Reference use only
FittingKey is an independent reference for identifying hydraulic and pneumatic fittings. Its dimensions are transcribed from published standards and from manufacturer and distributor identification charts, cross-checked against at least two independent publishers per row, and listed with their sources on the sources page along with every disagreement and every gap. It is an aid to identification and ordering. It is not a substitute for the manufacturer specification for the part you are actually fitting.
Pressure ratings and safety
Working pressures on this site are published only where two independent sources give the same figure under conditions they both state, and every one is shown with those conditions - material, design factor, and whether the stud is straight or adjustable. Where no two sources agreed, no figure is published at all rather than a generic one.
A pressure rating belongs to a specific part in a specific material, and a fitting with two different ends is only ever as strong as its weaker end. Hydraulic systems store large amounts of energy and a failed connection can injure people. Confirm every rating, every material and every assembly torque against the manufacturer specification for the exact part before a system is charged.
No warranty
FittingKey is provided "as is", without warranty of any kind, express or implied. We accept no liability for losses, damage or injury arising from its use. Do not rely on it alone for safety-critical, load-bearing, aerospace or regulated work.
Not affiliated with any standards body or manufacturer
FittingKey is independent. It is not affiliated with, endorsed by, approved by or connected to SAE International, ISO, ASME, DIN, JIS, BSI, or any fitting manufacturer or distributor. Standard designations and manufacturer names are used only to refer to the published documents and products themselves.
Premium
Premium features are sold through RevenueCat and Stripe and are subject to their terms. Subscriptions renew automatically and can be cancelled anytime from the link in your receipt email; lifetime is a one-time payment. See Premium and Privacy for details.
Refunds
Not happy with a purchase? Email socialreminderinfo@gmail.com within 14 days of a first purchase, or within 7 days of a renewal, and we will refund it. Send the message from the email address you used at checkout, and include:
- the email address used at checkout (if you are writing from a different address)
- your access code, shown on the Premium page while you are signed in on the browser you purchased from
- roughly when you purchased, and which plan (weekly, yearly or lifetime)
- the last 4 digits of the card, if you have the receipt handy
That is everything needed to find the purchase and process the refund. This policy does not limit any statutory rights you may have.
Contact
Questions, or a figure here that disagrees with a document you have? Email socialreminderinfo@gmail.com.