
Tompkins 5406-CAP female NPTF cap, carbon steel: 6 sizes, 1/8-27 NPTF to 1-11½ NPTF.
Key features
- Fitting Configuration: Cap
- Nominal Size Range: 1/8-27 NPTF to 1-11½ NPTF
- Fitting Configuration
- Cap
Product description
The Tompkins 5406-CAP is a carbon steel female NPTF cap from Tompkins Industries' hydraulic adapter range, in 6 sizes from 1/8-27 NPTF to 1-11½ NPTF.
Specification
- Configuration: Female NPTF Cap (cap)
- Material: Carbon steel
- End A: Female NPTF
- Sizes: 6
Sizes and part numbers
The Sizes & Part Numbers tab lists each Tompkins number with its thread. Tompkins numbers give the style code, then the dash size of each end in the order the ends are named.
Choosing and fitting
Match each end to the port or tube it meets: JIC 37° and SAE O-ring boss share UNF threads at the same dash size but seal differently (37° flare vs an O-ring on the boss), and ORFS seals on an O-ring in the face. Check the thread before installing; never mix sealing types on one joint.
How to order
Quote the Tompkins part number, or the end types and dash sizes. Price and lead time are confirmed with the quotation.
Identification
| Parameter | Value |
|---|---|
| Fitting Configuration | Cap |
| Style | Female NPTF Cap |
Dimensions
| Parameter | Value |
|---|---|
| Nominal Size Range | 1/8-27 NPTF to 1-11½ NPTF |
Construction
| Parameter | Value |
|---|---|
| Material | Carbon steel |
Shipping & lead time
Sizes & part numbers
6 sizes| Tompkins part no. | Thread |
|---|---|
| 5406-CAP-02 | 1/8-27 NPTF |
| 5406-CAP-04 | 1/4-18 NPTF |
| 5406-CAP-06 | 3/8-18 NPTF |
| 5406-CAP-08 | 1/2-14 NPTF |
| 5406-CAP-12 | 3/4-14 NPTF |
| 5406-CAP-16 | 1-11½ NPTF |
What sizes is the Tompkins 5406-CAP made in?▾
Is it carbon steel or stainless?▾
What is the lead time?▾
Shipped worldwide from our Dubai warehouse. Transit, routes and documentation for 126 destinations
The same part, in the designations used across European and Gulf trade catalogues.
- de
- Verschlusskappe
- fr
- bouchon femelle
- es
- tapón hembra
- it
- cappuccio
From the blog
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Failure analysis
Using sealant on hydraulic threads: which joints want it, and which are ruined by it
Tape on a tapered thread is correct. Tape on a cone, a flat face or an O-ring boss is how a good joint is made to leak — and how debris gets into the system.
3 min read
Specification & standards
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A tapered thread seals on the thread itself, which is why it needs help. Every other connector on the machine seals somewhere else, which is why putting tape on it makes the leak worse.
6 min read
Thread & fitting identification
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Five American hose-end families that get confused because they share inch sizes. Which seals on the thread, which on a cone, which on an O-ring — and how to tell NPT from NPSM before it leaks.
4 min read
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