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Left-Hand-Thread Steel Socket Head Screws
 |
Fully Threaded |
 |
Partially Threaded |
 |
No more righty tighty. Turn these screws to the left to tighten. They won't come loose from counterclockwise motions on reverse motors, grinders, and fans. Made of alloy steel, these are some of our strongest screws. Their deep, six-point socket keeps hex keys 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.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Dia. | Ht. | Threading | Thread Spacing | Tensile Strength, psi | Fastener Strength Grade/Class | Each | |||
Black-Oxide Alloy Steel | ||||||||||
6-32 | ||||||||||
| 3/8" | 0.226" | 0.138" | Fully Threaded | Coarse | 170,000 | — | 91670A146 | 000000 | ||
| 1/2" | 0.226" | 0.138" | Fully Threaded | Coarse | 170,000 | — | 91670A148 | 00000 | ||
8-32 | ||||||||||
| 1/2" | 0.27" | 0.164" | Fully Threaded | Coarse | 170,000 | — | 91670A194 | 0000 | ||
| 1" | 0.27" | 0.164" | Fully Threaded | Coarse | 170,000 | — | 91670A199 | 00000 | ||
10-32 | ||||||||||
| 1/2" | 5/16" | 0.19" | Fully Threaded | Fine | 170,000 | — | 91670A310 | 0000 | ||
| 3/4" | 5/16" | 0.19" | Fully Threaded | Fine | 170,000 | — | 91670A313 | 0000 | ||
| 1" | 5/16" | 0.19" | Fully Threaded | Fine | 170,000 | — | 91670A316 | 00000 | ||
| 1 1/2" | 5/16" | 0.19" | Fully Threaded | Fine | 170,000 | — | 91670A319 | 00000 | ||
1/4"-20 | ||||||||||
| 1/2" | 3/8" | 1/4" | Fully Threaded | Coarse | 170,000 | — | 91670A537 | 0000 | ||
| 5/8" | 3/8" | 1/4" | Fully Threaded | Coarse | 170,000 | — | 91670A539 | 0000 | ||
| 3/4" | 3/8" | 1/4" | Fully Threaded | Coarse | 170,000 | — | 91670A540 | 00000 | ||
| 1" | 3/8" | 1/4" | Fully Threaded | Coarse | 170,000 | — | 91670A542 | 00000 | ||
| 1 1/4" | 3/8" | 1/4" | Fully Threaded | Coarse | 170,000 | — | 91670A544 | 00000 | ||
| 1 1/2" | 3/8" | 1/4" | Fully Threaded | Coarse | 170,000 | — | 91670A546 | 00000 | ||
5/16"-18 | ||||||||||
| 3/4" | 15/32" | 5/16" | Fully Threaded | Coarse | 170,000 | — | 91670A581 | 00000 | ||
| 1" | 15/32" | 5/16" | Fully Threaded | Coarse | 170,000 | — | 91670A583 | 00000 | ||
| 1 1/4" | 15/32" | 5/16" | Fully Threaded | Coarse | 170,000 | — | 91670A585 | 00000 | ||
| 1 1/2" | 15/32" | 5/16" | Fully Threaded | Coarse | 170,000 | — | 91670A587 | 00000 | ||
| 2" | 15/32" | 5/16" | Fully Threaded | Coarse | 170,000 | — | 91670A589 | 00000 | ||
3/8"-16 | ||||||||||
| 3/4" | 9/16" | 3/8" | Fully Threaded | Coarse | 170,000 | — | 91670A622 | 00000 | ||
| 1" | 9/16" | 3/8" | Fully Threaded | Coarse | 170,000 | — | 91670A624 | 00000 | ||
| 1 1/4" | 9/16" | 3/8" | Fully Threaded | Coarse | 170,000 | — | 91670A626 | 00000 | ||
1/2"-13 | ||||||||||
| 1" | 3/4" | 1/2" | Fully Threaded | Coarse | 170,000 | — | 91670A713 | 00000 | ||
| 1 1/2" | 3/4" | 1/2" | Fully Threaded | Coarse | 170,000 | — | 91670A716 | 00000 | ||
| 2" | 3/4" | 1/2" | Fully Threaded | Coarse | 170,000 | — | 91670A720 | 00000 | ||
M4 × 0.7 mm | ||||||||||
| 6 mm | 7 mm | 4 mm | Fully Threaded | Coarse | 170,000 | Class 12.9 | 90605A002 | 00000 | ||
| 8 mm | 7 mm | 4 mm | Fully Threaded | Coarse | 170,000 | Class 12.9 | 90605A003 | 00000 | ||
| 10 mm | 7 mm | 4 mm | Fully Threaded | Coarse | 170,000 | Class 12.9 | 90605A004 | 00000 | ||
| 12 mm | 7 mm | 4 mm | Fully Threaded | Coarse | 170,000 | Class 12.9 | 90605A005 | 00000 | ||
| 16 mm | 7 mm | 4 mm | Fully Threaded | Coarse | 170,000 | Class 12.9 | 90605A007 | 00000 | ||
| 20 mm | 7 mm | 4 mm | Fully Threaded | Coarse | 170,000 | Class 12.9 | 90605A009 | 00000 | ||
M5 × 0.8 mm | ||||||||||
| 12 mm | 8.5 mm | 5 mm | Fully Threaded | Coarse | 170,000 | Class 12.9 | 90605A125 | 00000 | ||
| 16 mm | 8.5 mm | 5 mm | Fully Threaded | Coarse | 170,000 | Class 12.9 | 90605A127 | 00000 | ||
| 20 mm | 8.5 mm | 5 mm | Fully Threaded | Coarse | 170,000 | Class 12.9 | 90605A129 | 00000 | ||
| 25 mm | 8.5 mm | 5 mm | Partially Threaded | Coarse | 170,000 | Class 12.9 | 90605A131 | 0000 | ||
M6 × 1 mm | ||||||||||
| 12 mm | 10 mm | 6 mm | Fully Threaded | Coarse | 170,000 | Class 12.9 | 90605A163 | 00000 | ||
| 16 mm | 10 mm | 6 mm | Fully Threaded | Coarse | 170,000 | Class 12.9 | 90605A164 | 00000 | ||
| 20 mm | 10 mm | 6 mm | Fully Threaded | Coarse | 170,000 | Class 12.9 | 90605A165 | 00000 | ||
| 25 mm | 10 mm | 6 mm | Partially Threaded | Coarse | 170,000 | Class 12.9 | 90605A167 | 00000 | ||
| 30 mm | 10 mm | 6 mm | Partially Threaded | Coarse | 170,000 | Class 12.9 | 90605A169 | 0000 | ||
M8 × 1.25 mm | ||||||||||
| 16 mm | 13 mm | 8 mm | Fully Threaded | Coarse | 170,000 | Class 12.9 | 90605A251 | 00000 | ||
| 20 mm | 13 mm | 8 mm | Fully Threaded | Coarse | 170,000 | Class 12.9 | 90605A252 | 00000 | ||
| 25 mm | 13 mm | 8 mm | Fully Threaded | Coarse | 170,000 | Class 12.9 | 90605A254 | 00000 | ||
| 30 mm | 13 mm | 8 mm | Partially Threaded | Coarse | 170,000 | Class 12.9 | 90605A256 | 00000 | ||
| 35 mm | 13 mm | 8 mm | Partially Threaded | Coarse | 170,000 | Class 12.9 | 90605A257 | 00000 | ||
| 40 mm | 13 mm | 8 mm | Partially Threaded | Coarse | 170,000 | Class 12.9 | 90605A258 | 00000 | ||
M10 × 1.5 mm | ||||||||||
| 20 mm | 16 mm | 10 mm | Fully Threaded | Coarse | 170,000 | Class 12.9 | 90605A302 | 00000 | ||
| 25 mm | 16 mm | 10 mm | Fully Threaded | Coarse | 170,000 | Class 12.9 | 90605A303 | 00000 | ||
| 30 mm | 16 mm | 10 mm | Fully Threaded | Coarse | 170,000 | Class 12.9 | 90605A305 | 00000 | ||
| 35 mm | 16 mm | 10 mm | Partially Threaded | Coarse | 170,000 | Class 12.9 | 90605A307 | 00000 | ||
| 40 mm | 16 mm | 10 mm | Partially Threaded | Coarse | 170,000 | Class 12.9 | 90605A309 | 00000 | ||
M12 × 1.75 mm | ||||||||||
| 25 mm | 18 mm | 12 mm | Fully Threaded | Coarse | 170,000 | Class 12.9 | 90605A336 | 00000 | ||
| 30 mm | 18 mm | 12 mm | Fully Threaded | Coarse | 170,000 | Class 12.9 | 90605A338 | 00000 | ||
| 40 mm | 18 mm | 12 mm | Partially Threaded | Coarse | 170,000 | Class 12.9 | 90605A341 | 00000 | ||
| 50 mm | 18 mm | 12 mm | Partially Threaded | Coarse | 170,000 | Class 12.9 | 90605A342 | 00000 | ||
Screws for Carbide Insert Holders
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When it's time to replace the screws in a carbide insert holder, use the reference number on your holder to find the right size.
Clamp Screw—Threaded on Both Ends
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Clamp screws hold insert clamps at the proper height for tooling.
Thread Lg. | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Clamp Screw Ref. No. | Right-Hand | Left-Hand | Drive Style | Drive Size | Material | Min. Hardness | Thread Fit | Each | |||
10-32 Threads | ||||||||||||
| 0.59" | CS-205 | 0.19" | 0.19" | Hex × Hex | 3/32" | Steel | Rockwell C42 | Unified Standard Class 3A | 91442A210 | 00000 | ||
| 3/4" | CS-220 | 0.25" | 0.25" | Hex × Hex | 3/32" | Steel | Rockwell C42 | Unified Standard Class 3A | 91442A250 | 0000 | ||
| 0.84" | CS-228 | 0.31" | 0.31" | Hex × Hex | 3/32" | Steel | Rockwell C42 | Unified Standard Class 3A | 91442A260 | 0000 | ||
| 7/8" | CS-230 | 0.5" | 0.25" | Hex × Hex | 3/32" | Steel | Rockwell C42 | Unified Standard Class 3A | 91442A270 | 0000 | ||
1/4"-28 Threads | ||||||||||||
| 0.69" | CS-306 | 0.28" | 0.28" | Hex × Hex | 1/8" | Steel | Rockwell C42 | Unified Standard Class 3A | 91442A320 | 0000 | ||
| 0.81" | CS-320 | 0.28" | 0.28" | Hex × Hex | 1/8" | Steel | Rockwell C42 | Unified Standard Class 3A | 91442A360 | 0000 | ||
| 0.81" | CS-321 | 0.28" | 0.28" | Hex × Hex | 3/32" | Steel | Rockwell C42 | Unified Standard Class 3A | 91442A370 | 0000 | ||
| 1" | CS-330 | 0.37" | 0.37" | Hex × Hex | 1/8" | Steel | Rockwell C42 | Unified Standard Class 3A | 91442A390 | 0000 | ||
| 1.16" | CS-335 | 0.45" | 0.45" | Hex × Hex | 1/8" | Steel | Rockwell C42 | Unified Standard Class 3A | 91442A400 | 0000 | ||
1/4"-32 Threads | ||||||||||||
| 0.564" | CS-304 | 0.221" | 0.221" | Hex | 1/8" | Steel | Rockwell C42 | Unified Standard Class 3A | 91442A310 | 0000 | ||
5/16"-24 Threads | ||||||||||||
| 1" | CS-410 | 0.25" | 0.5" | Hex × Hex | 5/32" | Steel | Rockwell C42 | Unified Standard Class 3A | 91442A410 | 0000 | ||
| 1.12" | CS-420 | 0.41" | 0.47" | Hex × Hex | 5/32" | Steel | Rockwell C42 | Unified Standard Class 3A | 91442A440 | 0000 | ||
| 1.156" | CS-425 | 0.406" | 0.5" | Hex × Hex | 5/32" | Steel | Rockwell C42 | Unified Standard Class 3A | 91442A450 | 0000 | ||
| 1 1/4" | CS-430 | 0.5" | 0.5" | Hex × Hex | 5/32" | Steel | Rockwell C42 | Unified Standard Class 3A | 91442A460 | 0000 | ||
5/16"-32 Threads | ||||||||||||
| 1 1/4" | CS-416 | 0.375" | 0.375" | Hex | 5/32" | Steel | Rockwell C42 | Unified Standard Class 3A | 91442A430 | 0000 | ||
Left-Hand-Thread Stainless Steel Button Head Hex-Drive Screws
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No more righty tighty. Turn these screws to the left to tighten them. Unlike other screws, they won't come loose during counterclockwise motions on reverse motors, grinders, and fans. Made of stainless steel, they won't rust or corrode when exposed to moisture and chemicals. 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 | Certificate Type | Pkg. Qty. | Pkg. | |||
18-8 Stainless Steel | ||||||||||
4-40 | ||||||||||
| 1/4" | 0.213" | 0.059" | Fully Threaded | 80,000 | — | 5 | 95955A223 | 00000 | ||
| 3/8" | 0.213" | 0.059" | Fully Threaded | 80,000 | — | 5 | 95955A226 | 0000 | ||
| 1/2" | 0.213" | 0.059" | Fully Threaded | 80,000 | Material Certificate | 5 | 95955A229 | 0000 | ||
| 3/4" | 0.213" | 0.059" | Fully Threaded | 80,000 | Material Certificate | 5 | 95955A232 | 00000 | ||
6-32 | ||||||||||
| 3/8" | 0.262" | 0.073" | Fully Threaded | 80,000 | — | 5 | 95955A245 | 0000 | ||
| 1/2" | 0.262" | 0.073" | Fully Threaded | 80,000 | — | 5 | 95955A248 | 0000 | ||
| 3/4" | 0.262" | 0.073" | Fully Threaded | 80,000 | — | 5 | 95955A251 | 0000 | ||
| 1" | 0.262" | 0.073" | Fully Threaded | 80,000 | — | 5 | 95955A254 | 00000 | ||
8-32 | ||||||||||
| 3/8" | 0.312" | 0.087" | Fully Threaded | 80,000 | — | 5 | 95955A267 | 0000 | ||
| 1/2" | 0.312" | 0.087" | Fully Threaded | 80,000 | — | 5 | 95955A270 | 0000 | ||
| 3/4" | 0.312" | 0.087" | Fully Threaded | 80,000 | — | 5 | 95955A273 | 00000 | ||
| 1" | 0.312" | 0.087" | Fully Threaded | 80,000 | — | 5 | 95955A276 | 00000 | ||
10-32 | ||||||||||
| 3/8" | 0.361" | 0.101" | Fully Threaded | 80,000 | Material Certificate | 5 | 95955A289 | 0000 | ||
| 1/2" | 0.361" | 0.101" | Fully Threaded | 80,000 | — | 5 | 95955A292 | 00000 | ||
| 3/4" | 0.361" | 0.101" | Fully Threaded | 80,000 | — | 5 | 95955A295 | 00000 | ||
| 1" | 0.361" | 0.101" | Fully Threaded | 80,000 | — | 5 | 95955A298 | 00000 | ||
1/4"-20 | ||||||||||
| 3/8" | 0.437" | 0.132" | Fully Threaded | 80,000 | Material Certificate | 5 | 95955A301 | 00000 | ||
| 1/2" | 0.437" | 0.132" | Fully Threaded | 80,000 | — | 5 | 95955A304 | 00000 | ||
| 3/4" | 0.437" | 0.132" | Fully Threaded | 80,000 | — | 5 | 95955A307 | 00000 | ||
| 1" | 0.437" | 0.132" | Fully Threaded | 80,000 | — | 5 | 95955A310 | 00000 | ||
M3 × 0.5 mm | ||||||||||
| 6 mm | 5.7 mm | 1.65 mm | Fully Threaded | 80,000 | — | 5 | 95942A111 | 0000 | ||
| 8 mm | 5.7 mm | 1.65 mm | Fully Threaded | 80,000 | — | 5 | 95942A112 | 0000 | ||
| 10 mm | 5.7 mm | 1.65 mm | Fully Threaded | 80,000 | — | 5 | 95942A113 | 0000 | ||
| 12 mm | 5.7 mm | 1.65 mm | Fully Threaded | 80,000 | Material Certificate | 5 | 95942A114 | 00000 | ||
M4 × 0.7 mm | ||||||||||
| 8 mm | 7.6 mm | 2.2 mm | Fully Threaded | 80,000 | — | 5 | 95942A115 | 0000 | ||
| 10 mm | 7.6 mm | 2.2 mm | Fully Threaded | 80,000 | Material Certificate | 5 | 95942A116 | 00000 | ||
| 12 mm | 7.6 mm | 2.2 mm | Fully Threaded | 80,000 | — | 5 | 95942A117 | 00000 | ||
| 16 mm | 7.6 mm | 2.2 mm | Fully Threaded | 80,000 | — | 5 | 95942A118 | 00000 | ||
M5 × 0.8 mm | ||||||||||
| 10 mm | 9.5 mm | 2.75 mm | Fully Threaded | 80,000 | — | 5 | 95942A119 | 0000 | ||
| 12 mm | 9.5 mm | 2.75 mm | Fully Threaded | 80,000 | — | 5 | 95942A121 | 00000 | ||
| 16 mm | 9.5 mm | 2.75 mm | Fully Threaded | 80,000 | — | 5 | 95942A122 | 00000 | ||
| 20 mm | 9.5 mm | 2.75 mm | Fully Threaded | 80,000 | — | 5 | 95942A123 | 00000 | ||
M6 × 1 mm | ||||||||||
| 10 mm | 10.5 mm | 3.3 mm | Fully Threaded | 80,000 | Material Certificate | 5 | 95942A124 | 00000 | ||
| 12 mm | 10.5 mm | 3.3 mm | Fully Threaded | 80,000 | — | 5 | 95942A125 | 00000 | ||
| 16 mm | 10.5 mm | 3.3 mm | Fully Threaded | 80,000 | — | 5 | 95942A126 | 00000 | ||
| 20 mm | 10.5 mm | 3.3 mm | Fully Threaded | 80,000 | — | 5 | 95942A127 | 00000 | ||
Left-Hand-Thread Stainless Steel Socket Head Screws
 |
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Lg. | Dia. | Ht. | Threading | Thread Spacing | Tensile Strength, psi | Each | |||
18-8 Stainless Steel | |||||||||
8-32 | |||||||||
| 3/8" | 0.27" | 0.164" | Fully Threaded | Coarse | 70,000 | 92202A150 | 000000 | ||
| 1/2" | 0.27" | 0.164" | Fully Threaded | Coarse | 70,000 | 92202A155 | 00000 | ||
| 3/4" | 0.27" | 0.164" | Fully Threaded | Coarse | 70,000 | 92202A160 | 00000 | ||
10-32 | |||||||||
| 1/2" | 5/16" | 0.19" | Fully Threaded | Fine | 70,000 | 92202A255 | 00000 | ||
| 3/4" | 5/16" | 0.19" | Fully Threaded | Fine | 70,000 | 92202A260 | 00000 | ||
| 1" | 5/16" | 0.19" | Fully Threaded | Fine | 70,000 | 92202A265 | 00000 | ||
1/4"-20 | |||||||||
| 1/2" | 3/8" | 1/4" | Fully Threaded | Coarse | 70,000 | 92202A315 | 00000 | ||
| 5/8" | 3/8" | 1/4" | Fully Threaded | Coarse | 70,000 | 92202A317 | 00000 | ||
| 3/4" | 3/8" | 1/4" | Fully Threaded | Coarse | 70,000 | 92202A318 | 00000 | ||
| 1" | 3/8" | 1/4" | Fully Threaded | Coarse | 70,000 | 92202A321 | 00000 | ||
| 1 1/4" | 3/8" | 1/4" | Fully Threaded | Coarse | 70,000 | 92202A324 | 00000 | ||
| 1 1/2" | 3/8" | 1/4" | Fully Threaded | Coarse | 70,000 | 92202A327 | 00000 | ||
| 2" | 3/8" | 1/4" | Fully Threaded | Coarse | 70,000 | 92202A331 | 00000 | ||
Left-Hand-Thread Stainless Steel Hex-Drive Flat Head Screws
 |
No more righty tighty—tighten these screws by turning them to the left. Unlike other screws, they won't come loose during counterclockwise motions on reverse motors, grinders, and fans. Made of stainless steel, they won't rust or corrode when exposed to moisture and chemicals. 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 | Certificate Type | Pkg. Qty. | Pkg. | |||
18-8 Stainless Steel | ||||||||||||
4-40 | ||||||||||||
| 1/4" | 82° | Standard | 0.255" | 0.083" | Fully Threaded | 70,000 | Material Certificate | 5 | 91512A110 | 00000 | ||
| 1/2" | 82° | Standard | 0.255" | 0.083" | Fully Threaded | 70,000 | — | 5 | 91512A120 | 00000 | ||
6-32 | ||||||||||||
| 1/4" | 82° | Standard | 0.307" | 0.097" | Fully Threaded | 70,000 | — | 5 | 91512A130 | 0000 | ||
| 1/2" | 82° | Standard | 0.307" | 0.097" | Fully Threaded | 70,000 | — | 5 | 91512A140 | 0000 | ||
8-32 | ||||||||||||
| 1/2" | 82° | Standard | 0.359" | 0.112" | Fully Threaded | 70,000 | — | 5 | 91512A150 | 00000 | ||
| 3/4" | 82° | Standard | 0.359" | 0.112" | Fully Threaded | 70,000 | — | 5 | 91512A160 | 00000 | ||
10-32 | ||||||||||||
| 1/2" | 82° | Standard | 0.411" | 0.127" | Fully Threaded | 70,000 | — | 1 | 91512A170 | 0000 | ||
| 3/4" | 82° | Standard | 0.411" | 0.127" | Fully Threaded | 70,000 | — | 1 | 91512A180 | 0000 | ||
1/4"-20 | ||||||||||||
| 1/2" | 82° | Standard | 0.531" | 0.161" | Fully Threaded | 70,000 | — | 1 | 91512A190 | 0000 | ||
| 1" | 82° | Standard | 0.531" | 0.161" | Fully Threaded | 70,000 | Material Certificate | 1 | 91512A210 | 0000 | ||
M3 × 0.5 mm | ||||||||||||
| 6 mm | 90° | Standard | 6.00 mm | 1.70 mm | Fully Threaded | 70,000 | Material Certificate | 5 | 91518A110 | 0000 | ||
| 10 mm | 90° | Standard | 6.00 mm | 1.70 mm | Fully Threaded | 70,000 | — | 5 | 91518A120 | 00000 | ||
M4 × 0.7 mm | ||||||||||||
| 8 mm | 90° | Standard | 8.00 mm | 2.30 mm | Fully Threaded | 70,000 | — | 5 | 91518A130 | 00000 | ||
| 12 mm | 90° | Standard | 8.00 mm | 2.30 mm | Fully Threaded | 70,000 | — | 5 | 91518A140 | 00000 | ||
M5 × 0.8 mm | ||||||||||||
| 10 mm | 90° | Standard | 10.00 mm | 2.80 mm | Fully Threaded | 70,000 | — | 1 | 91518A150 | 0000 | ||
| 16 mm | 90° | Standard | 10.00 mm | 2.80 mm | Fully Threaded | 70,000 | — | 1 | 91518A160 | 0000 | ||
M6 × 1 mm | ||||||||||||
| 12 mm | 90° | Standard | 12.00 mm | 3.30 mm | Fully Threaded | 70,000 | Material Certificate | 1 | 91518A170 | 0000 | ||
| 20 mm | 90° | Standard | 12.00 mm | 3.30 mm | Fully Threaded | 70,000 | — | 1 | 91518A180 | 0000 | ||
M8 × 1.25 mm | ||||||||||||
| 16 mm | 90° | Standard | 16.00 mm | 4.40 mm | Fully Threaded | 70,000 | — | 1 | 91518A190 | 0000 | ||
| 25 mm | 90° | Standard | 16.00 mm | 4.40 mm | Fully Threaded | 70,000 | Material Certificate | 1 | 91518A210 | 0000 | ||
Left-Hand-Thread Stainless Steel Hex-Drive Shoulder Screws
 |
Turn left to tighten these screws. You read that right. Unlike other shoulder screws, they won't come loose during counterclockwise rotation.
18-8 Stainless Steel—The choice for wet and outdoor environments, these screws won't rust. However, they won't hold up to the harsh chemicals that 316 stainless steel can.
Head | Certificate | Each | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Shoulder Lg. | Thread Size | Thread Lg. | Dia. | Ht. | Drive Size | Tensile Strength, psi | Type | Form | 1-4 | 5-Up | |||
18-8 Stainless Steel | |||||||||||||
1/8" Diameter Shoulder (-0.004" to -0.002" Tolerance) | |||||||||||||
| 1/8" | 4-40 | 5/32" | 1/4" | 1/8" | 5/64" | 70,000 | — | — | 90324A005 | 00000 | 00000 | ||
| 3/16" | 4-40 | 5/32" | 1/4" | 1/8" | 5/64" | 70,000 | Material Certificate | Digital | 90324A008 | 0000 | 0000 | ||
| 1/4" | 4-40 | 5/32" | 1/4" | 1/8" | 5/64" | 70,000 | — | — | 90324A012 | 0000 | 0000 | ||
| 3/8" | 4-40 | 5/32" | 1/4" | 1/8" | 5/64" | 70,000 | — | — | 90324A016 | 0000 | 0000 | ||
| 1/2" | 4-40 | 5/32" | 1/4" | 1/8" | 5/64" | 70,000 | — | — | 90324A020 | 0000 | 0000 | ||
5/32" Diameter Shoulder (-0.004" to -0.002" Tolerance) | |||||||||||||
| 1/8" | 6-32 | 3/16" | 9/32" | 1/8" | 3/32" | 70,000 | — | — | 90324A026 | 0000 | 0000 | ||
| 3/16" | 6-32 | 3/16" | 9/32" | 1/8" | 3/32" | 70,000 | — | — | 90324A030 | 0000 | 0000 | ||
| 1/4" | 6-32 | 3/16" | 9/32" | 1/8" | 3/32" | 70,000 | — | — | 90324A034 | 0000 | 0000 | ||
| 3/8" | 6-32 | 3/16" | 9/32" | 1/8" | 3/32" | 70,000 | Material Certificate | Digital | 90324A038 | 0000 | 0000 | ||
| 1/2" | 6-32 | 3/16" | 9/32" | 1/8" | 3/32" | 70,000 | — | — | 90324A042 | 0000 | 0000 | ||
3/16" Diameter Shoulder (-0.004" to -0.002" Tolerance) | |||||||||||||
| 1/8" | 8-32 | 3/16" | 5/16" | 5/32" | 3/32" | 70,000 | Material Certificate | Digital | 90324A048 | 0000 | 0000 | ||
| 3/16" | 8-32 | 3/16" | 5/16" | 5/32" | 3/32" | 70,000 | — | — | 90324A052 | 0000 | 0000 | ||
| 1/4" | 8-32 | 3/16" | 5/16" | 5/32" | 3/32" | 70,000 | — | — | 90324A056 | 0000 | 0000 | ||
| 3/8" | 8-32 | 3/16" | 5/16" | 5/32" | 3/32" | 70,000 | — | — | 90324A060 | 0000 | 0000 | ||
| 1/2" | 8-32 | 3/16" | 5/16" | 5/32" | 3/32" | 70,000 | Material Certificate | Digital | 90324A064 | 0000 | 0000 | ||
| 3/4" | 8-32 | 3/16" | 5/16" | 5/32" | 3/32" | 70,000 | Material Certificate | Digital | 90324A068 | 0000 | 0000 | ||
| 1" | 8-32 | 3/16" | 5/16" | 5/32" | 3/32" | 70,000 | — | — | 90324A072 | 0000 | 0000 | ||
1/4" Diameter Shoulder (-0.004" to -0.002" Tolerance) | |||||||||||||
| 1/4" | 10-24 | 3/8" | 3/8" | 3/16" | 1/8" | 70,000 | — | — | 90324A078 | 0000 | 0000 | ||
| 3/8" | 10-24 | 3/8" | 3/8" | 3/16" | 1/8" | 70,000 | Material Certificate | Digital | 90324A082 | 0000 | 0000 | ||
| 1/2" | 10-24 | 3/8" | 3/8" | 3/16" | 1/8" | 70,000 | Material Certificate | Digital | 90324A086 | 0000 | 0000 | ||
| 5/8" | 10-24 | 3/8" | 3/8" | 3/16" | 1/8" | 70,000 | — | — | 90324A090 | 0000 | 0000 | ||
| 3/4" | 10-24 | 3/8" | 3/8" | 3/16" | 1/8" | 70,000 | — | — | 90324A094 | 0000 | 0000 | ||
| 1" | 10-24 | 3/8" | 3/8" | 3/16" | 1/8" | 70,000 | Material Certificate | Digital | 90324A098 | 0000 | 0000 | ||
5/16" Diameter Shoulder (-0.004" to -0.002" Tolerance) | |||||||||||||
| 1/4" | 1/4"-20 | 7/16" | 7/16" | 7/32" | 5/32" | 70,000 | — | — | 90324A102 | 0000 | 0000 | ||
| 3/8" | 1/4"-20 | 7/16" | 7/16" | 7/32" | 5/32" | 70,000 | — | — | 90324A106 | 0000 | 0000 | ||
| 1/2" | 1/4"-20 | 7/16" | 7/16" | 7/32" | 5/32" | 70,000 | — | — | 90324A110 | 0000 | 0000 | ||
| 5/8" | 1/4"-20 | 7/16" | 7/16" | 7/32" | 5/32" | 70,000 | — | — | 90324A114 | 0000 | 0000 | ||
| 3/4" | 1/4"-20 | 7/16" | 7/16" | 7/32" | 5/32" | 70,000 | — | — | 90324A118 | 0000 | 0000 | ||
| 1" | 1/4"-20 | 7/16" | 7/16" | 7/32" | 5/32" | 70,000 | Material Certificate | Digital | 90324A122 | 0000 | 0000 | ||
3/8" Diameter Shoulder (-0.004" to -0.002" Tolerance) | |||||||||||||
| 1/2" | 5/16"-18 | 1/2" | 9/16" | 1/4" | 3/16" | 70,000 | — | — | 90324A128 | 0000 | 0000 | ||
| 3/4" | 5/16"-18 | 1/2" | 9/16" | 1/4" | 3/16" | 70,000 | Material Certificate | Digital | 90324A132 | 0000 | 0000 | ||
| 1" | 5/16"-18 | 1/2" | 9/16" | 1/4" | 3/16" | 70,000 | — | — | 90324A136 | 0000 | 0000 | ||
| 1 1/2" | 5/16"-18 | 1/2" | 9/16" | 1/4" | 3/16" | 70,000 | Material Certificate | Digital | 90324A140 | 0000 | 0000 | ||
| 2" | 5/16"-18 | 1/2" | 9/16" | 1/4" | 3/16" | 70,000 | Material Certificate | Digital | 90324A144 | 0000 | 0000 | ||
1/2" Diameter Shoulder (-0.004" to -0.002" Tolerance) | |||||||||||||
| 1/2" | 3/8"-16 | 5/8" | 3/4" | 5/16" | 1/4" | 70,000 | — | — | 90324A152 | 0000 | 0000 | ||
| 3/4" | 3/8"-16 | 5/8" | 3/4" | 5/16" | 1/4" | 70,000 | — | — | 90324A156 | 0000 | 0000 | ||
| 1" | 3/8"-16 | 5/8" | 3/4" | 5/16" | 1/4" | 70,000 | Material Certificate | Digital | 90324A160 | 0000 | 0000 | ||
| 1 1/2" | 3/8"-16 | 5/8" | 3/4" | 5/16" | 1/4" | 70,000 | — | — | 90324A164 | 0000 | 0000 | ||
| 2" | 3/8"-16 | 5/8" | 3/4" | 5/16" | 1/4" | 70,000 | — | — | 90324A168 | 00000 | 0000 | ||
 |
Shoulder Shortening |
 |
Shoulder Lengthening |
 |
Shoulder Shortening | Shoulder Lengthening | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Thk. | For Screw Size | Pkg. Qty. | Pkg. | For Screw Size | Pkg. Qty. | Pkg. | ||||
18-8 Stainless Steel | ||||||||||
For 1/8" Diameter Shoulder | ||||||||||
| 0.005" | No. 4 | 10 | 94773A606 | 00000 | — | — | ——— | 0 | ||
| 0.01" | No. 4 | 10 | 94773A647 | 0000 | — | — | ——— | 0 | ||
| 0.016" | No. 4 | 10 | 94773A679 | 0000 | — | — | ——— | 0 | ||
| 0.02" | No. 4 | 10 | 94773A706 | 0000 | — | — | ——— | 0 | ||
| 0.03" | No. 4 | 10 | 94773A737 | 0000 | — | — | ——— | 0 | ||
| 0.06" | No. 4 | 5 | 94773A766 | 0000 | — | — | ——— | 0 | ||
For 3/16" Diameter Shoulder | ||||||||||
| 0.005" | No. 8 | 10 | 94773A608 | 0000 | No. 8 | 10 | 90135A432 | 000000 | ||
| 0.01" | No. 8 | 10 | 94773A649 | 0000 | — | — | ——— | 0 | ||
| 0.016" | No. 8 | 10 | 94773A681 | 0000 | — | — | ——— | 0 | ||
| 0.02" | No. 8 | 10 | 94773A708 | 0000 | — | — | ——— | 0 | ||
| 0.03" | No. 8 | 10 | 94773A739 | 0000 | — | — | ——— | 0 | ||
| 0.06" | No. 8 | 5 | 94773A768 | 0000 | — | — | ——— | 0 | ||
For 1/4" Diameter Shoulder | ||||||||||
| 0.005" | No. 10 | 50 | 94773A610 | 0000 | No. 10 | 50 | 90135A431 | 00000 | ||
| 0.01" | No. 10 | 100 | 94773A651 | 00000 | — | — | ——— | 0 | ||
| 0.016" | No. 10 | 50 | 94773A683 | 00000 | No. 10 | 50 | 90135A443 | 00000 | ||
| 0.02" | No. 10 | 50 | 94773A710 | 00000 | — | — | ——— | 0 | ||
| 0.03" | No. 10 | 50 | 94773A741 | 00000 | No. 10 | 25 | 90135A455 | 0000 | ||
| 0.06" | No. 10 | 25 | 94773A770 | 0000 | — | — | ——— | 0 | ||
For 5/16" Diameter Shoulder | ||||||||||
| 0.005" | 1/4" | 50 | 94773A612 | 0000 | 1/4" | 50 | 90135A433 | 00000 | ||
| 0.01" | 1/4" | 25 | 94773A653 | 0000 | — | — | ——— | 0 | ||
| 0.016" | 1/4" | 25 | 94773A686 | 0000 | 1/4" | 25 | 90135A445 | 0000 | ||
| 0.02" | 1/4" | 25 | 94773A712 | 0000 | — | — | ——— | 0 | ||
| 0.03" | 1/4" | 100 | 94773A743 | 00000 | 1/4" | 25 | 90135A457 | 00000 | ||
| 0.06" | 1/4" | 25 | 94773A772 | 0000 | — | — | ——— | 0 | ||
For 3/8" Diameter Shoulder | ||||||||||
| 0.005" | 5/16" | 25 | 94773A614 | 0000 | 5/16" | 50 | 90135A435 | 00000 | ||
| 0.01" | 5/16" | 25 | 94773A655 | 00000 | — | — | ——— | 0 | ||
| 0.016" | 5/16" | 25 | 94773A688 | 00000 | 5/16" | 25 | 90135A447 | 00000 | ||
| 0.02" | 5/16" | 25 | 94773A714 | 0000 | — | — | ——— | 0 | ||
| 0.03" | 5/16" | 50 | 94773A745 | 00000 | 5/16" | 25 | 90135A459 | 00000 | ||
| 0.06" | 5/16" | 25 | 94773A774 | 0000 | — | — | ——— | 0 | ||
For 1/2" Diameter Shoulder | ||||||||||
| 0.005" | 3/8" | 25 | 94773A616 | 0000 | 3/8" | 25 | 90135A437 | 00000 | ||
| 0.01" | 3/8" | 25 | 94773A657 | 00000 | — | — | ——— | 0 | ||
| 0.016" | 3/8" | 25 | 94773A689 | 00000 | 3/8" | 25 | 90135A449 | 00000 | ||
| 0.02" | 3/8" | 25 | 94773A716 | 00000 | — | — | ——— | 0 | ||
| 0.03" | 3/8" | 50 | 94773A747 | 00000 | 3/8" | 25 | 90135A461 | 00000 | ||
| 0.06" | 3/8" | 25 | 94773A776 | 0000 | — | — | ——— | 0 | ||
