
Commercial Ordering FAQ
How do I verify that Dixon N4M4 – Male to Bowes Nipple, (M)NPT, 1/2, Steel is the correct replacement part for my equipment?
Check the OEM part number (N4M4) against your equipment nameplate or the manufacturer's repair parts list before ordering. If you are not sure, call the National Boiler Supply order desk at 850-565-3492 and we can cross-reference your equipment model and serial numbers before the order ships.
What are the shipping and freight options for Dixon orders?
Standard parcel orders ship quickly from commercial distribution centers. Shipping is a $35 flat rate on orders under $999, and qualifying orders of $999 or more ship free by ground. Heavy equipment that has to move by LTL freight is quoted after the order is placed and confirmed with you before dispatch.
Can contractors or facility managers request a formal quote or use a Purchase Order (PO)?
Yes. National Boiler Supply works with commercial contractors, mechanical engineers, municipalities, and facility teams. Call 850-565-3492 for a formal quote, bulk pricing, or PO and tax-exempt order processing.
What if this Dixon part is marked Call to Order or needed for an emergency repair?
Call our order desk at 850-565-3492. We can confirm factory lead times right away and arrange expedited air or hot-shot delivery when a repair cannot wait.
Order the Dixon N4M4 Male to Bowes Nipple from National Boiler Supply. Call our order desk at 850-565-3492 for a formal quote or a part number cross-check.
Product Overview
The DIXON - N4M4 is a quick connect hose coupling for tool-free connection and disconnection at the end of hoses or pipes. It is compatible with Bowes-style couplings when used with fittings matching the specified coupling and hose fitting sizes (1/2 in). This coupling is designed to provide sealing using the specified Nitrile O-ring (subject to correct installation and within the rated pressure/temperature ranges). It is rated for pneumatic and hydraulic applications requiring quick hose changes; intended use is based on the specified ratings (max working pressure, temperature range, and fitting sizes). It features a sleeve locking mechanism for secure attachment without tools.
Features
- Material: steel construction with zinc plating.
- Coupling size and hose fitting size: 1/2 in, compatible with hoses of 1/2 in inner diameter.
- Thread size: 1/2"-14 NPT male thread for connection to corresponding female fittings.
- Maximum working pressure: 500 psi at 70°F (within rated temperature range and with properly matched components).
- Maximum flow rate: 5,776.64 L/min under rated operating conditions with properly matched system components.
- Operating temperature range: -40°F to 250°F when used within rated pressure limits and with compatible seals/fluids.
- Seal material: Nitrile O-ring for fluid sealing.
- Overall length: 3.63 in; maximum outside diameter: 1.312 in.
Technical Specifications
| Brand | Dixon |
|---|---|
| Manufacturer Part Number | N4M4 |
OEM Part Verification: Confirm Dixon part number N4M4 against your equipment nameplate or parts list before ordering. Our order desk can cross-check it for you.
Order Desk Support: Call 850-565-3492 for formal quotes, lead times, and volume pricing.
Related Dixon Components & Replacement Parts
- Dixon N4M4-B – Male to Bowes Nipple, (M)NPT, 1/2, Brass – OEM Part # N4M4-B
- Dixon N4F6-B – Female to Bowes Nipple, (F)NPT, 1/2, Brass – OEM Part # N4F6-B
- Dixon N4M4-B-LS – Male to Bowes Nipple, (M)NPT, 1/2, Brass – OEM Part # N4M4-B-LS
- Dixon N4F6 – Female to Bowes Nipple, (F)NPT, 1/2, Steel – OEM Part # N4F6
- Dixon N4M4-LS – Male to Bowes Nipple, (M)NPT, 1/2, Steel – OEM Part # N4M4-LS
Need help confirming a part number or cross-reference? Call our order desk at 850-565-3492.
Corporate Procurement & PO Processing
Formal Purchase Orders (POs) and tax-exempt ordering are accepted for commercial contractors and institutional facilities.
Apply for Trade Account & Terms →📋 Procurement & Shipping Notice
- LTL Freight Dispatch: Heavy commercial units ship directly via insured LTL carrier with delivery coordination included.
- Project Timelines & Submittals: Need guaranteed delivery dates, formal submittals, or tax-exempt processing?
👉 Request a Commercial Quote or contact our procurement team for direct freight scheduling.