Frequently Asked Questions

Q. Where are we located?

A. We have two locations with our main warehouse located in Bellingham, WA and our second location in Everett, WA.

2314 E. Bakerview Rd. Ste. 101

Bellingham, WA 98226

Phone: (360) 734-6330

              800-791-2153

Fax:     (360) 733-5447

3500 Everett Avenue

Everett, WA 98201

Phone: (425) 252-3851

             800-967-8079

Fax:     (425) 252-8653

Q. What warehouse do we ship our products from?

A. We ship all of our products from our Bellingham warehouse

Q. What are your store hours?

A. Our store hours are:

Monday - Friday: 7:00 A.M. – 5:30 P.M.

Saturday: 8:00 A.M. – 12:00 P.M.

Sundays: Closed

Q. How long does it take to process orders?

A. Most orders placed will take 1-3 days to process, before we send you a shipping conformation saying the order has shipped.

Q. What are cut-off times for getting an order out same day, if I choose next day air or next day air saver?

A. If you plan on ordering parts and want them shipped same day, UPS orders must be placed before 12:00 P.M. PST if you want same day shipping (excluding some hose assemblies). If you have any questions whether certain products would be available for same day shipping, please call us at (360) 734-6330.

Q. How long will USPS shipping take (US)?

A. Depending on what you ordered, but in most cases 2-3 days shipping since we ship flat rate priority mail. If you order required first class mail service, in most cases 5-7 days.

Q. Do we ship internationally?

A. Yes we do ship worldwide to about every country. Just make sure you input the right information into the right fields when ordering. USPS international shipping will include a handling fee, which is determined by location.

Q. How long does USPS international take to be delivered?

A. International Priority mail usually takes 6-10 business days, upon receiving tracking number. First class mail depends on the destination of the package.

Q. What are tapered threads?

A. Tapered threads are the most common type of thread available. As the name implies, they have a slight taper. When mated together and tightened, the threads compress to form a seal. The mating threads both hold the fitting in place and seal the connection. The most widely used pipe threads in North America are NPT (National Pipe Taper). Some confusion may result from the use of NPT, FPT, and MPT in describing threads. Both FPT and MPT are NPT threads, with FPT meaning female threads (internal) and MPT meaning male threads (external). NPTF (Dryseal) threads are modified NPT threads, which are less likely to leak without a sealant. For a leak-free seal, we recommend using a sealant compound or PTFE tape. You can use NPTF threads with NPT threads, but you’ll lose some of the leak-free characteristics.

Q. What are straight threads?

A. Straight (parallel) threads are used for mechanical joining. They serve one purpose - to hold a fitting in place. As a result, an O-ring (elastomer), hard metal seal or a soft seat seal is required. When used together, the threads. Straight pipe threads include NPSM (National Pipe Straight Hose) conform to SAE (Society of Automotive Engineers) specifications. Sizing and pitches differs from NPT threads. Less common straight threads are GHT (garden Hose) and NST (fire hose coupling).

Q. What should I do if I can’t identify what thread I need?

A. First determine the number of threads per inch by measuring the distance from peak of thread to peak across the largest number of whole threads. Then divide the number of threads by measurement (This will provide the TPI). Next check to see if the thread is straight or tapered. For Straight threads measure the Outside Diameter of the Male (ODM) or the Inside Diameter of the Female (IDF), from peak of thread to peak of thread. For tapered threads measure the Outside Diameter of the Male (ODM) at the large end and the small end, or the Inside Diameter of the Female (IDF) at the large end and the small end, from peak of thread to peak of thread. Then measure the Outside Diameter (OD) of the unthreaded pipe. Once the application and the information have been determined, the thread can generally be determined.

Threading Information

Abbreviation

System Name

Compatibility

Seal Method

BSPP

British Standard Pipe Parallel

Male BSPP with Female BSPP

Female BSPP with Male BSPP

Female BSPP with Male BSPTr

Washer

Washer

Washer

BSPTr

British Standard Pipe Taper

Male BSPTr with Female BSPTr

Male BSPTr with Female BSPP

Female BSPTr with Male BSPTr

Female BSPTr not compatible with Male BSPP

Thread

Washer

Thread

CHT

American Standard Fire Hose Thread

(1” National Hose Thread is Chemical Hose Thread)

1’ Male NH (NST) with 1” Female NH (NST)

1” Female NH (NST) with 1” Male NH (NST)

1” Thread is used on both 3/4” hose and 1” hose.

Not compatible with other systems

Washer

Washer

GHT

Garden Hose Thread

Male GHT with Female GHT

Female GHT with Male GHT

Thread is same for all size hose

Not compatible with other systems

Washer

Washer

IPS

Iron Pipe Straight Thread

Generic Name for Straight Pipe Thread

See NPSH for compatibility

Washer

IPT

Iron Pipe Thread

Generic Name for All Pipe Thread

More information required

JIC

Joint Industrial Committee

Used with other mating JIC threads

Mechanical

NH

Or

NST

American Standard Fire Hose

Coupling Thread

(National Hose thread also known as National Standard Thread)

Male NH (NST) with Female NH (NST)

Female NH (NST) with Male NH (NST)

Not compatible with other systems

Thread pitch and diameters of fire threads may vary according to local and municipal regulations.

Washer

Washer

NPT

American Standard Taper Pipe

Thread

(National Pipe Tapered)

Male NPT with Female NPT

Male NPT with Female NPTF

Male NPT with Male NPSM

Male NPT with Female NPSH

Female NPT with Male NPT

Female NPT with Male NPTF

Female NPT not compatible with Male NPSM or Male NPSH

Thread

Thread

Washer

Washer

Thread

Thread

NPTF

American Standard taper Pipe

Duel Dryseal Thread (National Pipe Tapered) (Dryseal)

Male NPTF with Female NPTF

Male NPTF with Female NPT

Male NPTF with Female NPSM

Male NPTF with Female NPSH

Female NPTF with Male NPTF

Female NPTF with Male NPT

Female NPTF with Male NPSM or NPSH

Note: NPTF with NPTF threads do not require sealant for initial use. After that, sealant is required.

Thread

Thread

Washer

Washer

Thread

Thread

Not Compatible

NPSH

American Standard Straight Pipe

for Hose Couplings (National Pipe

Straight Hose)

Male NPSHM with Female NPSH

Female NPSH with Male NPSH

Female NPSH with Male NPT

Female NPSH with Male NPTF

Female NPSH with Male NPSM

Washer

Washer

Washer

Washer

Washer

NPSM

American Standard Straight Mechanical Joints (National Pipe

Straight Mechanical)

Male NPSM with Female NPSM Male NPSM with Female NPSH

Female NPSM with Male NPSM

Female NPSM with Male NPT

Female NPSM with Male NPTF

Seal Can be either mechanical or washer.

Mating fittings must be of same type.

SIPT

Straight Iron Pipe Thread

Generic Name for Straight Pipe Thread

Washer

TIPT

Tapered Iron Pipe Thread

Generic Name for Tapered Pipe Thread

Thread

NYC

NYC Fire Department

Straight Thread used In New York City

Washer

Chicago

Chicago Fire Department

Straight Thread used in Chicago

Washer

Thread Dimensions

Size

Pipe

OD

Tapered

Threads

Straight Threads

NPT

BSPTr

NPSH

NPSM

NST (NH)

BSPP

TPI

TPI

TPI

ODM

(max)

IDF

(min)

TPI

ODM

(max)

IDF

(min)

TPI

ODM

IDF

(min)

TPI

ODM

(max)

IDF

(min)

1/8”

.405

27

28

27

0.397

0.358

0.383

0.337

1/4”

.540

18

19

18

0.526

0.468

0.516

0.450

3/8”

.675

18

19

18

0.662

0.603

0.656

0.588

1/2”

.840

14

14

14

0.8248

0.7395

14

0.823

0.74

0.825

0.733

3/4”

1.050

14

14

14

1.0353

0.9500

14

1.034

0.958

1.041

0.950

1”

1.315

11.5

11

11.5

1.2951

1.1921

11.5

1.293

1.201

8

1.375

1.2246

11

1.309

1.193

1 ¼”

1.660

11.5

11

11.5

1.6399

1.5369

11.5

1.638

1.546

11

1.650

1.534

1 ½”

1.900

11.5

11

11.5

1.8788

1.7758

11.5

1.877

1.785

9

1.990

1.8577

1.882