Part Number: 7683
Category: Pressure Washer Accessories → Spray Nozzles → Hi-Impact Spray Nozzles
Type: PNR 1/4" BSPT SS303 Stainless Steel Hi-Impact Nozzle – Pressure Washer Replacement Nozzle

The PNR SS303 Hi-Impact Nozzle (Part #7683) is a genuine OEM high-pressure replacement nozzle designed for commercial, industrial, and heavy-duty pressure washing applications requiring an extremely durable, concentrated spray. Engineered for maximum impact and long service life, this hi-impact nozzle is ideal for removing stubborn dirt, grease, mud, scale, and heavy debris from durable surfaces and industrial equipment.

Key Features & Benefits

• Genuine PNR OEM hi-impact spray nozzle
• Part Number: 7683
• High-impact concentrated spray design
• 1/4" BSPT threaded connection
• Manufactured from AISI 416 stainless steel
• Precision-machined for consistent spray performance
• Excellent corrosion and wear resistance
• Heavy-duty construction for demanding environments
• Designed for commercial and industrial pressure washing
• Long service life with OEM-quality performance

Technical Specifications

Part Number: 7683

Manufacturer: PNR

Product Type: Hi-Impact Spray Nozzle

Thread Size: 1/4" BSPT

Nozzle Style: Hi-Impact

Material: AISI 416 Stainless Steel

OEM Replacement: Yes

Compatible Applications

Suitable for use with:

• Pressure washer spray guns with BSPT fittings
• Pressure washer spray wands
• Pressure washer lances
• Commercial pressure washers
• Industrial cleaning equipment
• Heavy equipment cleaning
• Construction equipment maintenance
• Agricultural equipment cleaning
• Concrete and steel surface cleaning
• Industrial maintenance applications

Always verify the thread type (1/4" BSPT) and equipment compatibility before ordering.

Function of the Hi-Impact Nozzle

The PNR 7683 hi-impact nozzle helps:

• Deliver a concentrated, high-impact water stream
• Remove stubborn dirt, grease, oil, mud, and heavy buildup
• Maintain consistent operating pressure and water flow
• Improve cleaning efficiency on demanding industrial applications
• Provide reliable OEM performance for commercial pressure washer systems

Its rugged design is intended for heavy-duty cleaning where concentrated cleaning power and durability are essential.

Common Signs Replacement Is Needed

Replace the nozzle if you notice:

• Reduced cleaning performance
• Distorted or inconsistent spray stream
• Worn nozzle opening
• Clogged nozzle
• Damaged threads
• Corrosion or physical damage
• Pressure loss caused by nozzle wear

Replacing a worn nozzle restores proper spray performance, operating pressure, and cleaning efficiency.

Installation & Service Notes

• Turn off the pressure washer and relieve system pressure before replacing the nozzle.
• Verify compatibility with the 1/4" BSPT threaded connection before installation.
• Install the nozzle securely without overtightening the threads.
• Inspect the nozzle seat and threads for dirt or debris before installation.
• Test the spray pattern after installation to verify proper operation.
• Replace the nozzle if wear results in reduced cleaning performance or inconsistent spray output.

Important: Ensure the nozzle matches your pressure washer's flow rate (GPM), operating pressure (PSI), and BSPT thread standard. This nozzle is designed specifically for equipment using 1/4" BSPT connections and may not be compatible with 1/4" NPT fittings without the appropriate adapter.

Maintenance Recommendations

• Flush the nozzle with clean water after each use.
• Inspect the nozzle regularly for debris, mineral deposits, or wear.
• Clean clogged nozzles using an approved nozzle cleaning tool—avoid using wire or sharp objects that may damage the precision opening.
• Store the nozzle in a clean, dry location when not in use.
• Use only genuine OEM replacement nozzles to maintain proper spray performance, operating pressure, and equipment reliability.