4307002152 – Square Head Plug, 1/4 in MNPT, 316 L Stainless Steel, Class 3000, 11/16 in Length
4307002152 – Square Head Plug, 1/4 in MNPT, 316 L Stainless Steel, Class 3000, 11/16 in Length
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Commercial Ordering FAQ
How do I verify that 4307002152 – Square Head Plug, 1/4 in MNPT, 316 L Stainless Steel, Class 3000, 11/16 in Length is the correct replacement part for my equipment?
Check the OEM part number (4307002152) 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 Generic 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 Generic 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.
The 4307002152 Square Head Plug is available from National Boiler Supply. We support purchasing teams with fast dispatch, formal quotes, and a live order desk at 850-565-3492.
Product Overview
It has corrosion resistance inherent to 316L stainless steel. 316L stainless steel construction with a 1/4-inch square drive style head provides a flat wrenching surface for installation and removal. It is rated for a maximum pressure of 3000 psi at 100°F and a maximum steam pressure of 2810 psi at 350°F, and it conforms to ASME and ASTM standards for thread dimensions and material quality.
Features
- Material: 316L Stainless Steel
- Shape and Type: Square Head Plug with 316L stainless steel construction
- Nominal Pipe Size: 1/4 inch
- Pressure Rating: Class 3000; Maximum Pressure 3000 psi @ 100°F
- Maximum Steam Pressure: 2810 psi @ 350°F
- Fitting Connection Type: Male National Pipe Thread (MNPT)
- Standards: ASME B1.20.1 (NPT threads), ASTM A182 (material), ASME B16.11 (dimensions)
- Overall Length: 11/16 inch; Outside Diameter: 35/64 inch
Technical Specifications
| Manufacturer Part Number | 4307002152 |
|---|
OEM Part Verification: Confirm part number 4307002152 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.
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.