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DFARS Specialty Metals
Steel Socket Head Screws
 |
Fully Threaded |
 |
Partially Threaded |
Made of alloy steel, these screws are the standard for high-strength fastening. Use them in high-load applications such as dies, presses, and heavy equipment. The deep, six-point socket keeps the hex key from slipping out and damaging the drive.
Length is measured from under the head.
Black-Oxide Alloy Steel—Typically chosen for their appearance, these screws have a dark, matte coating to create a finished look. They offer minimal corrosion resistance, so they're best for dry environments.
Zinc-Plated Alloy Steel—A common choice for areas with occasional exposure to moisture.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Dia. | Ht. | Threading | Thread Spacing | Tensile Strength, psi | Pkg. Qty. | Pkg. | |||
Black-Oxide Alloy Steel | ||||||||||
4-48 | ||||||||||
| 1/8" | 0.183" | 0.112" | Fully Threaded | Fine | 170,000 | 10 | 91251A234 | 00000 | ||
| 3/16" | 0.183" | 0.112" | Fully Threaded | Fine | 170,000 | 10 | 91251A235 | 0000 | ||
| 1/4" | 0.183" | 0.112" | Fully Threaded | Fine | 170,000 | 10 | 91864A020 | 0000 | ||
| 5/16" | 0.183" | 0.112" | Fully Threaded | Fine | 170,000 | 10 | 91251A236 | 0000 | ||
| 3/8" | 0.183" | 0.112" | Fully Threaded | Fine | 170,000 | 10 | 91864A083 | 0000 | ||
| 7/16" | 0.183" | 0.112" | Fully Threaded | Fine | 170,000 | 10 | 91251A237 | 00000 | ||
| 1/2" | 0.183" | 0.112" | Fully Threaded | Fine | 170,000 | 25 | 91864A021 | 00000 | ||
| 5/8" | 0.183" | 0.112" | Fully Threaded | Fine | 170,000 | 25 | 91251A840 | 00000 | ||
| 3/4" | 0.183" | 0.112" | Fully Threaded | Fine | 170,000 | 25 | 91251A842 | 00000 | ||
| 1" | 0.183" | 0.112" | Partially Threaded | Fine | 170,000 | 25 | 91251A168 | 00000 | ||
| 1 1/4" | 0.183" | 0.112" | Partially Threaded | Fine | 170,000 | 1 | 91251A514 | 0000 | ||
| 1 1/2" | 0.183" | 0.112" | Partially Threaded | Fine | 170,000 | 10 | 91251A838 | 00000 | ||
| 1 3/4" | 0.183" | 0.112" | Partially Threaded | Fine | 170,000 | 1 | 90044A293 | 0000 | ||
| 2" | 0.183" | 0.112" | Partially Threaded | Fine | 170,000 | 1 | 90044A294 | 0000 | ||
Zinc-Plated Alloy Steel | ||||||||||
4-48 | ||||||||||
| 1/4" | 0.183" | 0.112" | Fully Threaded | Fine | 170,000 | 100 | 90128A104 | 00000 | ||
| 3/8" | 0.183" | 0.112" | Fully Threaded | Fine | 170,000 | 100 | 90128A109 | 00000 | ||
| 1/2" | 0.183" | 0.112" | Fully Threaded | Fine | 170,000 | 100 | 90128A111 | 00000 | ||
| 3/4" | 0.183" | 0.112" | Fully Threaded | Fine | 170,000 | 100 | 90128A116 | 00000 | ||
| 1" | 0.183" | 0.112" | Partially Threaded | Fine | 170,000 | 50 | 90128A117 | 00000 | ||
Stainless Steel Socket Head Screws
 |
Fully Threaded |
 |
Partially Threaded |
These screws won't rust or corrode when exposed to moisture and chemicals. Their deep, six-point socket keeps hex keys from slipping out and damaging the drive.
Length is measured from under the head.
18-8 Stainless Steel—The choice for wet and outdoor environments, these screws won't rust. However, they don't hold up to the harsh chemicals that 316 stainless steel screws can.
Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel screws, these screws won't degrade when exposed to harsh weather, salt water, and most chemicals.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Dia. | Ht. | Threading | Thread Spacing | Tensile Strength, psi | Pkg. Qty. | Pkg. | |||
18-8 Stainless Steel | ||||||||||
4-48 | ||||||||||
| 1/8" | 0.183" | 0.112" | Fully Threaded | Fine | 70,000 | 100 | 92196A228 | 00000 | ||
| 3/16" | 0.183" | 0.112" | Fully Threaded | Fine | 70,000 | 100 | 92196A229 | 00000 | ||
| 1/4" | 0.183" | 0.112" | Fully Threaded | Fine | 70,000 | 25 | 92196A171 | 0000 | ||
| 3/8" | 0.183" | 0.112" | Fully Threaded | Fine | 70,000 | 25 | 92196A173 | 0000 | ||
| 1/2" | 0.183" | 0.112" | Fully Threaded | Fine | 70,000 | 25 | 92196A175 | 0000 | ||
| 5/8" | 0.183" | 0.112" | Fully Threaded | Fine | 70,000 | 50 | 92196A230 | 0000 | ||
| 3/4" | 0.183" | 0.112" | Fully Threaded | Fine | 70,000 | 50 | 92196A231 | 0000 | ||
| 1" | 0.183" | 0.112" | Partially Threaded | Fine | 70,000 | 50 | 90696A169 | 0000 | ||
Highly Corrosion-Resistant 316 Stainless Steel | ||||||||||
4-48 | ||||||||||
| 1/4" | 0.183" | 0.112" | Fully Threaded | Fine | 70,000 | 50 | 92185A166 | 0000 | ||
| 3/8" | 0.183" | 0.112" | Fully Threaded | Fine | 70,000 | 50 | 92185A167 | 0000 | ||
| 1/2" | 0.183" | 0.112" | Fully Threaded | Fine | 70,000 | 50 | 92185A168 | 00000 | ||
Steel Hex-Drive Flat Head Screws
 |
Our strongest hex-drive flat head screws. They're made of alloy steel, so they have nearly twice the tensile strength of other screws. With six contact points, the hex drive withstands more torque than slotted and Phillips to securely grip your driver without slipping and stripping the drive.
Length is measured from the top of the head.
Black-Oxide Alloy Steel—Typically chosen for their appearance, these screws have a dark, matte coating to create a finished look. They offer minimal corrosion resistance, so they're best for dry environments.
Zinc-Plated Alloy Steel—A common choice for areas with occasional exposure to moisture.
Standard Profile—Standard-profile heads are the most common choice for flat head screws.
Head | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Countersink Angle | Flat Head Profile | Dia. | Ht. | Threading | Tensile Strength, psi | Specs. Met | Pkg. Qty. | Pkg. | |||
Black-Oxide Alloy Steel | ||||||||||||
4-48 | ||||||||||||
| 1/4" | 82° | Standard | 0.255" | 0.083" | Fully Threaded | 130,000 | ASTM F835 | 25 | 91253A141 | 00000 | ||
| 3/8" | 82° | Standard | 0.255" | 0.083" | Fully Threaded | 130,000 | ASTM F835 | 25 | 91253A142 | 0000 | ||
| 1/2" | 82° | Standard | 0.255" | 0.083" | Fully Threaded | 130,000 | ASTM F835 | 25 | 91253A143 | 0000 | ||
| 5/8" | 82° | Standard | 0.255" | 0.083" | Fully Threaded | 130,000 | ASME B18.3, ASTM F835 | 50 | 90429A123 | 00000 | ||
| 3/4" | 82° | Standard | 0.255" | 0.083" | Fully Threaded | 130,000 | ASME B18.3, ASTM F835 | 50 | 90429A124 | 00000 | ||
| 1" | 82° | Standard | 0.255" | 0.083" | Fully Threaded | 130,000 | ASME B18.3, ASTM F835 | 25 | 90429A125 | 00000 | ||
Zinc-Plated Alloy Steel | ||||||||||||
4-48 | ||||||||||||
| 1/4" | 82° | Standard | 0.255" | 0.083" | Fully Threaded | 130,000 | ASTM F835 | 50 | 91263A381 | 00000 | ||
| 3/8" | 82° | Standard | 0.255" | 0.083" | Fully Threaded | 130,000 | ASTM F835 | 50 | 91263A382 | 00000 | ||
| 1/2" | 82° | Standard | 0.255" | 0.083" | Fully Threaded | 130,000 | ASTM F835 | 50 | 91263A383 | 00000 | ||
Stainless Steel Button Head Hex-Drive Screws
 |
These button head screws won't corrode from moisture and chemicals, but they aren't as strong as alloy steel screws. The button head looks similar to a pan head, but it's lower and more compact, taking up less space. With six contact points, the hex drive withstands more torque than slotted and Phillips to securely grip your driver.
Length is measured from under the head.
18-8 Stainless Steel—The choice for wet and outdoor environments, these screws won't rust. However, they don't hold up to the harsh chemicals that 316 stainless steel can.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Dia. | Ht. | Threading | Tensile Strength, psi | Specs. Met | Pkg. Qty. | Pkg. | |||
18-8 Stainless Steel | ||||||||||
4-48 | ||||||||||
| 1/8" | 0.213" | 0.059" | Fully Threaded | 70,000 | ASME B18.3 | 25 | 92949A903 | 000000 | ||
| 3/16" | 0.213" | 0.059" | Fully Threaded | 70,000 | ASME B18.3 | 25 | 92949A904 | 00000 | ||
| 1/4" | 0.213" | 0.059" | Fully Threaded | 70,000 | ASME B18.3 | 10 | 92949A327 | 0000 | ||
| 3/8" | 0.213" | 0.059" | Fully Threaded | 70,000 | ASME B18.3 | 10 | 92949A328 | 0000 | ||
| 1/2" | 0.213" | 0.059" | Fully Threaded | 70,000 | ASME B18.3 | 10 | 92949A329 | 0000 | ||
Stainless Steel Hex-Drive Flat Head Screws
 |
The most corrosion-resistant hex-drive flat head screws we offer. Made of stainless steel, they won't rust or corrode when exposed to moisture and chemicals, but they're not as strong as alloy steel. With six contact points, the hex drive withstands more torque than slotted and Phillips to securely grip your driver without slipping and stripping the drive.
Length is measured from the top of the head.
18-8 Stainless Steel—The choice for wet and outdoor environments, these screws won't rust. However, they don't hold up to the harsh chemicals that 316 stainless steel can.
Standard Profile—Standard-profile heads are the most common choice for flat head screws.
Head | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Countersink Angle | Flat Head Profile | Dia. | Ht. | Threading | Tensile Strength, psi | Specs. Met | Pkg. Qty. | Pkg. | |||
18-8 Stainless Steel | ||||||||||||
4-48 | ||||||||||||
| 1/4" | 82° | Standard | 0.255" | 0.083" | Fully Threaded | 70,000 | ASME B18.3 | 10 | 92210A023 | 00000 | ||
| 3/8" | 82° | Standard | 0.255" | 0.083" | Fully Threaded | 70,000 | ASME B18.3 | 10 | 92210A024 | 0000 | ||
| 1/2" | 82° | Standard | 0.255" | 0.083" | Fully Threaded | 70,000 | ASME B18.3 | 10 | 92210A025 | 0000 | ||
Steel Button Head Hex-Drive Screws
 |
Made of alloy steel, these screws have nearly twice the tensile strength of other steel screws. The button head looks similar to a pan head, but it's lower and more compact, taking up less space. With six contact points, the hex drive withstands more torque than slotted and Phillips to securely grip your driver.
Length is measured from under the head.
Black-Oxide Alloy Steel—Typically chosen for their appearance, these screws have a dark, matte coating to create a finished look. They offer minimal corrosion resistance, so they're best for dry environments.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Dia. | Ht. | Threading | Tensile Strength, psi | Specs. Met | Pkg. Qty. | Pkg. | |||
Black-Oxide Alloy Steel | ||||||||||
4-48 | ||||||||||
| 1/4" | 0.213" | 0.059" | Fully Threaded | 120,000 | ASME B18.3, ASTM F835 | 25 | 91255A003 | 00000 | ||
| 3/8" | 0.213" | 0.059" | Fully Threaded | 120,000 | ASME B18.3, ASTM F835 | 25 | 91255A004 | 00000 | ||
| 1/2" | 0.213" | 0.059" | Fully Threaded | 120,000 | ASME B18.3, ASTM F835 | 25 | 91255A005 | 00000 | ||
Brass Button Head Hex-Drive Screws
