Tube Fitting Cross-Reference & Interchange Lookup Tool

The tube fitting cross-reference tool works as an interchange lookup: it maps a competitor instrumentation-fitting part number, Swagelok®, Parker A-Lok®/CPI®, Hy-Lok®, Hoke®, Gyrolok®, Fitok®, DK-Lok®, Ham-Let®/Let-Lok®, Superlok®, Tylok®, SSP® or Brennan series, to its dimensionally interchangeable Crestflo equivalent, available in stainless or exotic alloy. Enter your part number or brand series. The tool then routes you to the matching brand cross-reference, the master interchange chart, and a request form for your verified equivalent. The interchange basis is stated up front: ASTM F1387, the performance-qualification standard for compression tube fittings.

This tool cross-references instrumentation tube fittings, compression fittings and ferrules, stainless and alloy fluid-system components. It doesn't cover hydraulic JIC/ORFS adapters for mobile equipment, and it doesn't cover electrical wire ferrules. Each result is an interchange equivalent, never an OEM part, and it turns straight into an RFQ.

Reviewed by the Crestflo Engineering Team

Also Known As: Interchange Lookup, Part-Number Cross Reference & Equivalent Finder

Buyers ask for this feature under a lot of different names: cross-reference tool, interchange tool, interchange lookup, part-number lookup, part-number cross reference, tube fitting part number lookup, competitor part-number lookup, instrumentation fitting cross reference, equivalent-part finder, fitting equivalent finder, tube fitting cross reference tool, fitting cross reference tool, crossref tool, interactive cross-reference chart, tube fitting comparison chart, tube fitting cross reference guide, compression fitting cross reference, ferrule cross reference, tube fitting interchange, tube fitting equivalent, fitting interchange chart, or just "find my Crestflo equivalent" and "reverse cross reference." Whatever the label, it answers one question: competitor part number goes in, Crestflo equivalent comes out. Doesn't matter if the fitting is a double-ferrule or single-ferrule tube fitting, a nut and ferrule set, a face-seal (VCR/VCO) fitting, or a cone-and-thread high-pressure fitting.

It works the other direction too. Crestflo to competitor, for engineers who need to document an installed base already in place.

How the Cross-Reference Works: Match on Dimensions, Connection & Material

The lookup runs in three plain steps, and it matches on engineering fit, not on a name:

1. Find your part number. Read the competitor part number or series off the fitting, the drawing or the bill of materials.
2. Search or select the brand. Enter the number or pick the brand; the tool routes you to that brand's dedicated cross-reference page and the master interchange chart.
3. Review and request the Crestflo equivalent. Confirm tube OD, end connection and thread, alloy and ferrule type, then request the verified equivalent on your RFQ.

Crestflo's matching logic depends on three things lining up at once: tube outside diameter, end connection and thread, and material. Verified competitor-to-Crestflo part numbers are proprietary and get confirmed per order, so the tool won't publish a static number-for-number table. Instead, it routes your equivalent through the engineering team, who check the mapping against your exact configuration. If JavaScript is off, don't worry, the brand list, parity tables and standards references below are HTML-native and still answer the question without the widget.

Brands We Cross-Reference: Swagelok®, Parker, Hy-Lok, Hoke, Fitok & More

Crestflo's tool cross-references the major instrumentation fitting brands. Each brand routes to its own cross-reference page, and the full chart lives on the master interchange chart. All third-party names are trademarks of their respective owners, listed here only for identification.

For the positioning narratives, see the Swagelok alternative and Swagelok vs Crestflo pages, plus the matching Parker A-Lok, Hy-Lok, Hoke and Fitok comparisons. The full editorial hub sits at the tube fitting cross reference silo.

What the Tool Matches: Tube OD, Thread & Connection Parity

The lookup checks connection and size parity across imperial and metric systems, plus the common instrumentation thread standards. The values below are the standard published designations; the tool confirms the exact parity for your part on the quote.

Crestflo cross-references end connections up to 2″ (50 mm) OD for fittings, and instrumentation valves from 1/16″ to 1″. Sizing and wall thickness need a separate calculation; the tube pressure & wall-thickness calculator handles that. Thread call-outs can be confirmed with the thread identifier.

Cross-Reference Beyond Stainless: Exotic-Alloy Interchange

Crestflo delivers in 6–8 weeks; the majors typically quote 20-plus weeks for the same corrosion-resistant alloys. That gap is the differentiator. Alloy coverage goes beyond 316 and 316L stainless, and the tool cross-references interchange across that broader range. Each alloy routes to its own material page for composition and properties.

To choose the right grade for your service, cross-reference it first with the alloy selector from Crestflo.

The Interchange Standard: Why "Interchangeable," Not "Compatible"

Interchange claims mean nothing without an objective basis. Crestflo qualifies its compression tube fittings to ASTM F1387, the performance-qualification standard for compression tube fittings. That's why every result gets described as dimensionally interchangeable, an equivalent, a dimensional drop-in replacement and never anything vaguer. F1387 gives an engineering basis for claiming a Crestflo part performs as a full-assembly replacement for the referenced brand. Instrumentation valves get qualified to their own applicable standards instead: ASME B16.34 and the relevant API pressure-test standards, not F1387, since F1387 is a compression-fitting standard.

Cross-references show that full assemblies swap dimensionally with one another. Mixing individual components across brands within a single fitting isn't something we recommend; specify a complete Crestflo assembly instead.

Request Your Cross-Reference: Get the Verified Crestflo Equivalent

Because Crestflo confirms competitor part-number equivalents per configuration, the engineering team issues the match itself rather than publishing a static chart. Send along the competitor part number, series, or a drawing, and you'll get your matched Crestflo equivalent on the quote, checked against tube OD, connection, thread, alloy and ferrule type.

• Request your Swagelok® / Parker® cross-reference: send the part number or drawing, and you'll get back the Crestflo equivalent.
• Request a sample: confirm the interchange works before you convert a whole program.
• Become a distributor: line-card details and stocking terms.

Once you have the equivalent, request it across the range: instrumentation tube fittings, single-ferrule fittings, ferrules and nut-and-ferrule sets, face-seal (VCR/VCO) fittings, cone-and-thread high-pressure fittings and instrumentation valves. To spec a Crestflo part from scratch instead, use the part-number configurator; to compare landed cost after tariff, use the landed-cost calculator. Datasheets and CAD models are available to customers on request.

Standards, Certification & Traceability Behind Every Interchange

Every version comes with the standards and traceability that let people actually verify the exchange.

• Fittings: performance-qualified to ASTM F1387 for dimensional drop-in interchange; NACE-compliant per NACE MR0175 / ISO 15156 where sour service applies.
• Valves: qualified to ASME B16.34 and the applicable API pressure-test standards for their type.
• Traceability: a heat/lot number is marked on every part, with EN 10204 3.1 material test certificates as standard and 3.2 on request, see EN 10204 MTC, plus positive material identification (PMI).

Crestflo holds ISO 9001, ISO 14001 and ISO 45001 certification, along with PED. Material comes from Indian mills as standard. Need US or European melt instead? That's available on request, and we back it with full material traceability; see US-origin & compliance for how TAA and DFARS requirements are handled. We keep certificates on file and send them along with every order.

Crestflo is an independent manufacturer. We're not affiliated with, endorsed by, or sponsored by any manufacturer listed here. All product names, trademarks and brands belong to their respective owners and appear solely for identification. Cross-references point to dimensional interchange only.

Why Crestflo for Your Interchange

Crestflo is the only place that can match an F1387-qualified instrumentation equivalent across every major brand, Swagelok, Parker, Hy-Lok, Hoke, Fitok, DK-Lok, Ham-Let and more, in stainless or exotic alloy, and it turns the lookup straight into a quote. Compression fittings carry ASTM F1387 qualification, so the dimensional drop-in interchange is genuine. Valves meet ASME B16.34 and the applicable API standards.

Interchange isn't limited to 316/316L. It extends across super duplex, 254 SMO, AL-6XN, Inconel, Incoloy, Monel, Hastelloy and titanium, in both imperial and metric sizes, with hardened or non-hardened ferrules. Small MOQ and private-label programs are on offer. Every part ships with heat-number traceability and EN 10204 3.1/3.2 certificates. Delivery runs from ready stock for standard items to made-to-order for specials, landing in 6-8 weeks against the 20-plus weeks typical for the majors, and it stays cost-competitive after US duties.

Crestflo is the instrumentation division of a four-decade-old, Government-of-India-recognized export house with a track record of delivery across the Middle East. Reach the engineering team at sales@crestflousa.com / +1 346 594 9005 (Houston, TX). We Engineer Confidence.

Frequently Asked Questions

Related Tools, Cross-References & Standards

• Tools: part-number configurator · alloy selector · thread identifier · tube pressure calculator · landed-cost calculator · all tools
• Cross-reference: master interchange chart · Swagelok alternative · Swagelok alternatives · cross-reference hub
• Standards: ASTM F1387 · ASME B16.34 · EN 10204 MTC · NACE MR0175 · all standards
• Products & quality: tube fittings · face-seal fittings · US-origin & compliance