Forged Fitting Removable Cap
High Pressure Forged Fittings
NPT Female CapASME B16.11Class 3000 / 2000A105

Forged Threaded Pipe Cap (NPT, A105, ASME B16.11)

Threaded pipe cap · forged A105 · ASME B16.11 · UAE stock

A forged cap with a female NPT thread that screws onto the threaded end of a pipe or nipple. It closes the line in a way that can be removed later for cleaning, draining or extension, with no welding needed.

Material
ASTM A105
Standard
ASME B16.11
Thread
NPT female
Sizes
1/8" – 4"
Same-day quote Bulk & wholesale UAE & GCC delivery

Quality Assured

Checked stock, standard-compliant

Wide Size Range

Full sizes, ratings & materials

Ex-Stock, Dubai

Ready inventory, UAE & GCC delivery

Bulk & Wholesale

Project quantities at best price

Overview

Forged threaded caps for removable pipe end closures

A forged threaded cap fits over a male pipe thread and closes the end. Where a plug closes a female port, a cap closes a male one, so the choice depends on what is at the end of the line. Caps to ASME B16.11 are forged from A105 and carry class 2000 and 3000 ratings, giving a much stronger closure than malleable iron caps. The flat or slightly domed crown can be drilled for a gauge if required.

Hamza Fasteners supplies A105 threaded caps in class 3000 and 2000 from 1/8 to 4 inch, NPT as standard and BSPT on request. They are used on drain and blow-down nipples, the ends of temporary lines, hydraulic test stubs and spare branches on air and water headers. Contact our Dubai office for caps with the rest of your screwed fittings.

Technical Data

Threaded Cap datasheet and specifications

Reference data for Threaded Cap. Confirm exact size, rating and material for your order with our team.

This datasheet shows representative sizes for reference only. Threaded Cap is supplied in the full range of sizes, ratings and materials — not a single option. Tell us what you need and we will confirm exact availability, specification and price.

Thread Data · ASME B1.20.1

Threaded cap thread data

HAMZA FASTENERS
Reference
Size (NPS)Pipe OD (mm)NPT Threads per InchBSPT Option
1/4"13.718Yes, on request
3/8"17.118Yes, on request
1/2"21.314Yes, on request
3/4"26.714Yes, on request
1"33.411.5Yes, on request
1-1/4"42.211.5Yes, on request
1-1/2"48.311.5Yes, on request
2"60.311.5Yes, on request
3"88.98Yes, on request
4"114.38Yes, on request
NPT taper threads to ASME B1.20.1. BSPT (ISO 7-1) threads available on request. Pipe OD per ASME B36.10M.
Datasheet · HP-THCP

Product Specification

HAMZA FASTENERS
Rev. 01
Product TypeForged pipe cap, threaded
MaterialASTM A105 / A105N
StandardASME B16.11
Pressure / ClassClass 3000 · 2000
End ConnectionFemale NPT
Size Range1/8" – 4" NPS
Use a cap on male threads and a plug in female ports.
Size
1/8" – 4"
Material
ASTM A105
Rating
Class 3000 / 2000
Full range supplied — sizes, ratings & materials
Size Range
1/8" – 4"
Materials
A105 carbon steel · A350 LF2 · A182 F304L / F316L on request
Standards
ASME B16.11 · ASME B1.20.1
Pressure
Class 3000 · 2000 · 1000 PSI range
Ends / Types
NPT · BSPT female caps
Also Available
Socket weld caps, plugs
Request Full Datasheet & Price Need a specific size, rating or material? Send us your requirement.
Applications

Where Threaded Cap is used

Drain Nipples

Blow-down closures

Temporary Lines

Removable ends

Hydraulic Testing

Test stub caps

Air Headers

Spare branch ends

Water Systems

Flush point closures

Oil & Gas

Utility line ends

Availability & Supply

Threaded Cap supplier across the UAE, GCC and Africa

Stocked in Deira, Dubai and delivered fast across the region. Wherever you are building, we supply in stock and project quantities.

Hamza Fasteners is a trusted Threaded Cap supplier in Dubai and across the United Arab Emirates — Abu Dhabi, Sharjah and Ajman — with regular export supply to Saudi Arabia (Riyadh, Jeddah, Dammam), Qatar (Doha), Kuwait City, Oman (Muscat) and key East and West African markets including Tanzania (Dar es Salaam), Kenya (Nairobi and Mombasa), Nigeria (Lagos) and Ethiopia (Addis Ababa). Looking for a "Threaded Cap supplier near me" or the best price in your city? Send us your requirement for a same-day quote.

United Arab Emirates

  • Dubai
  • Abu Dhabi
  • Sharjah
  • Ajman

Saudi Arabia

  • Riyadh
  • Jeddah
  • Dammam

GCC

  • Doha, Qatar
  • Kuwait City
  • Muscat, Oman

Africa

  • Tanzania
  • Kenya · Nigeria
  • Ethiopia
FAQ

Common questions

When should I use a threaded cap rather than a plug?
Use a cap when the line ends in a male thread, such as a pipe or nipple. Use a plug when the end is a female port in a tee, coupling or valve. Both give a removable closure rated for threaded service.
Can a threaded cap be drilled for a gauge?
Yes. The crown of a forged cap can be drilled and tapped to take a gauge or bleed valve, provided enough material remains for the pressure. We can arrange tapped caps to order. Tell us the tapping size, usually 1/4 or 1/2 inch NPT, when ordering.
Do you carry threaded caps in many sizes?
Yes. Forged threaded caps are supplied from 1/8 to 4 inch in class 3000 and 2000, with a 1000 PSI range for light work and BSPT threads to order. Socket weld caps are available too. Tell us the quantities and we will confirm availability by return.
How much do threaded caps cost in Dubai?
It varies with size, pressure class or wall, material and how many you need. The quickest way is to WhatsApp your schedule of quantities; we confirm stock and price for threaded caps from Dubai the same day.
Do you deliver threaded caps across the UAE, GCC and Africa?
Yes. Stock items leave our Deira store the same or next day across Dubai and the wider UAE. We also ship to Saudi Arabia, Oman, Qatar, Kuwait, Bahrain and African markets by road, sea or air freight.
How do I seal a threaded cap?
Apply PTFE tape or thread compound to the male pipe thread, screw the cap on hand-tight, then tighten with a wrench a further one to two turns. Avoid sealant on the first thread so it does not enter the pipe.

Need Threaded Cap for your project?

Share the size, material, rating and quantity. We will confirm stock and send a quick quote with the datasheet and best price.

Email Us WhatsApp Enquiry Call Us sales@hamzafasteners.com · Deira, Dubai
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