RAM 1/4" NPT Female Threaded Hole Base w/1" Ball
The RAM-B-218-1U consists of a 1" ball and 0.25" NPT female thread. This part connects to any 0.25" NPT male thread, including RAM-PF-585-X flex arm series mounts and RAM-PA54XX rigid arm series mounts.
NPT Thread and Pipe Sizing:
NPT (National Pipe Thread) is a standard used in joining pipes and fittings that have a tapered thread. As a general rule, the NPT inch size is the inside diameter of the threaded pipe and is known as the NPS (Nominal Pipe Size). The outer diameter (OD) of the pipe is shown below:
|NPT Size (NPS)||Pipe Outer Dia. (OD)||Threads per inch|
We are pleased to announce our new shipping promotions below. These rates apply to your entire order*!
|Free shipping||FREE!||6 to 10 Business Days|
|Ground Shipping||$5.95||1-6 Business Days|
|3 Day Shipping||$9.95||3 Business Days|
|2 Day Shipping||$18.95||2 Business Days|
|1 Day Shipping||$28.95||1 Business Day|
*These offers apply to in-stock orders to the lower 48 states only. We cannot include shipments to Alaska, Hawaii, Puerto Rico or any other US Territory. Please call or email us for rates to these locations. Oversized packages are also excluded for 3, 2, and next day shipping. Items that are shipped freight are also excluded. Because we have many different warehouses around the United States we reserve the right to choose the carrier. Signature service can be requested for $3 extra.
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Please use the shipping calculator for an accurate shipping quote.
We ship via DHL International and USPS. Shipping insurance is optional but recommended and costs $5 for all international orders. Items that can fit in a flat rate envelope are shipped via flat rate service. Please keep in mind that USPS Flat Rate Priority Mail does not include detailed tracking and is not covered by insurance to certain countries. For a list of these countries please email us.
International order processing takes approx. 3-5 business days.
Many countries impose their own customs, duties, tariffs, taxes, etc... on items imported from the USA. We do not cover those costs.
The shipping transit times are approx. as follow:
|DHL International Economy:||5-7 business days (trackable)|
|USPS Express (EMS) Mail:||1-2 weeks (trackable)|
|USPS Global Priority Mail:||2-3 weeks, (trackable)|
|USPS Flat Rate Priority Mail:||4-5 weeks (not trackable)|