BSPT Male Fitting: 13011-SP(PO) Series

Why This BSPT Male Fitting Passes the Compliance Gate

A BSPT male fitting is a one-piece hose end whose port side is a male taper thread from the R series (British Standard Pipe Taper) and whose hose side is a multi-barbed push-on tail. The 13011-SP(PO) series from HENGHUA covers six part numbers from -04 to -12 with R-series taper threads from R1/8″ to R3/4″. Each unit is cold-forged from carbon steel, plated, and batch-inspected before shipment. For OEM buyers this fitting is a compliance gate; for maintenance teams it is the fast BSPT termination for low-pressure lines that needs no crimping machine on site.

• BSPT taper thread (R series): the male thread is tapered and seals by thread interference per ISO 7-1, so a thread sealant (PTFE tape or pipe dope) is applied before assembly. An R taper thread must never be interchanged with a parallel G (BSPP) thread, which seals by a cone, washer, or O-ring instead.
• Push-on hose tail: the multi-barbed tail grips the hose bore directly; the hose is pushed on with lubricant until it seats against the shoulder. No crimping machine or ferrule is needed, which makes field repair fast.
• Low-pressure service: push-on barbed terminations are engineered for low-pressure lines such as return, drain, air, lubrication, coolant, and suction service. They are not for high-pressure hydraulic power circuits.
• Centre hexagon: the drawing shows one hexagon, S1, between the threaded section and the hose tail, giving a solid wrenching point for tightening and removal.
• OEM gate check: full dimensional and material conformance with taper thread form per ISO 7-1, with material test reports (MTR) available for every batch.

Core Advantages

1. No crimping machine needed: push the hose on and tighten the thread; a workshop or a field service van can fit these without a crimp press.
2. Taper thread seal: the R thread seals by interference, which is the standard taper connection on European-style low-pressure circuits and air systems.
3. Six sizes, R1/8″ to R3/4″: covers small-bore return, drain, air, lubrication, and coolant lines.
4. Fast replacement: a leaking push-on joint is replaced by cutting the hose square and pushing on a new fitting, with no waiting for a crimp station.
5. Plated for corrosion resistance: trivalent zinc plating as standard, with zinc-nickel and Dacromet options for aggressive environments.

Technical Specifications

What Is This BSPT Male Fitting?

This BSPT male fitting joins a low-pressure hose to a male taper thread connection. The port end is a male R-series taper thread (British Standard Pipe Taper, thread form per ISO 7-1): the thread diameter reduces toward the tip, so the flanks wedge together as the fitting is tightened, and the metal-to-metal interference is what seals the joint. Because the seal depends on interference, a thread sealant such as PTFE tape or pipe dope is applied before assembly. This is fundamentally different from a parallel G (BSPP) thread, which is cylindrical and seals by a separate element: a 60° cone, a bonded washer, or an O-ring. An R thread and a G thread are not interchangeable, and the two sealing principles must never be mixed on one joint.

The hose side of the fitting is a multi-barbed push-on tail. The barbs are sized to grip the hose bore, and the hose is pushed on until it seats against the collar behind the barbs. Assembly needs no ferrule, no crimp die, and no machine: cut the hose square, lubricate, and push. Because the barbed grip is mechanical rather than crimped, push-on terminations are used on low-pressure service: return and drain lines, tank lines, air and pneumatic circuits, lubrication and coolant lines, and suction lines where the hose construction is matched to the pressure. Push-on fittings are not engineered for high-pressure hydraulic power circuits; select a crimped termination for those lines.

The single hexagon S1 sits between the threaded section and the hose tail, giving a firm wrenching point when you tighten the fitting into its port and when you remove it. The series covers six sizes from -04 to -12; the part numbers in the table are the standard executions of the SP(PO) program. Confirm your hose construction and working pressure with our engineers and the correct barb size will be confirmed before shipment.

Dimensional Data and Threads

Full dimension drawings with A, C, and S1 callouts are supplied as PDF and CAD (STEP/DWG) files.

Full Dimension Table (Part Number Matrix) {#by-thread-size}

Read the table with your taper thread (E) and your hose size (dash). The part number is the order code; copy it directly into your inquiry or purchase order. The pattern is 13011-[thread dash]-[hose dash]SP(PO): for example, 13011-08-08SP(PO) has an R1/2″ thread and suits a -08 (12 mm) hose.

The dimensions shown are the standard executions of the 13011-SP(PO) series as drawn on the factory specification sheet. If your hose needs a different barb profile, a custom BSPT male fitting is machined on request.

Select by Hose Size {#by-hose-size}

Match your hose bore first, then confirm the thread for that bore:

Material and Surface

Cold forging preserves the grain flow of the steel. Each production batch is inspected and recorded, so the inspection record matches the parts you receive.

Working Pressure

The exact working pressure for your part number and hose combination is confirmed on the datasheet and by our engineers before shipment. Push-on terminations are not for high-pressure hydraulic power circuits.

Operating Temperature

The steel fitting operates across the normal temperature range of low-pressure circuits. In service, the practical limit is set by the hose and any elastomer in the system; confirm your fluid and temperature range with our engineers.

Selection and Ordering

The 13011-SP(PO) BSPT male fitting series covers the taper-thread push-on segment of BSP hydraulic hose fittings for low-pressure lines, so most orders can be placed directly from the table above.

BSPT Thread Size Chart

Use this chart to identify the taper thread on your port. R threads are tapered and are identified by measuring the thread diameter and counting the threads per inch; the taper makes the diameter reduce toward the tip.

BSPT vs BSPP Quick Check

R (BSPT) taper threads seal by interference and need PTFE tape or pipe dope. G (BSPP) parallel threads are cylindrical and seal by a cone, washer, or O-ring. The two are not interchangeable, and mixing them on one joint will leak.

Cross Reference Service {#by-oem-part-number}

Most maintenance teams buy against a legacy part number printed on the old drawing. Send us the OEM or distributor part number you currently use, with a photo of the fitting if possible. Our engineers identify the thread, the barb profile, the hose size, and the body configuration, then confirm the exact 13011-SP(PO) equivalent before you place the order. The service covers BSPT fittings, BSP hydraulic hose fittings, and the taper-thread ends of your inventory, and interchange confirmation is free. The cross reference sheet is returned in PDF for your records.

Packaging and Logistics

Assembly and Use Guide

Push-On Assembly in Three Steps

1. Cut the hose square: use a sharp hose cutter so the end is clean and square; a ragged end will not seat evenly over the barbs.
2. Lubricate and push: apply a thin film of assembly lubricant to the barbs and the hose bore, then push the hose onto the fitting until it seats firmly against the collar. The barbs must be fully covered by the hose.
3. Check and pull-test: pull the hose to confirm the barbs are engaged, then fit the thread end with sealant and tighten the fitting into the port.

Threading the BSPT End

Wrap PTFE tape clockwise around the taper thread (or apply pipe dope) before assembly. Thread the fitting into the port by hand until the thread bites, then tighten with a wrench on the S1 hexagon. The taper thread seals by interference; do not over-tighten past the manufacturer’s recommended engagement, because the wedge force grows quickly on taper threads.

Installation Warnings

• ❌ Never interchange R (BSPT taper) threads with G (BSPP parallel) threads. They are different sealing systems and are not compatible.
• ❌ Never use push-on barbed fittings on high-pressure hydraulic power circuits. They are engineered for low-pressure service only.
• ❌ Never reuse a fitting after the hose has been pulled off; the barbs may be damaged.
• ❌ Never assemble a push-on fitting without lubricant; dry assembly can damage the hose bore.
• ❌ Never apply thread sealant to the barbs; sealant goes on the taper thread only.
• ✔ After assembly, pressure-test the circuit and inspect all joints for weepage.

OEM Customization and Quality Traceability

Customization Options

• Barb and size customization: non-standard barb profiles and special stem lengths machined to your drawing.
• Surface treatment customization: trivalent zinc (96 h), zinc-nickel (720 h), or Dacromet (1000 h) salt spray grades.
• Laser marking: your logo, part number, and batch code laser-marked on the hex for full field traceability.
• Material options: 304/316L stainless for chemical, marine, and food-contact circuits, with passivation certificates.

Quality and Traceability System

Every batch follows a documented flow: incoming steel with mill certificate → cold forging → CNC machining → plating → 100% thread gauge and dimension inspection → pressure test → laser marking → packing. The batch number on the carton links back to the raw material lot and the inspection report. Material test reports (MTR) are provided with every order on request, and third-party inspection reports (BV/SGS) can be arranged before shipment.

FAQ

Q: What is a BSPT male fitting? A: It is a one-piece fitting whose port end is a male R-series taper thread (ISO 7-1) and whose hose end is a multi-barbed push-on tail for low-pressure hose.

Q: How does a BSPT thread seal? A: The R thread is tapered, so the flanks wedge together as the fitting is tightened and the metal-to-metal interference seals the joint. Thread sealant such as PTFE tape or pipe dope is applied before assembly.

Q: What is the difference between BSPT (R) and BSPP (G) threads? A: R threads are tapered and seal by thread interference with sealant. G threads are parallel and seal by a separate element: a 60° cone, a bonded washer, or an O-ring. The two are not interchangeable.

Q: What is the difference between a push-on fitting and a crimp fitting? A: A push-on fitting grips the hose bore with barbs and needs no ferrule or crimping machine. A crimp fitting compresses a ferrule over the hose with a machine and is used for higher-pressure lines. Push-on terminations are for low-pressure service.

Q: What service is the 13011-SP(PO) series for? A: Low-pressure lines such as return, drain, tank, air, lubrication, coolant, and suction service, with the hose matched to the pressure. They are not for high-pressure hydraulic power circuits.

Q: Can you confirm the fitting for my hose? A: Yes. Send us your hose construction, bore size, and working pressure, and our engineers will confirm the correct barb size and part number before shipment.

Request a Quote

Tell us the taper thread, the hose size, the hose construction, the working pressure, and the annual quantity. Whether you need stock BSP hydraulic hose fittings for distribution or a custom BSPT male fitting for an OEM program, the quoting process is the same. For replacement orders, send the legacy part number and a photo, and our engineers will confirm the interchange before quoting. Every BSPT male fitting leaves the HENGHUA factory batch-tested and backed by a written warranty. Request your quote or drawing pack today, and we will respond within 24 hours.