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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.
Tight-Spot Hex Head Screws
Installed View
A high-strength alternative to blind rivets, use these screws when only one side of the material is accessible. To install, hold the washer in place with a wrench, and then use a hex socket to turn the screw. When the screw is tightened, the attached nut expands the sleeve to create a strong clamping force on the back of the material. Dimensions meet ISO 4017 (formerly DIN 933) specifications. Length is measured from under the head.
Head, mm | Washer | Sleeve | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Material Thick. | For Hole Size | Drill Bit Size | Lg. | Threading | Thread Spacing  | Wd. | Ht. | O-Ring Material | OD | Wd. | Thick. | OD | Lg. | Tensile Strength, psi | Shear Strength | Specifications Met | Each | |
Zinc-Plated Class 8.8 Steel | ||||||||||||||||||
M16 × 2 mm | ||||||||||||||||||
| 1/2"-1 1/8" | 1 1/16" | 1 1/16" | 2 5/8" | Fully Threaded | Coarse | 24 | 10 | Rubber | 1.5" | 1 7/16" | 5/16" | 1 1/64" | 1 5/8" | 110,000 | 69,600 lbs./sq. in. | ISO 4017, DIN 933 | 90187A121 | 000000 |
| 1 1/8"-2" | 1 1/16" | 1 1/16" | 3 5/8" | Fully Threaded | Coarse | 24 | 10 | Rubber | 1.5" | 1 7/16" | 5/16" | 1 1/64" | 2 1/2" | 110,000 | 69,600 lbs./sq. in. | ISO 4017, DIN 933 | 90187A122 | 00000 |
| 2"-2 13/16" | 1 1/16" | 1 1/16" | 4 7/16" | Fully Threaded | Coarse | 24 | 10 | Rubber | 1.5" | 1 7/16" | 5/16" | 1 1/64" | 3 5/16" | 110,000 | 69,600 lbs./sq. in. | ISO 4017, DIN 933 | 90187A123 | 00000 |