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About Hex Head Screws and Bolts
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Choose a hex head fastener with the right threading, thread size, material, and strength for your equipment.
JIS High-Strength Steel Flanged Hex Head Screws
Fully Threaded
Partially Threaded
Made to Japanese Industrial Standards, these Class 10.9 steel screws can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. They are at least 25% stronger than medium-strength steel screws. The flange distributes pressure where the screw meets the surface, eliminating the need for a separate washer. Head height includes the flange. Length is measured from under the flange.
Zinc-plated and zinc yellow-chromate plated screws resist corrosion in wet environments. They’re a good choice for most applications.
Black-oxide screws have a dark, matte coating for a finished look. They offer minimal corrosion resistance, so they’re best for dry environments.
Match the thread spacing of mating components. Coarse threads are the industry standard; choose these screws if you don’t know the pitch. Fine and extra-fine threads are closely spaced to prevent loosening from vibration; the finer the thread, the better the resistance.
Head, mm | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg., mm | Threading | Min. Thread Lg., mm | Thread Spacing  | Wd. | Ht. | Flange Dia., mm | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc-Plated Class 10.9 Steel | |||||||||||
M5 × 0.8 mm | |||||||||||
| 8 | Fully Threaded | __ | Coarse | 8 | 5 | 12 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A511 | 000000 |
| 10 | Fully Threaded | __ | Coarse | 8 | 5 | 12 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A512 | 00000 |
| 12 | Fully Threaded | __ | Coarse | 8 | 5 | 12 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A513 | 00000 |
| 14 | Fully Threaded | __ | Coarse | 8 | 5 | 12 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A131 | 00000 |
| 16 | Fully Threaded | __ | Coarse | 8 | 5 | 12 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A514 | 00000 |
| 20 | Fully Threaded | __ | Coarse | 8 | 5 | 12 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A515 | 00000 |
| 25 | Fully Threaded | __ | Coarse | 8 | 5 | 12 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A516 | 00000 |
| 30 | Fully Threaded | __ | Coarse | 8 | 5 | 12 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A517 | 00000 |
| 40 | Fully Threaded | __ | Coarse | 8 | 5 | 12 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A518 | 00000 |
M6 × 1 mm | |||||||||||
| 10 | Fully Threaded | __ | Coarse | 10 | 6 | 14 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A123 | 0000 |
| 12 | Fully Threaded | __ | Coarse | 10 | 6 | 14 | 150,000 | JIS B 1189 Type 2 | 50 | 95735A212 | 0000 |
| 14 | Fully Threaded | __ | Coarse | 10 | 6 | 14 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A124 | 00000 |
| 16 | Fully Threaded | __ | Coarse | 10 | 6 | 14 | 150,000 | JIS B 1189 Type 2 | 50 | 95735A216 | 0000 |
| 20 | Fully Threaded | __ | Coarse | 10 | 6 | 14 | 150,000 | JIS B 1189 Type 2 | 50 | 95735A221 | 0000 |
| 25 | Fully Threaded | __ | Coarse | 10 | 6 | 14 | 150,000 | JIS B 1189 Type 2 | 50 | 95735A225 | 00000 |
| 30 | Partially Threaded | __ | Coarse | 10 | 6 | 14 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A132 | 00000 |
| 30 | Partially Threaded | 18 | Coarse | 10 | 6 | 14 | 150,000 | JIS B 1189 Type 2 | 50 | 95735A231 | 00000 |
| 35 | Partially Threaded | 18 | Coarse | 10 | 6 | 14 | 150,000 | JIS B 1189 Type 2 | 50 | 95735A235 | 00000 |
| 40 | Partially Threaded | 18 | Coarse | 10 | 6 | 14 | 150,000 | JIS B 1189 Type 2 | 50 | 95735A241 | 00000 |
M8 × 1.25 mm | |||||||||||
| 10 | Fully Threaded | __ | Coarse | 12 | 8 | 17.5 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A125 | 00000 |
| 12 | Fully Threaded | __ | Coarse | 12 | 8 | 17.5 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A412 | 0000 |
| 14 | Fully Threaded | __ | Coarse | 12 | 8 | 17.5 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A126 | 00000 |
| 16 | Fully Threaded | __ | Coarse | 12 | 8 | 17.5 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A416 | 0000 |
| 18 | Fully Threaded | __ | Coarse | 12 | 8 | 17.5 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A127 | 00000 |
| 20 | Fully Threaded | __ | Coarse | 12 | 8 | 17.5 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A421 | 0000 |
| 25 | Fully Threaded | __ | Coarse | 12 | 8 | 17.5 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A425 | 00000 |
| 30 | Fully Threaded | __ | Coarse | 12 | 8 | 17.5 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A431 | 00000 |
| 35 | Partially Threaded | 22 | Coarse | 12 | 8 | 17.5 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A435 | 00000 |
| 40 | Partially Threaded | 22 | Coarse | 12 | 8 | 17.5 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A441 | 00000 |
| 45 | Partially Threaded | 22 | Coarse | 12 | 8 | 17.5 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A445 | 00000 |
| 50 | Partially Threaded | 22 | Coarse | 12 | 8 | 17.5 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A451 | 00000 |
| 60 | Partially Threaded | 22 | Coarse | 12 | 8 | 17.5 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A461 | 00000 |
| 65 | Partially Threaded | 24 | Coarse | 12 | 8 | 17.5 | 150,000 | JIS B 1189 Type 2 | 5 | 95735A128 | 00000 |
| 70 | Partially Threaded | 24 | Coarse | 12 | 8 | 17.5 | 150,000 | JIS B 1189 Type 2 | 5 | 95735A129 | 00000 |
M10 × 1.25 mm | |||||||||||
| 16 | Fully Threaded | __ | Fine | 14 | 10 | 21 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A616 | 00000 |
| 20 | Fully Threaded | __ | Fine | 14 | 10 | 21 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A621 | 00000 |
| 25 | Fully Threaded | __ | Fine | 14 | 10 | 21 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A625 | 00000 |
| 30 | Fully Threaded | __ | Fine | 14 | 10 | 21 | 150,000 | JIS B 1189 Type 2 | 10 | 95735A631 | 0000 |
| 35 | Fully Threaded | __ | Fine | 14 | 10 | 21 | 150,000 | JIS B 1189 Type 2 | 10 | 95735A635 | 0000 |
| 40 | Partially Threaded | 26 | Fine | 14 | 10 | 21 | 150,000 | JIS B 1189 Type 2 | 10 | 95735A641 | 0000 |
| 45 | Partially Threaded | 26 | Fine | 14 | 10 | 21 | 150,000 | JIS B 1189 Type 2 | 10 | 95735A645 | 0000 |
| 50 | Partially Threaded | 26 | Fine | 14 | 10 | 21 | 150,000 | JIS B 1189 Type 2 | 10 | 95735A651 | 0000 |
| 60 | Partially Threaded | 26 | Fine | 14 | 10 | 21 | 150,000 | JIS B 1189 Type 2 | 10 | 95735A661 | 00000 |
| 70 | Partially Threaded | 26 | Fine | 14 | 10 | 21 | 150,000 | JIS B 1189 Type 2 | 10 | 95735A671 | 00000 |
| 80 | Partially Threaded | 26 | Fine | 14 | 10 | 21 | 150,000 | JIS B 1189 Type 2 | 10 | 95735A111 | 00000 |
| 90 | Partially Threaded | 26 | Fine | 14 | 10 | 21 | 150,000 | JIS B 1189 Type 2 | 10 | 95735A112 | 00000 |
| 100 | Partially Threaded | 26 | Fine | 14 | 10 | 21 | 150,000 | JIS B 1189 Type 2 | 10 | 95735A113 | 00000 |
M12 × 1.25 mm | |||||||||||
| 20 | Fully Threaded | __ | Extra Fine | 17 | 11.5 | 25 | 150,000 | JIS B 1189 Type 2 | 10 | 95735A114 | 0000 |
| 25 | Fully Threaded | __ | Extra Fine | 17 | 11.5 | 25 | 150,000 | JIS B 1189 Type 2 | 10 | 95735A115 | 0000 |
| 30 | Fully Threaded | __ | Extra Fine | 17 | 11.5 | 25 | 150,000 | JIS B 1189 Type 2 | 10 | 95735A116 | 00000 |
| 35 | Fully Threaded | __ | Extra Fine | 17 | 11.5 | 25 | 150,000 | JIS B 1189 Type 2 | 10 | 95735A117 | 00000 |
| 40 | Partially Threaded | 30 | Extra Fine | 17 | 11.5 | 25 | 150,000 | JIS B 1189 Type 2 | 10 | 95735A118 | 00000 |
| 45 | Partially Threaded | 30 | Extra Fine | 17 | 11.5 | 25 | 150,000 | JIS B 1189 Type 2 | 10 | 95735A119 | 00000 |
| 50 | Partially Threaded | 30 | Extra Fine | 17 | 11.5 | 25 | 150,000 | JIS B 1189 Type 2 | 10 | 95735A121 | 00000 |
| 55 | Partially Threaded | 30 | Extra Fine | 17 | 11.5 | 25 | 150,000 | JIS B 1189 Type 2 | 10 | 95735A122 | 00000 |
Zinc Yellow-Chromate Plated Class 10.9 Steel | |||||||||||
M5 × 0.8 mm | |||||||||||
| 8 | Fully Threaded | __ | Coarse | 8 | 5 | 12 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A191 | 00000 |
| 10 | Fully Threaded | __ | Coarse | 8 | 5 | 12 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A192 | 00000 |
| 12 | Fully Threaded | __ | Coarse | 8 | 5 | 12 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A193 | 00000 |
| 14 | Fully Threaded | __ | Coarse | 8 | 5 | 12 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A194 | 00000 |
| 16 | Fully Threaded | __ | Coarse | 8 | 5 | 12 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A195 | 00000 |
| 20 | Fully Threaded | __ | Coarse | 8 | 5 | 12 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A196 | 00000 |
| 25 | Fully Threaded | __ | Coarse | 8 | 5 | 12 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A197 | 00000 |
| 30 | Fully Threaded | __ | Coarse | 8 | 5 | 12 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A198 | 00000 |
| 40 | Fully Threaded | __ | Coarse | 8 | 5 | 12 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A199 | 00000 |
M6 × 1 mm | |||||||||||
| 10 | Fully Threaded | __ | Coarse | 10 | 6 | 14 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A251 | 00000 |
| 12 | Fully Threaded | __ | Coarse | 10 | 6 | 14 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A252 | 00000 |
| 14 | Fully Threaded | __ | Coarse | 10 | 6 | 14 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A253 | 00000 |
| 16 | Fully Threaded | __ | Coarse | 10 | 6 | 14 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A254 | 00000 |
| 20 | Fully Threaded | __ | Coarse | 10 | 6 | 14 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A255 | 00000 |
| 25 | Fully Threaded | __ | Coarse | 10 | 6 | 14 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A256 | 00000 |
| 30 | Partially Threaded | __ | Coarse | 10 | 6 | 14 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A257 | 00000 |
| 35 | Partially Threaded | 23 | Coarse | 10 | 6 | 14 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A258 | 00000 |
| 40 | Partially Threaded | 23 | Coarse | 10 | 6 | 14 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A259 | 00000 |
| 45 | Partially Threaded | 20 | Coarse | 10 | 6 | 14 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A261 | 00000 |
| 50 | Partially Threaded | 20 | Coarse | 10 | 6 | 14 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A262 | 00000 |
M8 × 1.25 mm | |||||||||||
| 10 | Fully Threaded | __ | Coarse | 12 | 8 | 17.5 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A263 | 00000 |
| 12 | Fully Threaded | __ | Coarse | 12 | 8 | 17.5 | 150,000 | JIS B 1189 Type 2 | 25 | 95735A264 | 00000 |