For ID For ID |
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For Surface Type For Surface Type |
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Head Diameter Head Diameter |
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For OD For OD |
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Drive Style Drive Style |
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External Square | External 12- Point |
For Connection Type For Connection Type |
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Electrical Properties Electrical Properties |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Specifications Met Specifications Met |
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Maximum Surface Resistivity Maximum Surface Resistivity |
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Hardness Hardness |
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Conductive Round Plugs

With a surface resistivity of less than 105 ohms/sq, these plugs not only dissipate electrical charges, but can be used as an electrical shield. All meet the static requirements of MIL-PRF-81705. They fit electrical connectors with straight threads as well as unthreaded bayonet-type connectors.
For technical drawings and 3-D models, click on a part number.
For ID | For Thread Dia. | Ht. | Head Dia. | Max. Surface Resistivity | Max. Temp., °F | Hardness | Color | Specifications Met | Pkg. Qty. | Pkg. | |
Polyethylene Plastic | |||||||||||
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15/32" | 1/2" | 5/8" | 11/16" | 105 ohms/sq | 140° | Durometer 45D | Black | MIL-PRF-81705 | 50 | 00000000 | 000000 |
19/32" | 5/8" | 5/8" | 3/4" | 105 ohms/sq | 140° | Durometer 45D | Black | MIL-PRF-81705 | 50 | 00000000 | 00000 |
23/32" | 3/4" | 5/8" | 7/8" | 105 ohms/sq | 140° | Durometer 45D | Black | MIL-PRF-81705 | 50 | 00000000 | 00000 |
27/32" | 7/8" | 5/8" | 1 1/16" | 105 ohms/sq | 140° | Durometer 45D | Black | MIL-PRF-81705 | 50 | 00000000 | 00000 |
31/32" | 1" | 5/8" | 1 3/16" | 105 ohms/sq | 140° | Durometer 45D | Black | MIL-PRF-81705 | 50 | 00000000 | 00000 |
1 3/32" | 1 1/8" | 5/8" | 1 1/4" | 105 ohms/sq | 140° | Durometer 45D | Black | MIL-PRF-81705 | 25 | 00000000 | 00000 |
1 7/32" | 1 1/4" | 5/8" | 1 1/2" | 105 ohms/sq | 140° | Durometer 45D | Black | MIL-PRF-81705 | 25 | 00000000 | 00000 |
1 11/32" | 1 3/8" | 5/8" | 1 17/32" | 105 ohms/sq | 140° | Durometer 45D | Black | MIL-PRF-81705 | 10 | 00000000 | 0000 |
1 15/32" | 1 1/2" | 5/8" | 1 11/16" | 105 ohms/sq | 140° | Durometer 45D | Black | MIL-PRF-81705 | 25 | 00000000 | 00000 |
1 31/32" | 2" | 5/8" | 2 5/32" | 105 ohms/sq | 140° | Durometer 45D | Black | MIL-PRF-81705 | 10 | 00000000 | 00000 |
Antistatic Round Plugs

Keep equipment safe from electrical currents with these plugs that have a surface resistivity of less than 1012 ohms/sq. All meet the static requirements of MIL-PRF-81705. They fit electrical connectors with straight threads as well as unthreaded bayonet-type connectors.
For technical drawings and 3-D models, click on a part number.
For ID | For Thread Dia. | Ht. | Head Dia. | Max. Surface Resistivity | Max. Temp., °F | Hardness | Color | Specifications Met | Pkg. Qty. | Pkg. | |
Polyethylene Plastic | |||||||||||
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15/32" | 1/2" | 5/8" | 11/16" | 1012 ohms/sq | 140° | Durometer 60A | Pink | MIL-PRF-81705 | 100 | 00000000 | 000000 |
19/32" | 5/8" | 5/8" | 3/4" | 1012 ohms/sq | 140° | Durometer 60A | Pink | MIL-PRF-81705 | 100 | 00000000 | 00000 |
21/32" | 3/4" | 5/8" | 7/8" | 1012 ohms/sq | 140° | Durometer 60A | Pink | MIL-PRF-81705 | 100 | 00000000 | 00000 |
27/32" | 7/8" | 5/8" | 1 1/16" | 1012 ohms/sq | 140° | Durometer 60A | Pink | MIL-PRF-81705 | 50 | 00000000 | 00000 |
29/32" | 1" | 5/8" | 1 1/8" | 1012 ohms/sq | 140° | Durometer 60A | Pink | MIL-PRF-81705 | 50 | 00000000 | 00000 |
1 1/32" | 1 1/8" | 5/8" | 1 1/4" | 1012 ohms/sq | 140° | Durometer 60A | Pink | MIL-PRF-81705 | 50 | 00000000 | 00000 |
1 5/32" | 1 1/4" | 5/8" | 1 7/16" | 1012 ohms/sq | 140° | Durometer 60A | Pink | MIL-PRF-81705 | 50 | 00000000 | 00000 |
1 15/32" | 1 1/2" | 5/8" | 1 11/16" | 1012 ohms/sq | 140° | Durometer 60A | Pink | MIL-PRF-81705 | 50 | 00000000 | 00000 |
1 31/32" | 2" | 5/8" | 2 5/32" | 1012 ohms/sq | 140° | Durometer 60A | Pink | MIL-PRF-81705 | 25 | 00000000 | 00000 |
Threaded Round Plugs for NPT Pipe


Protect internally threaded NPT connections from contaminants during fabrication and storage.
Install external square-drive plugs manually or with a square-drive wrench or socket.
Install external 12-point drive plugs manually or with a 12-point wrench or socket.
For technical drawings and 3-D models, click on a part number.
Pipe Size | Ht. | Max. Temp., °F | Hardness | Color | Pkg. Qty. | Pkg. | |
External Square Drive | |||||||
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Polyethylene Plastic | |||||||
1/8 | 7/16" | 160° | Durometer 65D | Red | 100 | 0000000 | 00000 |
1/4 | 1/2" | 160° | Durometer 65D | Red | 100 | 0000000 | 00000 |
3/8 | 1/2" | 160° | Durometer 65D | Red | 100 | 0000000 | 00000 |
1/2 | 19/32" | 160° | Durometer 65D | Red | 100 | 0000000 | 00000 |
3/4 | 5/8" | 160° | Durometer 65D | Red | 50 | 0000000 | 00000 |
1 | 23/32" | 160° | Durometer 65D | Red | 25 | 0000000 | 00000 |
1 1/4 | 3/4" | 160° | Durometer 65D | Red | 25 | 0000000 | 00000 |
1 1/2 | 31/32" | 160° | Durometer 65D | Red | 10 | 0000000 | 00000 |
External 12-Point Drive | |||||||
Polyethylene Plastic | |||||||
1/8 | 9/32" | 160° | Durometer 65D | Red | 100 | 0000000 | 00000 |
1/4 | 3/8" | 160° | Durometer 65D | Red | 100 | 0000000 | 00000 |
3/8 | 11/32" | 160° | Durometer 65D | Red | 100 | 0000000 | 00000 |
1/2 | 9/16" | 160° | Durometer 65D | Red | 100 | 0000000 | 00000 |
3/4 | 5/8" | 160° | Durometer 65D | Red | 50 | 0000000 | 00000 |
Antistatic Round Caps


Keep equipment safe from electrical currents with these caps that have a surface resistivity of less than 1012 ohms/sq. All meet the static requirements of MIL-PRF-81705. They fit electrical connectors with straight threads as well as unthreaded bayonet-type connectors.
For technical drawings and 3-D models, click on a part number.
For OD | For Thread Dia. | Inside Ht. | Max. Temp., °F | Max. Surface Resistivity | Color | Specifications Met | Pkg. Qty. | Pkg. | |
Rigid Plastic | |||||||||
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0.245" | 1/4" | 1/2" | 140° | 1012 ohms/sq | Pink | MIL-PRF-81705 | 100 | 00000000 | 000000 |
0.36" | 3/8" | 1/2" | 140° | 1012 ohms/sq | Pink | MIL-PRF-81705 | 100 | 00000000 | 00000 |
0.48" | 1/2" | 1/2" | 140° | 1012 ohms/sq | Pink | MIL-PRF-81705 | 100 | 00000000 | 00000 |
0.6" | 5/8" | 1/2" | 140° | 1012 ohms/sq | Pink | MIL-PRF-81705 | 100 | 00000000 | 00000 |
0.72" | 3/4" | 1/2" | 140° | 1012 ohms/sq | Pink | MIL-PRF-81705 | 100 | 00000000 | 00000 |
0.85" | 7/8" | 1/2" | 140° | 1012 ohms/sq | Pink | MIL-PRF-81705 | 50 | 00000000 | 00000 |
0.973" | 1" | 1/2" | 140° | 1012 ohms/sq | Pink | MIL-PRF-81705 | 50 | 00000000 | 00000 |
1.231" | 1 1/4" | 9/16" | 140° | 1012 ohms/sq | Pink | MIL-PRF-81705 | 50 | 00000000 | 00000 |
1.463" | 1 1/2" | 9/16" | 140° | 1012 ohms/sq | Pink | MIL-PRF-81705 | 50 | 00000000 | 00000 |
Conductive Round Caps

With a surface resistivity of less than 105 ohms/sq, these caps not only dissipate electrical charges, but can be used as an electrical shield. All meet the static requirements of MIL-PRF-81705. They fit electrical connectors with straight threads as well as unthreaded bayonet-type connectors.
For technical drawings and 3-D models, click on a part number.
For OD | For Thread Dia. | Inside Ht. | Max. Temp., °F | Max. Surface Resistivity | Color | Specifications Met | Pkg. Qty. | Pkg. | |
Rigid Plastic | |||||||||
---|---|---|---|---|---|---|---|---|---|
0.244" | 1/4" | 15/32" | 140° | 105 ohms/sq | Black | MIL-PRF-81705 | 50 | 00000000 | 000000 |
0.368" | 3/8" | 1/2" | 140° | 105 ohms/sq | Black | MIL-PRF-81705 | 50 | 00000000 | 00000 |
0.487" | 1/2" | 1/2" | 140° | 105 ohms/sq | Black | MIL-PRF-81705 | 50 | 00000000 | 00000 |
0.607" | 5/8" | 1/2" | 140° | 105 ohms/sq | Black | MIL-PRF-81705 | 50 | 00000000 | 00000 |
0.73" | 3/4" | 1/2" | 140° | 105 ohms/sq | Black | MIL-PRF-81705 | 25 | 00000000 | 00000 |
0.852" | 7/8" | 1/2" | 140° | 105 ohms/sq | Black | MIL-PRF-81705 | 25 | 00000000 | 00000 |
0.992" | 1" | 1/2" | 140° | 105 ohms/sq | Black | MIL-PRF-81705 | 25 | 00000000 | 00000 |
1.244" | 1 1/4" | 9/16" | 140° | 105 ohms/sq | Black | MIL-PRF-81705 | 25 | 00000000 | 00000 |
1.478" | 1 1/2" | 9/16" | 140° | 105 ohms/sq | Black | MIL-PRF-81705 | 25 | 00000000 | 00000 |
Threaded Caps

Protect externally threaded components from contaminants during fabrication and storage.
Aluminum caps withstand temperatures up to 650° F, which is more than four times as high as plastic caps. They are also more abrasion resistant. All meet military specification MIL-C-5501/3 for dust and moisture protection.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||||
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Size | Type | For OD | Inside Ht. | Max. Temp., °F | Specifications Met | Pkg. Qty. | Pkg. | |
Aluminum | ||||||||
For Straight-Thread Pipe | ||||||||
5/16"-24 | UNF | 5/16" | 21/64" | 650° | MIL-C-5501/3 | 50 | 0000000 | 000000 |
3/8"-24 | UNF | 3/8" | 19/64" | 650° | MIL-C-5501/3 | 50 | 0000000 | 00000 |
7/16"-20 | UNF | 7/16" | 15/32" | 650° | MIL-C-5501/3 | 50 | 0000000 | 0000 |
1/2"-20 | UNF | 1/2" | 7/16" | 650° | MIL-C-5501/3 | 50 | 0000000 | 00000 |
9/16"-18 | UNF | 9/16" | 15/32" | 650° | MIL-C-5501/3 | 50 | 0000000 | 00000 |
5/8"-18 | UNF | 5/8" | 33/64" | 650° | MIL-C-5501/3 | 50 | 0000000 | 00000 |
3/4"-16 | UNF | 3/4" | 35/64" | 650° | MIL-C-5501/3 | 50 | 0000000 | 00000 |
7/8"-14 | UNF | 7/8" | 21/32" | 650° | MIL-C-5501/3 | 50 | 0000000 | 00000 |
ForUNStraight-Thread Pipe | ||||||||
1 1/16"-12 | UN | 1 1/16" | 49/64" | 650° | MIL-C-5501/3 | 25 | 0000000 | 00000 |
1 5/16"-12 | UN | 1 5/16" | 49/64" | 650° | MIL-C-5501/3 | 25 | 0000000 | 00000 |
1 5/8"-12 | UN | 1 5/8" | 23/32" | 650° | MIL-C-5501/3 | 10 | 0000000 | 00000 |