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Tension-Indicating Structural Washers
Steel
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Zinc-Plated Steel—A common choice for areas with occasional exposure to moisture.
Steel—Best for dry environments since moisture will cause these washers to rust.
Corrosion-Resistant Galvanized Steel—These washers combine the strength of steel with the rust resistance of stainless steel. They're an economical alternative to 18-8 stainless steel in wet and outdoor environments, but they won't hold up to salt water and chemicals.
For Fastener Strength Grade/Class—If you require screws or nuts with a specific fastener strength rating, make sure your washer matches the grade or class.
For Screw Size | ID | OD | Thk. | For Fastener Strength Grade/Class | Specs. Met | Pkg. Qty. | Pkg. | |||
|---|---|---|---|---|---|---|---|---|---|---|
Zinc-Plated Steel | ||||||||||
| 1/2" | 0.520" | 1.073" | 0.104" to 0.180" | ASTM Grade A490 | ASME B18.2.6, ASTM F959 Type A490 | 5 | 95348A111 | 00000 | ||
| 5/8" | 0.657" | 1.323" | 0.126" to 0.220" | ASTM Grade A490 | ASME B18.2.6, ASTM F959 Type A490 | 5 | 95348A112 | 00000 | ||
| 3/4" | 0.785" | 1.478" | 0.126" to 0.240" | ASTM Grade A490 | ASME B18.2.6, ASTM F959 Type A490 | 5 | 95348A113 | 00000 | ||
| 7/8" | 0.915" | 1.760" | 0.142" to 0.260" | ASTM Grade A490 | ASME B18.2.6, ASTM F959 Type A490 | 1 | 95348A114 | 0000 | ||
| 1" | 1.045" | 2.010" | 0.158" to 0.270" | ASTM Grade A490 | ASME B18.2.6, ASTM F959 Type A490 | 1 | 95348A115 | 0000 | ||
| 1 1/8" | 1.155" | 2.260" | 0.158" to 0.280" | ASTM Grade A490 | ASME B18.2.6, ASTM F959 Type A490 | 1 | 95348A116 | 0000 | ||
| 1 1/4" | 1.310" | 2.510" | 0.158" to 0.280" | ASTM Grade A490 | ASME B18.2.6, ASTM F959 Type A490 | 1 | 95348A117 | 0000 | ||
| 1 1/2" | 1.570" | 3.010" | 0.158" to 0.280" | ASTM Grade A490 | ASME B18.2.6, ASTM F959 Type A490 | 1 | 95348A119 | 0000 | ||
| M16 | 16.7 mm | 33.6 mm | 3.2 mm to 5.5 mm | Class 10.9 | ASME B18.2.6M, ASTM F959 | 5 | 95348A120 | 00000 | ||
| M20 | 21.0 mm | 40.6 mm | 3.6 mm to 6.0 mm | Class 10.9 | ASME B18.2.6M, ASTM F959 | 5 | 95348A121 | 00000 | ||
| M22 | 23.0 mm | 42.9 mm | 3.6 mm to 6.0 mm | Class 10.9 | ASME B18.2.6M, ASTM F959 | 1 | 95348A122 | 0000 | ||
| M24 | 25.1 mm | 48.7 mm | 4.0 mm to 7.0 mm | Class 10.9 | ASME B18.2.6M, ASTM F959 | 1 | 95348A123 | 0000 | ||
| M27 | 28.4 mm | 54.4 mm | 4.0 mm to 7.0 mm | Class 10.9 | ASME B18.2.6M, ASTM F959 | 1 | 95348A124 | 0000 | ||
| M30 | 31.4 mm | 58.4 mm | 4.0 mm to 7.0 mm | Class 10.9 | ASME B18.2.6M, ASTM F959 | 1 | 95348A125 | 0000 | ||
| M36 | 37.7 mm | 70.4 mm | 4.8 mm to 7.5 mm | Class 10.9 | ASME B18.2.6M, ASTM F959 | 1 | 95348A126 | 0000 | ||
Steel | ||||||||||
| 1/2" | 0.520" | 1.073" | 0.104" to 0.111" | ASTM Grade A325 | ASME B18.2.6, ASTM F959 Type A325 | 5 | 91358A005 | 0000 | ||
| 1/2" | 0.520" | 1.073" | 0.104" to 0.180" | ASTM Grade A490 | ASME B18.2.6, ASTM F959 Type A490 | 5 | 91358A501 | 0000 | ||
| 5/8" | 0.657" | 1.323" | 0.126" to 0.133" | ASTM Grade A325 | ASME B18.2.6, ASTM F959 Type A325 | 5 | 91358A010 | 0000 | ||
| 5/8" | 0.657" | 1.323" | 0.126" to 0.220" | ASTM Grade A490 | ASME B18.2.6, ASTM F959 Type A490 | 5 | 91358A502 | 0000 | ||
| 3/4" | 0.785" | 1.478" | 0.142" to 0.240" | ASTM Grade A490 | ASME B18.2.6, ASTM F959 Type A490 | 5 | 91358A503 | 0000 | ||
| 7/8" | 0.915" | 1.760" | 0.142" to 0.149" | ASTM Grade A325 | ASME B18.2.6, ASTM F959 Type A325 | 5 | 91358A020 | 00000 | ||
| 7/8" | 0.915" | 1.760" | 0.158" to 0.260" | ASTM Grade A490 | ASME B18.2.6, ASTM F959 Type A490 | 5 | 91358A504 | 00000 | ||
| 1" | 1.045" | 2.010" | 0.158" to 0.165" | ASTM Grade A325 | ASME B18.2.6, ASTM F959 Type A325 | 5 | 91358A025 | 00000 | ||
| 1" | 1.045" | 2.010" | 0.158" to 0.270" | ASTM Grade A490 | ASME B18.2.6, ASTM F959 Type A490 | 5 | 91358A505 | 00000 | ||
Corrosion-Resistant Galvanized Steel | ||||||||||
| 1/2" | 0.520" | 1.073" | 0.104" to 0.180" | ASTM Grade A325 | ASME B18.2.6, ASTM F959 Type A325 | 5 | 95318A111 | 0000 | ||
| 5/8" | 0.657" | 1.323" | 0.126" to 0.220" | ASTM Grade A325 | ASME B18.2.6, ASTM F959 Type A325 | 5 | 95318A112 | 0000 | ||
| 3/4" | 0.785" | 1.478" | 0.142" to 0.230" | ASTM Grade A325 | ASME B18.2.6, ASTM F959 Type A325 | 5 | 95318A113 | 00000 | ||
| 7/8" | 0.915" | 1.760" | 0.158" to 0.240" | ASTM Grade A325 | ASME B18.2.6, ASTM F959 Type A325 | 1 | 95318A114 | 0000 | ||
| 1" | 1.045" | 2.010" | 0.158" to 0.270" | ASTM Grade A325 | ASME B18.2.6, ASTM F959 Type A325 | 1 | 95318A115 | 0000 | ||
| 1 1/8" | 1.155" | 2.260" | 0.158" to 0.270" | ASTM Grade A325 | ASME B18.2.6, ASTM F959 Type A325 | 1 | 95318A116 | 0000 | ||
| 1 1/4" | 1.310" | 2.510" | 0.158" to 0.270" | ASTM Grade A325 | ASME B18.2.6, ASTM F959 Type A325 | 1 | 95318A117 | 0000 | ||
| 1 3/8" | 1.442" | 2.760" | 0.158" to 0.270" | ASTM Grade A325 | ASME B18.2.6, ASTM F959 Type A325 | 1 | 95318A118 | 0000 | ||
| 1 1/2" | 1.570" | 3.010" | 0.158" to 0.270" | ASTM Grade A325 | ASME B18.2.6, ASTM F959 Type A325 | 1 | 95318A119 | 0000 | ||
| M12 | 12.6 mm | 27.3 mm | 2.6 mm to 4.6 mm | Class 8.8 | ASME B18.2.6M, ASTM F959 | 10 | 95318A120 | 00000 | ||
| M16 | 16.7 mm | 33.6 mm | 3.2 mm to 5.5 mm | Class 8.8 | ASME B18.2.6M, ASTM F959 | 5 | 95318A121 | 0000 | ||
| M20 | 21.0 mm | 40.6 mm | 3.6 mm to 6.0 mm | Class 8.8 | ASME B18.2.6M, ASTM F959 | 5 | 95318A122 | 00000 | ||
| M22 | 23.0 mm | 42.9 mm | 3.6 mm to 6.0 mm | Class 8.8 | ASME B18.2.6M, ASTM F959 | 5 | 95318A123 | 00000 | ||
| M24 | 25.1 mm | 48.7 mm | 4.0 mm to 7.0 mm | Class 8.8 | ASME B18.2.6M, ASTM F959 | 1 | 95318A124 | 0000 | ||
| M27 | 28.4 mm | 54.4 mm | 4.0 mm to 7.0 mm | Class 8.8 | ASME B18.2.6M, ASTM F959 | 1 | 95318A125 | 0000 | ||
| M30 | 31.4 mm | 58.4 mm | 4.0 mm to 7.0 mm | Class 8.8 | ASME B18.2.6M, ASTM F959 | 1 | 95318A126 | 00000 | ||
| M36 | 37.7 mm | 70.4 mm | 4.8 mm to 7.5 mm | Class 8.8 | ASME B18.2.6M, ASTM F959 | 1 | 95318A127 | 0000 | ||
Tension-Indicating Steel Hex Head Screws
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 |
Fully Threaded |
 |
Partially Threaded |
An indicator dot changes from red to black when these screws are properly tightened. If they come loose, the dot changes back to red. Also known as SmartBolts, they let you know when vibration or heavy use loosen screws in high-stress applications, such as valves, pumps, and motors. The head's six flat sides keep wrenches and sockets from slipping and rounding off the drive.
Length is measured from under the head.
High-Strength Fastener—Commonly used to fasten components in valves, pumps, motors, and other high-stress applications. These screws have a tensile strength of 125,000 to 160,000 psi.
Zinc-Yellow-Chromate-Plated Steel—With slightly better corrosion resistance than zinc-plated steel screws, these stand up to more frequent exposure to moisture.
Head | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Wd. | Ht. | Threading | Thread Spacing | Fastener Strength Grade/Class | Tensile Strength, psi | Tension Indicated, lbf | Indicator Temp., ° F | Each | |||
High-Strength Zinc-Yellow-Chromate-Plated Steel | ||||||||||||
1/2"-13 | ||||||||||||
| 1 1/2" | 3/4" | 3/8" | Fully Threaded | Coarse | SAE Grade 8 | 150,000 | 10,000 | 0 to 165 | 93734A120 | 000000 | ||
| 1 3/4" | 3/4" | 3/8" | Fully Threaded | Coarse | SAE Grade 8 | 150,000 | 10,000 | 0 to 165 | 93734A140 | 00000 | ||
| 2" | 3/4" | 3/8" | Partially Threaded | Coarse | SAE Grade 8 | 150,000 | 10,000 | 0 to 165 | 93734A160 | 00000 | ||
| 2 1/2" | 3/4" | 3/8" | Partially Threaded | Coarse | SAE Grade 8 | 150,000 | 10,500 | 0 to 165 | 93734A180 | 00000 | ||
| 3" | 3/4" | 3/8" | Partially Threaded | Coarse | SAE Grade 8 | 150,000 | 12,000 | 0 to 165 | 93734A200 | 00000 | ||
5/8"-11 | ||||||||||||
| 2" | 15/16" | 29/64" | Fully Threaded | Coarse | SAE Grade 8 | 150,000 | 17,000 | 0 to 165 | 93734A350 | 00000 | ||
| 2 1/2" | 15/16" | 29/64" | Partially Threaded | Coarse | SAE Grade 8 | 150,000 | 17,000 | 0 to 165 | 93734A370 | 00000 | ||
| 3" | 15/16" | 29/64" | Partially Threaded | Coarse | SAE Grade 8 | 150,000 | 19,000 | 0 to 165 | 93734A390 | 00000 | ||
3/4"-10 | ||||||||||||
| 2" | 1 1/8" | 17/32" | Fully Threaded | Coarse | SAE Grade 8 | 150,000 | 26,000 | 0 to 165 | 93734A520 | 00000 | ||
| 3" | 1 1/8" | 17/32" | Partially Threaded | Coarse | SAE Grade 8 | 150,000 | 27,000 | 0 to 165 | 93734A560 | 00000 | ||
