Stainless Steel NPT Hollow Hex Head Plug
Stainless Steel NPT Hollow Hex Head Plug in 316L stainless steel, forged. 10 part numbers, 1/8" to 3"; the size table gives the size, dimensions in millimetres and the Parker equivalent for every Indus part number.
Key features
- Body Configuration: plug
- Port A Thread: NPT, 1/8" to 3" (1/8-27 to 3-8)
- Port A Sealing: taper pipe thread that seals on the thread flanks, with sealant or tape
- Nominal Size Range: 1/8" to 3"
- Max Working Pressure: Up to 11,000 psi, falling with size (ASME B31.3 (NPT), manufacturer); see the table
- Body Configuration
- plug
- Port A Thread
- NPT, 1/8" to 3" (1/8-27 to 3-8)
- Port A Sealing
- taper pipe thread that seals on the thread flanks, with sealant or tape
Product description
The Stainless Steel NPT Hollow Hex Head Plug is a plug in 316L stainless steel, forged from one piece. It carries an NPT male end. Stainless steel is chosen where corrosion rules out zinc-plated carbon steel: offshore and marine lines, chemical, fertiliser and petroleum plant, and food, beverage and pharmaceutical process equipment.
Construction
- Body: plug
- End 1: NPT male
- Material: 316L stainless steel, forged
Ends and sealing
- NPT: taper pipe thread that seals on the thread flanks, with sealant or tape; ASME B1.20.1.
Sizes
10 part numbers, 1/8" to 3". The Sizes & Part Numbers tab lists the size, dimensions in millimetres and the Parker equivalent for every one.
- End 1: 1/8" NPT (1/8-27) to 3" NPT (3-8)
Pressure rating
Manufacturer's published ratings (ASME B31.3 (NPT)), from 3,900 to 11,000 psi depending on size and end:
| Size designator | NPT size | Male (psig) | Male (bar) | Female (psig) | Female (bar) |
|---|---|---|---|---|---|
| 1 | 1/16 | 11000 | 757 | 6700 | 461 |
| 2 | 1/8 | 10000 | 689 | 6500 | 447 |
| 4 | 1/4 | 8000 | 551 | 6600 | 454 |
| 6 | 3/8 | 7800 | 537 | 5300 | 365 |
| 8 | 1/2 | 7700 | 530 | 4900 | 337 |
| 12 | 3/4 | 7300 | 502 | 4600 | 316 |
| 16 | 1 | 5300 | 365 | 4400 | 303 |
| 20 | 1 1/4 | 6000 | 413 | 5000 | 344 |
| 24 | 1 1/2 | 5000 | 344 | 4600 | 316 |
| 32 | 2 | 3900 | 268 | 3900 | 268 |
Parker equivalents
For 9 of the 10 sizes the size table gives the Parker part number the manufacturer cross-references, so a part number taken off existing equipment can be matched to the Indus part number.
Carbon-steel version
The same configuration in zinc-plated carbon steel: Plug NPT.
How to order
Quote the Indus part number from the size table. If you only have the fitting, send the thread or tube size on each end and the material, and Indus engineering will confirm the part number. Price and lead time are confirmed with the quotation.
Identification
| Parameter | Value |
|---|---|
| Body Configuration | plug |
Port A
| Parameter | Value |
|---|---|
| Port A Thread | NPT, 1/8" to 3" (1/8-27 to 3-8) |
| Port A Sealing | taper pipe thread that seals on the thread flanks, with sealant or tape |
| Port A Gender | male |
Dimensions
| Parameter | Value |
|---|---|
| Nominal Size Range | 1/8" to 3" |
Performance
| Parameter | Value |
|---|---|
| Max Working Pressure | Up to 11,000 psi, falling with size (ASME B31.3 (NPT), manufacturer); see the table |
Construction
| Parameter | Value |
|---|---|
| Material | 316L stainless steel, forged |
Compliance
| Parameter | Value |
|---|---|
| Applicable Standards | ASME B1.20.1 |
Shipping & lead time
Sizes & part numbers
10 sizesEquivalent to Parker 1/2 HP-SS / 1/4 HP-SS, Aeroquip 259-2082 and SSP 1/#HP / #HP (SAE 140109E). Every size below prints its equivalent part number beside ours — quote either.
| Indus part no. | Parker equivalent | Aeroquip equivalent | SSP equivalent | SAE no. | End connection | Y (mm) | L (mm) |
|---|---|---|---|---|---|---|---|
| IH-SS-5406-P-HOLLOW-02 | 1/8 HP-SS | 259-2082-2 | 1/8HP | 140109E | 1/8" NPT (1/8-27) | 11.1 | 14.4 |
| IH-SS-5406-P-HOLLOW-04 | 1/4 HP-SS | 259-2082-4 | 1/4HP | 140109E | 1/4" NPT (1/4-18) | 14.3 | 19.1 |
| IH-SS-5406-P-HOLLOW-06 | 3/8 HP-SS | 259-2082-6 | 3/8HP | 140109E | 3/8" NPT (3/8-18) | 17.5 | 19.9 |
| IH-SS-5406-P-HOLLOW-08 | 1/2 HP-SS | 259-2082-8 | 1/2HP | 140109E | 1/2" NPT (1/2-14) | 22.2 | 24.7 |
| IH-SS-5406-P-Hollow-12 | 3/4 HP-SS | 259-2082-12 | 3/4HP | 140109E | 3/4" NPT (3/4-14) | 27 | 27 |
| IH-SS-5406-P-HOLLOW-16 | 1 HP-SS | 259-2082-16 | 1HP | 140109E | 1" NPT (1-11.5) | 33.4 | 31.9 |
| IH-SS-5406-P-HOLLOW-20 | 1 1/4 HP-SS | 259-2082-20 | 1-1/4HP | 140109E | 1-1/4" NPT (1-1/4-11.5) | 44.4 | 37.3 |
| IH-SS-5406-P-HOLLOW-24 | 1 1/2 HP-SS | 259-2082-24 | 1-1/2HP | 140109E | 1-1/2" NPT (1-1/2-11.5) | 50.8 | 39.9 |
| IH-SS-5406-P-Hollow-32 | 2 HP-SS | — | 2HP | 140109E | 2" NPT (2-11.5) | 63.5 | 44.4 |
| IH-SS-5406-P-Hollow-48 | — | — | — | 140109E | 3" NPT (3-8) | — | — |
Y — Hex across flats — printed "Y HEX" on the manufacturer drawing. L — Dimension L on the manufacturer dimension drawing. Ask us for the dimension drawing if you need it stamped.
Every size is available in 316 stainless steel on request — add “-SS” to the part number when you enquire.
Indus Hydraulics is not affiliated with Aeroquip, Parker or SSP. Aeroquip, Parker or SSP part numbers are shown for cross-reference only, so you can order from an existing bill of materials.
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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
- NPT Verschlussstopfen
- fr
- NPT bouchon mâle
- es
- NPT tapón macho
- it
- NPT tappo
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