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DFARS Specialty Metals
About Pipe and Fittings
Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.
Low-Pressure Stainless Steel Threaded Pipe Fittings
Hex-Drive Plugs
![]() |
Male |
316 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
Pipe Size | Construction | Pressure Class | Max. Pressure @ Temp. | Max. Steam Pressure @ Temp. | Each | |||
Magnetic NPTF Male | ||||||||
| 1/8 | Hollow | 150 | 270 psi @ 72° F | 180 psi @ 360° F | 1457N11 | 00000 | ||
| 1/4 | Hollow | 150 | 270 psi @ 72° F | 180 psi @ 360° F | 1457N12 | 0000 | ||
| 3/8 | Hollow | 150 | 270 psi @ 72° F | 180 psi @ 360° F | 1457N13 | 0000 | ||
| 1/2 | Hollow | 150 | 270 psi @ 72° F | 180 psi @ 360° F | 1457N14 | 0000 | ||
| 3/4 | Hollow | 150 | 270 psi @ 72° F | 180 psi @ 360° F | 1457N15 | 00000 | ||
| 1 | Hollow | 150 | 270 psi @ 72° F | 180 psi @ 360° F | 1457N16 | 00000 | ||
| 1 1/4 | Hollow | 150 | 270 psi @ 72° F | 180 psi @ 360° F | 1457N17 | 00000 | ||
| 1 1/2 | Hollow | 150 | 270 psi @ 72° F | 180 psi @ 360° F | 1457N18 | 00000 | ||
| 2 | Hollow | 150 | 270 psi @ 72° F | 180 psi @ 360° F | 1457N19 | 00000 | ||
| 2 1/2 | Hollow | 150 | 270 psi @ 72° F | 180 psi @ 360° F | 1457N21 | 000000 | ||
External-Hex-Drive Plugs
304 Stainless Steel | 316 Stainless Steel | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Construction | Pressure Class | Body Shape | Max. Pressure @ Temp. | Max. Steam Pressure @ Temp. | Each | Max. Pressure @ Temp. | Max. Steam Pressure @ Temp. | Each | ||||
NPT Male | |||||||||||||
![]() Male | |||||||||||||
| 1/2 | Hollow | 150 | Hex | 300 psi @ 72° F | 150 psi @ 350° F | 4464K254 | 00000 | 300 psi @ 72° F | 150 psi @ 350° F | 4452K144 | 00000 | ||
| 3/4 | Hollow | 150 | Hex | 300 psi @ 72° F | 150 psi @ 350° F | 4464K255 | 0000 | 300 psi @ 72° F | 150 psi @ 350° F | 4452K145 | 0000 | ||
| 1 | Hollow | 150 | Hex | 300 psi @ 72° F | 150 psi @ 350° F | 4464K256 | 0000 | 300 psi @ 72° F | 150 psi @ 350° F | 4452K146 | 00000 | ||
| 1 1/4 | Hollow | 150 | Hex | 300 psi @ 72° F | 150 psi @ 350° F | 4464K257 | 00000 | 300 psi @ 72° F | 150 psi @ 350° F | 4452K147 | 00000 | ||
| 1 1/2 | Hollow | 150 | Hex | 300 psi @ 72° F | 150 psi @ 350° F | 4464K258 | 00000 | 300 psi @ 72° F | 150 psi @ 350° F | 4452K148 | 00000 | ||
| 2 | Hollow | 150 | Hex | 300 psi @ 72° F | 150 psi @ 350° F | 4464K259 | 00000 | 300 psi @ 72° F | 150 psi @ 350° F | 4452K149 | 00000 | ||
| 2 1/2 | Hollow | 150 | Hex | 300 psi @ 72° F | 150 psi @ 350° F | 4464K244 | 00000 | 300 psi @ 72° F | 150 psi @ 350° F | 4452K151 | 00000 | ||
| 3 | Hollow | 150 | Hex | 300 psi @ 72° F | 150 psi @ 350° F | 4464K245 | 00000 | 300 psi @ 72° F | 150 psi @ 350° F | 4452K152 | 00000 | ||
| 4 | Hollow | 150 | Hex | 300 psi @ 72° F | 150 psi @ 350° F | 4464K246 | 00000 | 300 psi @ 72° F | 150 psi @ 350° F | 4452K153 | 000000 | ||
BSPT Male | |||||||||||||
![]() Male | |||||||||||||
| 1/8 | Hollow | 150 | Hex | — | — | ——— | 0 | 150 psi @ 72° F | 150 psi @ 360° F | 5273N245 | 0000 | ||
| 1/4 | Hollow | 150 | Hex | — | — | ——— | 0 | 150 psi @ 72° F | 150 psi @ 360° F | 5273N246 | 0000 | ||
| 3/8 | Hollow | 150 | Hex | — | — | ——— | 0 | 150 psi @ 72° F | 150 psi @ 360° F | 5273N247 | 0000 | ||
| 1/2 | Hollow | 150 | Hex | 300 psi @ 72° F | 150 psi @ 350° F | 4810T194 | 0000 | 150 psi @ 72° F | 150 psi @ 360° F | 5273N248 | 00000 | ||
| 3/4 | Hollow | 150 | Hex | 300 psi @ 72° F | 150 psi @ 350° F | 4810T195 | 00000 | 150 psi @ 72° F | 150 psi @ 360° F | 5273N249 | 00000 | ||
| 1 | Hollow | 150 | Hex | 300 psi @ 72° F | 150 psi @ 350° F | 4810T196 | 00000 | 150 psi @ 72° F | 150 psi @ 360° F | 5273N251 | 00000 | ||
| 1 1/4 | Hollow | 150 | Hex | 300 psi @ 72° F | 150 psi @ 350° F | 4810T764 | 00000 | 150 psi @ 72° F | 150 psi @ 360° F | 5273N252 | 00000 | ||
| 1 1/2 | Hollow | 150 | Hex | 300 psi @ 72° F | 150 psi @ 350° F | 4810T198 | 00000 | 150 psi @ 72° F | 150 psi @ 360° F | 5273N253 | 00000 | ||
| 2 | Hollow | 150 | Hex | 300 psi @ 72° F | 150 psi @ 350° F | 4810T237 | 00000 | 150 psi @ 72° F | 150 psi @ 360° F | 5273N254 | 00000 | ||
External-Square-Drive Plugs
304 Stainless Steel | 316 Stainless Steel | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Construction | Pressure Class | Body Shape | Max. Pressure @ Temp. | Max. Steam Pressure @ Temp. | Each | Max. Pressure @ Temp. | Max. Steam Pressure @ Temp. | Each | ||||
NPT Male | |||||||||||||
![]() Male | |||||||||||||
| 1/2 | Hollow | 150 | Square | 300 psi @ 72° F | 150 psi @ 350° F | 4464K234 | 00000 | 300 psi @ 72° F | 150 psi @ 350° F | 4452K124 | 00000 | ||
| 3/4 | Hollow | 150 | Square | 300 psi @ 72° F | 150 psi @ 350° F | 4464K235 | 0000 | 300 psi @ 72° F | 150 psi @ 350° F | 4452K125 | 0000 | ||
| 1 | Hollow | 150 | Square | 300 psi @ 72° F | 150 psi @ 350° F | 4464K236 | 0000 | 300 psi @ 72° F | 150 psi @ 350° F | 4452K126 | 0000 | ||
| 1 1/4 | Hollow | 150 | Square | 300 psi @ 72° F | 150 psi @ 350° F | 4464K237 | 00000 | 300 psi @ 72° F | 150 psi @ 350° F | 4452K127 | 00000 | ||
| 1 1/2 | Hollow | 150 | Square | 300 psi @ 72° F | 150 psi @ 350° F | 4464K238 | 00000 | 300 psi @ 72° F | 150 psi @ 350° F | 4452K128 | 00000 | ||
| 2 | Hollow | 150 | Square | 300 psi @ 72° F | 150 psi @ 350° F | 4464K239 | 00000 | 300 psi @ 72° F | 150 psi @ 350° F | 4452K129 | 00000 | ||
| 2 1/2 | Hollow | 150 | Square | 300 psi @ 72° F | 150 psi @ 350° F | 4464K241 | 00000 | 300 psi @ 72° F | 150 psi @ 350° F | 4452K131 | 00000 | ||
| 3 | Hollow | 150 | Square | 300 psi @ 72° F | 150 psi @ 350° F | 4464K242 | 00000 | 300 psi @ 72° F | 150 psi @ 350° F | 4452K132 | 00000 | ||
| 4 | Hollow | 150 | Square | 300 psi @ 72° F | 150 psi @ 350° F | 4464K243 | 00000 | 300 psi @ 72° F | 150 psi @ 350° F | 4452K133 | 000000 | ||
BSPT Male | |||||||||||||
![]() Male | |||||||||||||
| 1/2 | Hollow | 150 | Square | 300 psi @ 72° F | 150 psi @ 350° F | 4810T184 | 0000 | 150 psi @ 72° F | 150 psi @ 360° F | 5273N258 | 00000 | ||
| 3/4 | Hollow | 150 | Square | 300 psi @ 72° F | 150 psi @ 350° F | 4810T185 | 00000 | 150 psi @ 72° F | 150 psi @ 360° F | 5273N259 | 00000 | ||
| 1 | Hollow | 150 | Square | 300 psi @ 72° F | 150 psi @ 350° F | 4810T186 | 00000 | 150 psi @ 72° F | 150 psi @ 360° F | 5273N261 | 00000 | ||
| 1 1/4 | Hollow | 150 | Square | 300 psi @ 72° F | 150 psi @ 350° F | 4810T775 | 00000 | 150 psi @ 72° F | 150 psi @ 360° F | 5273N262 | 00000 | ||
| 1 1/2 | Hollow | 150 | Square | 300 psi @ 72° F | 150 psi @ 350° F | 4810T188 | 00000 | 150 psi @ 72° F | 150 psi @ 360° F | 5273N263 | 00000 | ||
| 2 | Hollow | 150 | Square | 300 psi @ 72° F | 150 psi @ 350° F | 4810T236 | 00000 | 150 psi @ 72° F | 150 psi @ 360° F | 5273N264 | 00000 | ||
Locknuts
![]() |
304 Stainless Steel | 316 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Max. Pressure @ Temp. | Max. Steam Pressure @ Temp. | Specs. Met | Each | Each | ||||
NPSL Female | |||||||||
| 1/2 | 300 psi @ 72° F | 150 psi @ 350° F | — | 4464K584 | 000000 | 4452K674 | 000000 | ||
| 3/4 | 300 psi @ 72° F | 150 psi @ 350° F | — | 4464K585 | 00000 | 4452K675 | 00000 | ||
| 1 | 300 psi @ 72° F | 150 psi @ 350° F | — | 4464K586 | 00000 | 4452K676 | 00000 | ||
| 1 1/4 | 300 psi @ 72° F | 150 psi @ 350° F | — | 4464K587 | 00000 | 4452K677 | 00000 | ||
| 1 1/2 | 300 psi @ 72° F | 150 psi @ 350° F | — | 4464K588 | 00000 | 4452K678 | 00000 | ||
| 2 | 300 psi @ 72° F | 150 psi @ 350° F | — | 4464K589 | 00000 | 4452K679 | 00000 | ||
| 2 1/2 | 300 psi @ 72° F | 150 psi @ 350° F | — | 4464K591 | 00000 | 4452K681 | 00000 | ||
| 3 | 300 psi @ 72° F | 150 psi @ 350° F | — | 4464K592 | 00000 | 4452K682 | 00000 | ||
| 4 | 300 psi @ 72° F | 150 psi @ 350° F | — | 4464K593 | 00000 | 4452K683 | 00000 | ||
BSPP Female | |||||||||
| 1/2 | Not Rated | Not Rated | DIN 431 | 9027N104 | 0000 | ——— | 0 | ||
| 3/4 | Not Rated | Not Rated | DIN 431 | 9027N106 | 0000 | ——— | 0 | ||
| 1 | Not Rated | Not Rated | DIN 431 | 9027N107 | 00000 | ——— | 0 | ||
Low-Pressure Stainless Steel Threaded Pipe Fittings with Sealant
External-Hex-Drive Plugs
304 Stainless Steel | 316 Stainless Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Construction | Pressure Class | Body Shape | Max. Pressure @ Temp. | Max. Steam Pressure @ Temp. | Each | Each | ||||
NPT Male | |||||||||||
| 1/2 | Hollow | 150 | Hex | 300 psi @ 72° F | 150 psi @ 360° F | 1432N34 | 000000 | 1799N34 | 000000 | ||
| 3/4 | Hollow | 150 | Hex | 300 psi @ 72° F | 150 psi @ 360° F | 1432N35 | 00000 | 1799N35 | 00000 | ||
| 1 | Hollow | 150 | Hex | 300 psi @ 72° F | 150 psi @ 360° F | 1432N36 | 00000 | 1799N36 | 00000 | ||
| 1 1/4 | Hollow | 150 | Hex | 300 psi @ 72° F | 150 psi @ 360° F | 1432N37 | 00000 | 1799N37 | 00000 | ||
| 1 1/2 | Hollow | 150 | Hex | 300 psi @ 72° F | 150 psi @ 360° F | 1432N38 | 00000 | 1799N38 | 00000 | ||
| 2 | Hollow | 150 | Hex | 300 psi @ 72° F | 150 psi @ 360° F | 1432N39 | 00000 | 1799N39 | 00000 | ||
External-Square-Drive Plugs
304 Stainless Steel | 316 Stainless Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Construction | Pressure Class | Body Shape | Max. Pressure @ Temp. | Max. Steam Pressure @ Temp. | Each | Each | ||||
NPT Male | |||||||||||
| 1/2 | Hollow | 150 | Square | 300 psi @ 72° F | 150 psi @ 360° F | 1432N24 | 000000 | 1799N24 | 000000 | ||
| 3/4 | Hollow | 150 | Square | 300 psi @ 72° F | 150 psi @ 360° F | 1432N25 | 00000 | 1799N25 | 00000 | ||
| 1 | Hollow | 150 | Square | 300 psi @ 72° F | 150 psi @ 360° F | 1432N26 | 00000 | 1799N26 | 00000 | ||
| 1 1/4 | Hollow | 150 | Square | 300 psi @ 72° F | 150 psi @ 360° F | 1432N27 | 00000 | 1799N27 | 00000 | ||
| 1 1/2 | Hollow | 150 | Square | 300 psi @ 72° F | 150 psi @ 360° F | 1432N28 | 00000 | 1799N28 | 00000 | ||
| 2 | Hollow | 150 | Square | 300 psi @ 72° F | 150 psi @ 360° F | 1432N29 | 00000 | 1799N29 | 00000 | ||
Extreme-Pressure Stainless Steel Threaded Pipe Fittings
External-Hex-Drive Plugs
![]() |
Male |
316 Stainless Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Dash Size | Construction | Body Shape | Max. Pressure @ Temp. | Max. Steam Pressure @ Temp. | Each | |||
NPTF Male | |||||||||
| 1/4 | 04 | Hollow | Hex | 7,200 psi @ 72° F | 7,200 psi @ 300° F | 51205K391 | 000000 | ||
| 3/8 | 06 | Hollow | Hex | 7,200 psi @ 72° F | 7,200 psi @ 300° F | 51205K393 | 00000 | ||
| 1/2 | 08 | Hollow | Hex | 7,200 psi @ 72° F | 7,200 psi @ 300° F | 51205K395 | 00000 | ||
| 3/4 | 12 | Hollow | Hex | 6,600 psi @ 72° F | 6,600 psi @ 300° F | 51205K396 | 00000 | ||
| 1 | 16 | Hollow | Hex | 5,400 psi @ 72° F | 5,400 psi @ 300° F | 51205K425 | 00000 | ||
External-Hex-Drive Plugs with Gasket
316 Stainless Steel | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Thread Size | Dash Size | Construction | Body Shape | Gasket Material | Max. Pressure @ Temp. | Each | |||
BSPP Male | ||||||||||
| 1/8 | — | 02 | Hollow | Hex | Buna-N | 5,000 psi @ 72° F | 4822T297 | 000000 | ||
| 1/4 | — | 04 | Hollow | Hex | Buna-N | 5,000 psi @ 72° F | 4822T298 | 00000 | ||
| 3/8 | — | 06 | Hollow | Hex | Buna-N | 5,000 psi @ 72° F | 4822T299 | 00000 | ||
| 1/2 | — | 08 | Hollow | Hex | Buna-N | 4,500 psi @ 72° F | 4822T301 | 00000 | ||
| 3/4 | — | 12 | Hollow | Hex | Buna-N | 3,600 psi @ 72° F | 4822T302 | 00000 | ||
UN/UNF (SAE Straight) Male | ||||||||||
| — | 3/8"-24 | 03 | Hollow | Hex | Fluoroelastomer | 9,000 psi @ 72° F | 51205K286 | 00000 | ||
| — | 7/16"-20 | 04 | Hollow | Hex | Fluoroelastomer | 9,000 psi @ 72° F | 51205K287 | 00000 | ||
| — | 1/2"-20 | 05 | Hollow | Hex | Fluoroelastomer | 7,200 psi @ 72° F | 51205K288 | 00000 | ||
| — | 9/16"-18 | 06 | Hollow | Hex | Fluoroelastomer | 7,200 psi @ 72° F | 51205K289 | 00000 | ||
| — | 3/4"-16 | 08 | Hollow | Hex | Fluoroelastomer | 7,200 psi @ 72° F | 51205K291 | 00000 | ||
| — | 7/8"-14 | 10 | Hollow | Hex | Fluoroelastomer | 7,200 psi @ 72° F | 51205K292 | 00000 | ||
| — | 1 1/16"-12 | 12 | Hollow | Hex | Fluoroelastomer | 7,200 psi @ 72° F | 51205K293 | 00000 | ||
| — | 1 5/16"-12 | 16 | Hollow | Hex | Fluoroelastomer | 6,600 psi @ 72° F | 51205K294 | 000000 | ||
High-Pressure Stainless Steel Threaded Pipe Fittings
External-Hex-Drive Plugs
![]() |
Male |
316 Stainless Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Dash Size | Construction | Body Shape | Max. Pressure @ Temp. | Max. Steam Pressure @ Temp. | Each | |||
BSPP Male | |||||||||
| 1/8 | 02 | Hollow | Hex | 2,000 psi @ 72° F | Not Rated | 4443K867 | 000000 | ||
| 1/4 | 04 | Hollow | Hex | 2,000 psi @ 72° F | Not Rated | 4443K868 | 00000 | ||
| 3/8 | 06 | Hollow | Hex | 2,000 psi @ 72° F | Not Rated | 4443K869 | 00000 | ||
| 1/2 | 08 | Hollow | Hex | 2,000 psi @ 72° F | Not Rated | 4443K871 | 00000 | ||
| 3/4 | 12 | Hollow | Hex | 2,000 psi @ 72° F | Not Rated | 4443K872 | 00000 | ||
External-Hex-Drive Plugs with Gasket
![]() |
Male |
316 Stainless Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Dash Size | Construction | Body Shape | Gasket Material | Max. Pressure @ Temp. | Each | |||
BSPP Male | |||||||||
| 1 | 16 | Hollow | Hex | Buna-N | 2,900 psi @ 72° F | 4822T303 | 000000 | ||
| 1 1/4 | 20 | Hollow | Hex | Buna-N | 2,300 psi @ 72° F | 4822T304 | 000000 | ||
| 1 1/2 | 24 | Hollow | Hex | Buna-N | 1,800 psi @ 72° F | 4822T305 | 000000 | ||
| 2 | 32 | Hollow | Hex | Buna-N | 1,200 psi @ 72° F | 4822T306 | 000000 | ||
Miniature Medium-Pressure Stainless Steel Threaded Pipe Fittings
External-Hex-Drive Plugs with Gasket
316 Stainless Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Construction | Body Shape | Gasket Material | Max. Pressure @ Temp. | Max. Steam Pressure @ Temp. | Each | |||
BSPP Male | |||||||||
| 1/4 | Hollow | Hex | Fluoroelastomer | 500 psi @ 72° F | 100 psi @ 350° F | 8767N122 | 000000 | ||
Precision Extreme-Pressure Stainless Steel Threaded Pipe Fittings
External-Hex-Drive Plugs
![]() |
Male |
316 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
Pipe Size | Construction | Body Shape | Max. Pressure @ Temp. | Max. Steam Pressure @ Temp. | Each | |||
NPT Male | ||||||||
| 1/16 | Hollow | Hex | 10,000 psi @ 72° F | 10,000 psi @ 300° F | 48805K149 | 00000 | ||





































