction
316 Stainless Steel
Series
MC Series
Sg Gageability
Duolok® Tube Fittings are Designed, Manufactured and Quality Controlled to be Gaugeable for Sufficient Pull-up During Initial Installation
Sg Interchangeability
Duolok® Tube Fittings are Designed, Manufactured and Quality Controlled to be Totally Interchangeable with the Swagelok® Brand of Tube Fittings
Sg Pressure Rating
Generally, Duolok® Tube Fittings are Rated for Pressures Equal to the Maximum Allowable Working Pressures of the Tubing Recommended for Use with the Fittings (Stainless Steel Tubing), Some Specially Designed Fittings, Bored-through Fittings, an Fittings,
Sg Temperature Factors
Duolok® Tube Fittings Function Reliably in an Extremely Wide Range of Operating Temperatures, Elevated Temperatures will Reduce the Maximum Working Pressure Capability of the Tubing System, for Applications at Elevated Temperatures
Thread Size
1/2-14

Similar Products

Model Number T Thread Size A b Dimensions d Dimensions e Dimensions Price Action
Stainless Steel Duolok Tube Fitting, 0.25 Inch Tube OD To 1/4-18 Male NPT, Straight

ISSD4MC4 Stainless Duolok To NPT Fitting

0.25

1/4-18

1.49

1.2 in

0.6 in

0.19 in

Stainless Steel Duolok Tube Fitting, 0.38 Inch Tube OD To 3/8-18 Male NPT, Straight

ISSD6MC6 Stainless Duolok To NPT Fitting

0.38

3/8-18

1.57

1.28 in

0.66 in

0.28 in

Product Questions & Answers (3)

Question by: Phil A on Dec 26, 2025, 6:06 PM
these fittings interchangeable with Swagelok? got some existing lines already using that brand and wanna make sure i don't have to swap everything out
Answer by: Customer Support on Dec 28, 2025, 6:51 AM
Duolok fittings are manufactured and quality controlled to be fully interchangeable with Swagelok brand tube fittings, so mixing them in an existing system is not a problem. The double ferrule design follows the same pull-up and gageability standards, which means you can swap in this fitting without reworking the surrounding connections.
Question by: Janet C on Mar 31, 2025, 10:42 AM
got a 5/8 tube line, is this the right straight fitting to go over to 1/2-14 male npt?
Answer by: Customer Support on Apr 2, 2025, 8:23 AM
The tube side is 0.63 inch tube OD and the thread side is 1/2-14 male NPT, in a straight body. It is a Duolok double ferrule tube fitting, so it is meant to make a leak-tight connection on the tubing when it is pulled up correctly.
Question by: Janet E on Dec 5, 2025, 6:18 PM
What kind of temperatures can this fitting handle without any issues?
Answer by: Customer Support on Dec 7, 2025, 10:11 AM
These Duolok tube fittings are able to function reliably across a wide range of operating temperatures. Keep in mind that elevated temperatures may reduce the maximum working pressure capability of the tubing system.

Tell us what you need and we'll get back to you.

Fields marked * are required.