The HPS NPT Hex Plug Fitting [3/8 NPT] (Aluminum, Black) is one of our steady sellers in Hoses & Fittings, and it ships from the USA.
![HPS NPT Hex Plug Fitting [3/8 NPT] (Aluminum, Black)](https://partsmithco.com/wp-content/uploads/2026/07/AN933_1_1c08241a-c2ec-4139-bfbd-8142d10147e2-3.jpg)
Clamp choice matters: constant tension or lined clamps protect the hose surface over heat cycles. Measure inner diameter at the fitting rather than estimating by eye.
Ordering the hps npt hex plug fitting takes a minute and the confirmation reaches you straight away.
Our team knows the hps npt hex plug fitting well, so ask if anything about the specification is unclear.
Stock of the hps npt hex plug fitting is live on this page rather than estimated.
Part details
- Material: Aluminum
- Finish: Black
- Category: AN Fitting Components
- Price: $15.51 with free shipping over $99
- Availability: in stock, dispatched from the USA
Shops ordering in volume can send a full parts list and we will verify the whole job in one reply.
Keep shopping: Hoses & Fittings · HPS AN Male to Male Union Adapter AN Fitting [Straight] [-2] (Aluminum, Black) · HPS AN Male to Male Union Adapter AN Fitting [Straight] [-16] (Aluminum, Black) · full catalog
Every parcel carries tracking that updates with each carrier scan until it reaches your door.
For safety and service guidance from outside the aftermarket, see the fuel economy maintenance guidance.
Buyer questions
What do you need to verify fitment?
Our parts team confirms fitment before the box is sealed. Contact us with your vehicle details and we will settle it in advance.
When will my order dispatch?
Orders placed before early afternoon on a business day usually leave our USA warehouse the same day, and tracking is emailed when the label is created.
What happens if it arrives damaged?
Returns are handled in one reply for most cases. Keep your order confirmation, since it is the only proof of purchase we need.
How do you protect it in transit?
Lines and fittings are checked for pressure rating, inner diameter and ply count before shipping.
![HPS AN Male to Metric Adapter Fitting [Straight] [-6 to M18 x 1.5] (Aluminum, Black)](https://partsmithco.com/wp-content/uploads/2026/07/AN816-06-X_pic1_1_f414e18f-37ad-4910-8abb-c7f9ac2080bf-300x300.jpg)
![HPS AN Male to Metric Adapter Fitting [Straight] [-6 to M22 x 1.5] (Aluminum, Black)](https://partsmithco.com/wp-content/uploads/2026/07/AN816-06-X_pic1_1_84a0bab4-582d-4dc1-a176-6237879f811f-300x300.jpg)
![HPS Push-on Hose End to AN Female Fitting [120 Degree] [-10] (Aluminum, Black)](https://partsmithco.com/wp-content/uploads/2026/07/150-120_1_2ac48160-6f50-4c53-8c37-0cf776a30fac-300x300.jpg)
![HPS AN Male to Metric Adapter Fitting [Straight] [-6 to M14 x 1.5] (Aluminum, Black)](https://partsmithco.com/wp-content/uploads/2026/07/AN816-06-X_pic1_1_ef8cf05a-8f9b-4a44-938e-d86cae0e4307-300x300.jpg)
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