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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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About Threaded Studs and Rods
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About Socket Head Screws
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About Hex Head Screws and Bolts
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Alloy Steel Socket Head Screws
With a tensile strength of 170,000 psi, these alloy steel screws are stronger than Grade 8 steel screws. Length is measured from under the head.
Black-oxide steel screws are mildly corrosion resistant in dry environments.
Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch.
Screws that meet ASTM A574, ASTM A574M, and ISO 898-1 comply with specifications and testing requirements for material quality.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
1 3/8"-6 | |||||||||||
Black-Oxide Alloy Steel | |||||||||||
| 5" | Fully Threaded | __ | Coarse | 2 1/16" | 1 3/8" | 1" | 170,000 | ASTM A574 | 1 | 000000000 | 000000 |
| 6" | Partially Threaded | 3 3/8" | Coarse | 2 1/16" | 1 3/8" | 1" | 170,000 | ASTM A574 | 1 | 000000000 | 00000 |
| 8" | Partially Threaded | 3 3/8" | Coarse | 2 1/16" | 1 3/8" | 1" | 170,000 | ASTM A574 | 1 | 000000000 | 00000 |
| 10" | Partially Threaded | 3 3/8" | Coarse | 2 1/16" | 1 3/8" | 1" | 170,000 | ASTM A574 | 1 | 000000000 | 00000 |
| 12" | Partially Threaded | 3 3/8" | Coarse | 2 1/16" | 1 3/8" | 1" | 170,000 | ASTM A574 | 1 | 000000000 | 000000 |
18-8 Stainless Steel Hex Head Screws
Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic. Length is measured from under the head.
Match the thread spacing of mating components. Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch. Screws that meet ASME or ISO (formerly DIN) specifications comply with these dimensional standards.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing | Wd. | Ht. | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Threading | Pkg. | |
18-8 Stainless Steel | |||||||||||
1 3/8"-6 | |||||||||||
| 3 1/2" | Fully Threaded | __ | Coarse | 2 1/16" | 27/32" | 70,000 | __ | 1 | Fully Threaded | 000000000 | 000000 |
| 4" | Partially Threaded | 3" | Coarse | 2 1/16" | 27/32" | 70,000 | ASME B18.2.1 | 1 | Partially Threaded | 000000000 | 00000 |
| 5" | Partially Threaded | 3" | Coarse | 2 1/16" | 27/32" | 70,000 | ASME B18.2.1 | 1 | Partially Threaded | 000000000 | 00000 |
| 6" | Partially Threaded | 3" | Coarse | 2 1/16" | 27/32" | 70,000 | ASME B18.2.1 | 1 | Partially Threaded | 000000000 | 00000 |
Medium-Strength Steel Threaded Rods—Grade B7
These Grade B7 threaded rods meet the pressure and temperature requirements of ASTM A193 and are often used to secure pressure tanks, valves, and flanges.
For technical drawings and 3-D models, click on a part number.
Low-Strength Steel Threaded Rods
About half the strength of medium-strength steel threaded rods, use these for light duty hanging, mounting, and fastening.
Zinc-plated steel threaded rods are corrosion resistant in wet environments.
For technical drawings and 3-D models, click on a part number.
High-Strength Steel Threaded Rods
Grade 8 steel threaded rods are about 25% stronger than medium-strength steel rods.
For technical drawings and 3-D models, click on a part number.
18-8 Stainless Steel Threaded Rods
18-8 stainless steel threaded rods have good chemical resistance and may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.