Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

HAMMOND Hole Plug: Steel, 4 in Conduit Hole Size, For 4.62 in Hole Dia - Max, Steel - Electrical Enclosure Hole Seals
HAMMONDElectrical Enclosure Hole Seals

HAMMOND Hole Plug: Steel, 4 in Conduit Hole Size, For 4.62 in Hole Dia - Max, Steel

The HAMMOND Hole Plug: Steel is an electrical enclosure hole seal designed for conduit holes. This gray, powder-coated steel plug accommodates a 4-inch conduit hole size with a maximum hole diameter of 4.62 inches…

SKU 3G-OTH-07398

Also listed as: HP 400 · HP-400

Brand
HAMMOND
Item
Hole Plug: Steel, 4 in Conduit Hole Size, For 4.62 in Hole Dia - Max, Steel
Category
Electrical Enclosure Hole Seals
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

HAMMOND
Manufacturer Part Number
HP400
Type
For 4.62 in Hole Dia - Max, Steel, 1/12/13/3/3R/4
Material
Steel
Color
Gray
Finish
Powder Coated
Includes
Stud and Plated Wing Nut
For Hole Type
Conduit
Conduit Hole Size
4 in
NEMA Enclosure Rating
12

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

HAMMOND Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The HAMMOND Hole Plug: Steel is an electrical enclosure hole seal designed for conduit holes. This gray, powder-coated steel plug accommodates a 4-inch conduit hole size with a maximum hole diameter of 4.62 inches and includes a stud and plated wing nut. It carries a NEMA Enclosure Rating of 12.

Frequently Asked Questions

What is the HAMMOND HP400 hole plug used for?

The HAMMOND HP400 hole plug seals unused conduit openings in electrical enclosures rated NEMA 12. It prevents dust, dirt, and moisture ingress while maintaining the enclosure's environmental integrity. This steel plug is powder coated gray and includes a stud and plated wing nut for secure installation.

What are the specifications of the HAMMOND HP400 hole plug?

The HAMMOND HP400 is a steel hole plug for 4-inch conduit holes, with a maximum hole diameter of 4.62 inches. It has a gray powder-coated finish, includes a stud and plated wing nut, and carries a NEMA Enclosure Rating of 12. The manufacturer part number is HP400.

Where to buy the HAMMOND HP400 hole plug worldwide?

3G Electric supplies the HAMMOND HP400 hole plug to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us to order this NEMA 12-rated steel plug for your electrical enclosure sealing needs.

How to install the HAMMOND HP400 hole plug?

To install the HAMMOND HP400, insert the plug into the conduit hole from outside the enclosure. Secure it by tightening the included plated wing nut against the interior surface. Ensure the gasket (if present) seats evenly to maintain the NEMA 12 seal. Torque the wing nut to manufacturer recommendations.

Used in

Common applications for HAMMOND
Food processing — Steel washdown enclosures (e.g., HW30308GYHK) for washdown environments requiring NEMA 4/4X protection.
Chemical plants — 304 stainless steel enclosures (e.g., EN4SD202010SS) for corrosion resistance in chemical storage areas.
Water treatment — Aluminum enclosures (e.g., 1418N4ALE6) for outdoor control panels in humid or corrosive atmospheres.
Oil and gas — Sloped top stainless steel enclosures (e.g., HWST30308SS) for outdoor instrumentation in rain and dust conditions.
General industrial automation — Steel dust-tight enclosures (e.g., 1418MR8) for housing PLCs and relays in factory floors.
Outdoor telecom — Nonmetallic polyester enclosures (e.g., 1590ZGRP243) for junction boxes in corrosive coastal environments.

HAMMOND Products

3G Electric supplies HAMMOND electrical enclosure hole seals. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
HAMMOND Hole Plug: Steel, 3 1/2 in Conduit Hole Size, For 4.12 in Hole Dia - Max, Steel, Gray (MPN HP350)
HAMMOND
HAMMOND Hole Plug: Steel, 3 1/2 in Conduit Hole Size, For 4.12 in Hole Dia - Max, Steel, Gray (MPN HP350)
HAMMOND Hole Plug: Steel, 1 1/2 in Conduit Hole Size, For 2 in Hole Dia - Max, Steel, 1/12/13/3/3R/4 (MPN HP150)
HAMMOND
HAMMOND Hole Plug: Steel, 1 1/2 in Conduit Hole Size, For 2 in Hole Dia - Max, Steel, 1/12/13/3/3R/4 (MPN HP150)
HAMMOND Hole Plug: Steel, 3 in Conduit Hole Size, For 3.62 in Hole Dia - Max, Steel, 1/12/13/3/3R/4 (MPN HP300)
HAMMOND
HAMMOND Hole Plug: Steel, 3 in Conduit Hole Size, For 3.62 in Hole Dia - Max, Steel, 1/12/13/3/3R/4 (MPN HP300)
HAMMOND Hole Plug: Stainless Steel, 3/4 in Conduit Hole Size, For 1.06 in Hole Dia - Max, Brushed (MPN HP75SS)
HAMMOND
HAMMOND Hole Plug: Stainless Steel, 3/4 in Conduit Hole Size, For 1.06 in Hole Dia - Max, Brushed (MPN HP75SS)
HAMMOND Hole Plug: Stainless Steel, 1 1/4 in Conduit Hole Size, For 1.69 in Hole Dia - Max, Brushed (MPN HP125SS)
HAMMOND
HAMMOND Hole Plug: Stainless Steel, 1 1/4 in Conduit Hole Size, For 1.69 in Hole Dia - Max, Brushed (MPN HP125SS)

More from HAMMOND

View all HAMMOND parts
HAMMOND Hole Plug: Steel, 3/4 in Conduit Hole Size, For 1.25 in Hole Dia - Max, Steel, Powder Coated (MPN HPB)
HAMMOND
HAMMOND Hole Plug: Steel, 3/4 in Conduit Hole Size, For 1.25 in Hole Dia - Max, Steel, Powder Coated (MPN HPB)
HAMMOND Hole Plug: Steel, 1 1/4 in Conduit Hole Size, For 1.69 in Hole Dia - Max, Steel, Gray (MPN HP125)
HAMMOND
HAMMOND Hole Plug: Steel, 1 1/4 in Conduit Hole Size, For 1.69 in Hole Dia - Max, Steel, Gray (MPN HP125)
HAMMOND Hole Plug: Steel, 2 in Conduit Hole Size, For 2.5 in Hole Dia - Max, Steel, 1/12/13/3/3R/4 (MPN HP200)
HAMMOND
HAMMOND Hole Plug: Steel, 2 in Conduit Hole Size, For 2.5 in Hole Dia - Max, Steel, 1/12/13/3/3R/4 (MPN HP200)
HAMMOND Hole Plug: Stainless Steel, 1/2 in Conduit Hole Size, For 0.88 in Hole Dia - Max, Brushed (MPN HP22SS)
HAMMOND
HAMMOND Hole Plug: Stainless Steel, 1/2 in Conduit Hole Size, For 0.88 in Hole Dia - Max, Brushed (MPN HP22SS)
HAMMOND Hole Plug: Steel, 2 1/2 in Conduit Hole Size, For 3 in Hole Dia - Max, Steel, 1/12/13/3/3R/4 (MPN HP250)
HAMMOND
HAMMOND Hole Plug: Steel, 2 1/2 in Conduit Hole Size, For 3 in Hole Dia - Max, Steel, 1/12/13/3/3R/4 (MPN HP250)
HAMMOND Hole Plug: Steel, 3/4 in Conduit Hole Size, For 1.06 in Hole Dia - Max, Steel, Powder Coated (MPN HP75)
HAMMOND
HAMMOND Hole Plug: Steel, 3/4 in Conduit Hole Size, For 1.06 in Hole Dia - Max, Steel, Powder Coated (MPN HP75)
HAMMOND Hole Plug: Steel, 1/2 in Conduit Hole Size, For 0.88 in Hole Dia - Max, Steel, Powder Coated (MPN HP50)
HAMMOND
HAMMOND Hole Plug: Steel, 1/2 in Conduit Hole Size, For 0.88 in Hole Dia - Max, Steel, Powder Coated (MPN HP50)
HAMMOND Hole Plug: Steel, 1 in Conduit Hole Size, For 1.38 in Hole Dia - Max, Steel, 1/12/13/3/3R/4 (MPN HP100)
HAMMOND
HAMMOND Hole Plug: Steel, 1 in Conduit Hole Size, For 1.38 in Hole Dia - Max, Steel, 1/12/13/3/3R/4 (MPN HP100)