BSP Swivel Female x UNO O-Ring Boss Male Straight Adaptor

BSP swivel female one end, SAE O-ring boss male the other. The standard way a BSP hose gets into the UNO ports on American pumps, motors and valve banks.

Brand: Ayrtec – mild steel body with a plated finish, manufactured to the standards listed below.

Watch: 90 ° Hydraulic Adaptors How They Work and the Importance of O'Rings

Thread Standards

• BSP Swivel Female – BSPP to ISO 228 with a 60° internal cone seat. It seals on the cone and swivels, so it needs no tape or sealant.
• SAE O-Ring Boss Male (UNO/UNF) – SAE J1926 / ISO 11926 straight thread O-ring boss. It seals on an O-ring squeezed against the port spotface, not on the thread.

How to Choose

• The UNO male seals on its O-ring against the port spotface. The thread does no sealing, so leave the tape in the drawer.
• The BSP swivel female seals on its 60° cone and turns freely.
• A UNO male will start into a BSPP port and strip. Both are straight threads with different pitches, so check the callout.

Technicians Advice

Ease the O-ring over the UNO thread with a smear of clean oil, wind it until the ring just kisses the spotface, then take it the specified turn and stop. Going past that extrudes the ring out the side.

Where You’ll Find It

• BSP Swivel Female – Hose ends across Australian-built assemblies, and anywhere a joint has to be broken and remade repeatedly.
• SAE O-Ring Boss Male (UNO/UNF) – Cylinder end caps, pump and valve bosses on US-built plant. Common on Australian-assembled cylinders too, where it is usually called UNO.

Cross-Reference

• BSP Swivel Female – BSPP body to ISO 228 with a 60° cone seat. Commonly called a BSP swivel or BSP female cone seat.
• SAE O-Ring Boss Male (UNO/UNF) – SAE J1926 / ISO 11926 straight thread O-ring boss. Also written ORB, SAE ORB or UNO. Thread form is UN/UNF.

Parker, Gates, Aeroquip and Ryco all manufacture to these same standards under their own part numbering, so a fitting built to the standard above will mate with theirs.

Cross-references are given at series level as a guide to the standard, not as a part-for-part substitution. Always confirm the thread form, size and seal type against the port before ordering.

📐Dimensions & thread sizes – every size in this range

← Swipe the table sideways to see every measurement →

Part code	A	B	L	H	H1	Material	Finish
BSF-UNM-0407	7/16" UNO	1/4" BSPP	29mm	19mm	17mm	Mild steel	Plated finish
BSF-UNM-0409	9/16" UNO	1/4" BSPP	30mm	19mm	17mm	Mild steel	Plated finish
BSF-UNM-0609	9/16" UNO	3/8" BSPP	32mm	22mm	22mm	Mild steel	Plated finish
BSF-UNM-0612	3/4" UNO	3/8" BSPP	31mm	22mm	22mm	Mild steel	Plated finish
BSF-UNM-0614	7/8" UNO	3/8" BSPP	36mm	22mm	27mm	Mild steel	Plated finish
BSF-UNM-0812	3/4" UNO	1/2" BSPP	33mm	27mm	22mm	Mild steel	Plated finish
BSF-UNM-0814	1/8" UNO	1/2" BSPP	38mm	27mm	27mm	Mild steel	Plated finish
BSF-UNM-1217	1.1/16" UNO	3/4" BSPP	41mm	32mm	42mm	Mild steel	Plated finish
BSF-UNM-1617	1.1/16" UNO	1" BSPP	49mm	38mm	38mm	Mild steel	Plated finish
BSF-UNM-1621	1.5/16" UNO	1" BSPP	49mm	38mm	38mm	Mild steel	Plated finish

Key: L overall length, H centre to face, H1 centre to face 2. Measurements in millimetres unless shown otherwise. Thread columns show what each end mates with. Dimensions are nominal – check critical clearances against the part.

Downloads

📄 Thread Identification Chart (PDF)

Same Threads, Other Angles

🔗 90° Compact – same threads

Express shipping Australia-wide. We dispatch daily to New South Wales, Victoria, Queensland, Western Australia, South Australia, Tasmania, the Australian Capital Territory and the Northern Territory – Sydney, Melbourne, Brisbane, Perth, Adelaide, Hobart, Canberra and Darwin, plus regional and remote sites.

Need a hand? Call 1300 146 737 or email sales@mhfgc.com.au – real technicians, real answers.