BSPT Male Fitting: 13013-SP Series

Why This BSPT Male Fitting Passes the Compliance Gate

A BSPT male fitting is a hose fitting whose port side is a male taper thread from the R series (British Standard Pipe Taper) and whose hose side is a ribbed stem for a crimped termination. The 13013-SP series from HENGHUA is the large-size heavy-duty execution of this family, covering five part numbers from -12 to -32 with R-series taper threads from R3/4″ to R2″. Every unit is cold-forged from carbon steel, heat-treated, plated, and 100% pressure tested before shipment. For OEM buyers this fitting is a compliance gate; for maintenance teams it is the crimped BSPT termination that carries the big lines on mobile and industrial machines.

• 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.
• Large-bore coverage: -12 to -32 with hose bores DN 20 to DN 50 covers the big lines on excavators, loaders, drilling rigs, presses, agricultural equipment, and plant hydraulics where R taper ports are specified.
• Heavy-duty execution: the ribbed stem is machined on the heavy stem profile of the family, matched to the reinforcement layers of the hose construction you run.
• Centre hexagon: the drawing shows one hexagon, S1, between the threaded section and the hose stem, 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. Taper thread seal: the R thread seals by interference, which is the standard taper connection on European-style circuits, agricultural equipment, and marine hydraulics.
2. Factory-grade crimped hose end: the braided hose is permanently attached by crimping, so the assembly carries the rated pressure of the hose.
3. Five part numbers cover the big lines: R3/4″ to R2″ with DN 20 to DN 50 hose bores, matched to the heavy end of the BSPT crimp range.
4. Crimp data supplied: every order includes insert depth, crimp outside diameter, and die selection for your hose series.
5. 96 to 1000 h salt spray options: trivalent zinc (96 h), zinc-nickel (720 h), or Dacromet (1000 h), matched to your environment.

Technical Specifications

What Is This BSPT Male Fitting?

This BSPT male fitting joins a 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 ribbed stem that is crimped onto the hose with a steel ferrule. Crimping produces a permanent, factory-grade attachment that lets the assembly carry the working pressure of the hose, which is why the taper-thread family with crimped ends is used across agricultural and construction machinery, marine hydraulics, and general industrial circuits where R taper ports are specified. The single hexagon S1 sits between the threaded section and the hose stem, giving a firm wrenching point when you tighten the fitting into its port and when you remove it.

The 13013-SP is the large-size member of the BSPT male crimp family. The base 13011-SP series spans the full spread from R1/8″ to R2″, while the 13013-SP line concentrates on the heavy-duty executions from R3/4″ to R2″ with its own stem geometry and part numbers. Use this fitting when your big lines terminate on R taper ports. The series covers five sizes from -12 to -32; confirm your hose construction with our engineers and the matching crimp data sheet is supplied with the order.

Dimensional Data and Threads

Full dimension drawings with A, C, and S1 callouts are supplied as PDF and CAD (STEP/DWG) files. Because this is a crimp fitting, the two process-critical parameters are the hose insert depth and the crimp outside diameter; both are hose-series specific and are listed in the crimp data sheet that accompanies every order.

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 13013-[thread dash]-[hose dash]SP: for example, 13013-16-16SP has an R1″ thread and suits a -16 (25 mm) hose.

The dimensions shown are the standard executions of the 13013-SP series as drawn on the factory specification sheet. If your hose construction needs a different stem profile, a custom BSPT male fitting is machined on request.

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

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

Material and Heat Treatment

Cold forging preserves the grain flow of the steel, which raises fatigue resistance under pressure pulsation. Each heat-treatment batch is hardness-tested and recorded, so the hardness number on the MTR matches the parts you receive.

Working Pressure

The exact rating for your part number and hose combination is confirmed on the datasheet and by our engineers before shipment.

Pressure-Temperature Operating Envelope

The steel body holds full rated pressure across the whole temperature window. In a crimped assembly the working pressure is governed by the weakest component, normally the hose; use the hose derating curve for the system, and the fitting will not be the limiting part.

Selection and Ordering

The 13013-SP BSPT male fitting series covers the large-bore taper-thread segment of BSP hydraulic hose fittings, 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 stem profile, the hose size, and the body configuration, then confirm the exact 13013-SP 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

Four-Step Crimping Procedure

1. Cut the hose square: use a hose cutter, never a hacksaw or an angle grinder. A square, clean end is the precondition for a uniform ferrule grip.
2. Mark the insert depth: read the insert depth for your hose series from the crimp data sheet and mark the line on the hose cover.
3. Lubricate and insert: apply a thin film of assembly lubricant to the stem and the hose bore, then push the fitting into the hose until the mark meets the ferrule.
4. Crimp and verify: select the die per the crimp table, crimp in one continuous stroke, then measure the crimp outside diameter with a caliper and compare with the tolerance.

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 mix fittings and ferrules from different suppliers, even when the thread and hose sizes look identical. Stem geometry, ferrule hardness, and crimp parameters differ, and a mixed joint will leak or blow off under pressure.
• ❌ Never crimp without the matching crimp data sheet. An under-crimped joint weeps, and an over-crimped joint damages the hose reinforcement.
• ❌ Never recrimp a fitting after a failed attempt, and never reuse a fitting removed from a hose.
• ✔ After assembly, pressure-test the circuit at 1.5x working pressure and inspect all joints for weepage.

OEM Customization and Quality Traceability

Customization Options

• Size and thread customization: non-standard R thread and hose combinations 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 → heat treatment → 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, the heat-treatment record, 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 crimp-on fitting for hose whose port end is a male R-series taper thread (ISO 7-1) and whose hose end is a ribbed stem crimped onto the 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 the 13013-SP and the 13011-SP series? A: Both are BSPT male crimp fittings with the same taper thread geometry. The 13011-SP spans R1/8″ to R2″; the 13013-SP is the heavy-duty execution line concentrated on the large sizes R3/4″ to R2″ with its own stem geometry and part numbers.

Q: Which hoses work with the 13013-SP series? A: The part numbers in the table suit hose bores from -12 to -32 (DN 20 to DN 50). Confirm your exact hose construction with our engineers, and the matching crimp data sheet will be supplied with the order.

Q: Can you provide crimp data for my hose? A: Yes. Every order includes the crimp data sheet for your hose construction, with insert depth, crimp outside diameter, and die selection. Send us your hose series and brand, and our engineers will confirm the crimp parameters before shipment.

Request a Quote

Tell us the taper thread, the hose dash size, the hose construction, 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 pressure-tested, batch-coded, and backed by a written warranty. Request your quote, crimp data sheet, or drawing pack today, and we will respond within 24 hours.