Socket Head Captive Panel Screws
Install through a hole and thread on a retainer (sold separately) to keep these screws secure—no special tools are required. Use an optional spring (sold separately) to provide even compression against panels. Screws, retainers, and springs are made from chemical-resistant 18-8 stainless steel and may be mildly magnetic. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Screws | Retainers | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head | Each | Pkg. | Optional Springs | |||||||||||
| Lg. | Thread Lg. | Dia. | Ht. | Drive Size | 1-4 | 5-Up | Pkg. Qty. | 1-4 | 5-Up | Pkg. Qty. | Pkg. | |||
18-8 Stainless Steel | ||||||||||||||
2-56 | ||||||||||||||
| 1/4" | 1/8" | 0.141" | 0.086" | 5/64" | 000000000 | 00000 | 00000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 3/8" | 1/8" | 0.141" | 0.086" | 5/64" | 000000000 | 0000 | 0000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 1/2" | 1/8" | 0.141" | 0.086" | 5/64" | 000000000 | 0000 | 0000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
4-40 | ||||||||||||||
| 1/4" | 5/32" | 0.188" | 0.11" | 3/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 000000 | 000000 | 5 | 0000000 | 00000 |
| 5/16" | 5/32" | 0.188" | 0.11" | 3/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 3/8" | 5/32" | 0.188" | 0.11" | 3/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 7/16" | 5/32" | 0.188" | 0.11" | 3/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1/2" | 5/32" | 0.188" | 0.11" | 3/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 5/8" | 5/32" | 0.188" | 0.11" | 3/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 3/4" | 5/32" | 0.188" | 0.112" | 3/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 7/8" | 5/32" | 0.188" | 0.112" | 3/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1" | 5/32" | 0.188" | 0.112" | 3/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
6-32 | ||||||||||||||
| 3/8" | 3/16" | 0.219" | 0.136" | 7/64" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 7/16" | 3/16" | 0.219" | 0.136" | 7/64" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1/2" | 3/16" | 0.219" | 0.136" | 7/64" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 9/16" | 3/16" | 0.219" | 0.136" | 7/64" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 5/8" | 3/16" | 0.219" | 0.136" | 7/64" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 3/4" | 3/16" | 0.219" | 0.136" | 7/64" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 7/8" | 3/16" | 0.234" | 0.138" | 7/64" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1" | 3/16" | 0.219" | 0.136" | 7/64" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1 1/8" | 3/16" | 0.234" | 0.138" | 7/64" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1 1/4" | 3/16" | 0.234" | 0.138" | 7/64" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
8-32 | ||||||||||||||
| 1/2" | 3/16" | 0.266" | 0.162" | 9/64" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 9/16" | 3/16" | 0.266" | 0.162" | 9/64" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 5/8" | 3/16" | 0.266" | 0.162" | 9/64" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 3/4" | 3/16" | 0.266" | 0.162" | 9/64" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 7/8" | 3/16" | 0.266" | 0.162" | 9/64" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1" | 3/16" | 0.266" | 0.162" | 9/64" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1 1/8" | 3/16" | 0.281" | 0.164" | 9/64" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1 1/4" | 3/16" | 0.281" | 0.164" | 9/64" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
10-24 | ||||||||||||||
| 1/2" | 1/4" | 0.313" | 0.19" | 5/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 5/8" | 1/4" | 0.313" | 0.19" | 5/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 3/4" | 1/4" | 0.313" | 0.19" | 5/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 7/8" | 1/4" | 0.313" | 0.19" | 5/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1" | 1/4" | 0.313" | 0.19" | 5/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1 1/4" | 1/4" | 0.313" | 0.19" | 5/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
10-32 | ||||||||||||||
| 1/2" | 1/4" | 0.313" | 0.187" | 5/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 9/16" | 1/4" | 0.313" | 0.187" | 5/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 5/8" | 1/4" | 0.313" | 0.187" | 5/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 3/4" | 1/4" | 0.313" | 0.187" | 5/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 7/8" | 1/4" | 0.313" | 0.187" | 5/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1" | 1/4" | 0.313" | 0.187" | 5/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1 1/4" | 1/4" | 0.313" | 0.187" | 5/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1 3/8" | 1/4" | 0.313" | 0.187" | 5/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1 1/2" | 1/4" | 0.313" | 0.187" | 5/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1 3/4" | 1/4" | 0.313" | 0.187" | 5/32" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
1/4"-20 | ||||||||||||||
| 5/8" | 1/4" | 0.375" | 0.247" | 3/16" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 3/4" | 1/4" | 0.375" | 0.247" | 3/16" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 7/8" | 1/4" | 0.375" | 0.247" | 3/16" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 1" | 1/4" | 0.375" | 0.247" | 3/16" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 1 1/4" | 1/4" | 0.375" | 0.247" | 3/16" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 1 1/2" | 1/4" | 0.375" | 0.247" | 3/16" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 1 3/4" | 1/4" | 0.375" | 0.247" | 3/16" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 2" | 1/4" | 0.375" | 0.247" | 3/16" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
1/4"-28 | ||||||||||||||
| 1/2" | 1/4" | 0.375" | 0.25" | 3/16" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 5/8" | 1/4" | 0.375" | 0.25" | 3/16" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 3/4" | 1/4" | 0.375" | 0.25" | 3/16" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 1" | 1/4" | 0.375" | 0.25" | 3/16" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 1 1/4" | 1/4" | 0.375" | 0.25" | 3/16" | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 1 1/2" | 1/4" | 0.375" | 0.25" | 3/16" | 000000000 | 00000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
5/16"-18 | ||||||||||||||
| 1/2" | 3/8" | 0.469" | 0.312" | 1/4" | 000000000 | 0000 | 0000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 5/8" | 3/8" | 0.469" | 0.312" | 1/4" | 000000000 | 0000 | 0000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 3/4" | 3/8" | 0.469" | 0.312" | 1/4" | 000000000 | 0000 | 0000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 7/8" | 3/8" | 0.469" | 0.312" | 1/4" | 000000000 | 0000 | 0000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 1" | 3/8" | 0.469" | 0.312" | 1/4" | 000000000 | 0000 | 0000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 1 1/4" | 3/8" | 0.469" | 0.312" | 1/4" | 000000000 | 00000 | 0000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 1 1/2" | 3/8" | 0.469" | 0.312" | 1/4" | 000000000 | 0000 | 0000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 2" | 3/8" | 0.469" | 0.312" | 1/4" | 000000000 | 00000 | 0000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
3/8"-16 | ||||||||||||||
| 1/2" | 3/8" | 0.563" | 0.375" | 5/16" | 000000000 | 00000 | 0000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 5/8" | 3/8" | 0.563" | 0.375" | 5/16" | 000000000 | 00000 | 00000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 3/4" | 3/8" | 0.563" | 0.375" | 5/16" | 000000000 | 00000 | 00000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 7/8" | 3/8" | 0.563" | 0.375" | 5/16" | 000000000 | 00000 | 00000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 1" | 3/8" | 0.563" | 0.372" | 5/16" | 000000000 | 0000 | 0000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 1 1/4" | 3/8" | 0.563" | 0.375" | 5/16" | 000000000 | 00000 | 00000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 1 1/2" | 3/8" | 0.563" | 0.372" | 5/16" | 000000000 | 00000 | 0000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 1 3/4" | 3/8" | 0.563" | 0.375" | 5/16" | 000000000 | 00000 | 00000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
1/2"-13 | ||||||||||||||
| 3/4" | 3/8" | 0.75" | 0.5" | 3/8" | 000000000 | 00000 | 00000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 7/8" | 3/8" | 0.75" | 0.5" | 3/8" | 000000000 | 00000 | 00000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 1" | 3/8" | 0.75" | 0.5" | 3/8" | 000000000 | 00000 | 00000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 1 1/4" | 3/8" | 0.75" | 0.5" | 3/8" | 000000000 | 00000 | 00000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 1 1/2" | 3/8" | 0.75" | 0.5" | 3/8" | 000000000 | 00000 | 00000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 1 3/4" | 3/8" | 0.75" | 0.5" | 3/8" | 000000000 | 00000 | 00000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 2" | 3/8" | 0.75" | 0.5" | 3/8" | 000000000 | 00000 | 00000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
M3 × 0.5 mm | ||||||||||||||
| 8mm | 4mm | 5.5mm | 3mm | 2.5 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 10mm | 4mm | 5.5mm | 3mm | 2.5 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 12mm | 4mm | 5.5mm | 3mm | 2.5 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 16mm | 4mm | 5.5mm | 3mm | 2.5 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 18mm | 4mm | 5.5mm | 3mm | 2.5 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 20mm | 4mm | 5.5mm | 3mm | 2.5 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 25mm | 4mm | 5.5mm | 3mm | 2.5 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
M4 × 0.7 mm | ||||||||||||||
| 8mm | 4mm | 7mm | 4mm | 3 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 10mm | 4mm | 7mm | 4mm | 3 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 12mm | 4mm | 7mm | 4mm | 3 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 16mm | 4mm | 7mm | 4mm | 3 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 20mm | 4mm | 7mm | 4mm | 3 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 25mm | 4mm | 7mm | 4mm | 3 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
M5 × 0.8 mm | ||||||||||||||
| 8mm | 4mm | 8.5mm | 5mm | 4 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 10mm | 4mm | 8.5mm | 5mm | 4 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 12mm | 4mm | 8.5mm | 5mm | 4 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 16mm | 4mm | 8.5mm | 5mm | 4 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 20mm | 4mm | 8.5mm | 5mm | 4 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 25mm | 4mm | 8.5mm | 5mm | 4 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 30mm | 4mm | 8.5mm | 5mm | 4 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
M6 × 1 mm | ||||||||||||||
| 10mm | 6mm | 10mm | 6mm | 5 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 12mm | 6mm | 10mm | 6mm | 5 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 16mm | 6mm | 10mm | 6mm | 5 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 20mm | 6mm | 10mm | 6mm | 5 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 25mm | 6mm | 10mm | 6mm | 5 mm | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 30mm | 6mm | 10mm | 6mm | 5 mm | 000000000 | 00000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
M8 × 1.25 mm | ||||||||||||||
| 16mm | 8mm | 13mm | 8mm | 6 mm | 000000000 | 0000 | 0000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 20mm | 8mm | 13mm | 8mm | 6 mm | 000000000 | 00000 | 0000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 25mm | 8mm | 13mm | 8mm | 6 mm | 000000000 | 00000 | 0000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 26mm | 8mm | 13mm | 8mm | 6 mm | 000000000 | 00000 | 00000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 30mm | 8mm | 13mm | 8mm | 6 mm | 000000000 | 00000 | 00000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
| 40mm | 8mm | 13mm | 8mm | 6 mm | 000000000 | 00000 | 00000 | __ | 000000 | 00 | 00 | __ | 000000 | 00 |
Thumb-Screw-Head Captive Panel Screws
Install through a hole and thread on a retainer (sold separately) to keep these screws secure—no special tools are required. Use an optional spring (sold separately) to provide even compression against panels. Screws, retainers, and springs are made from chemical-resistant 18-8 stainless steel and may be mildly magnetic. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Screws | Retainers | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head | Each | Pkg. | Optional Springs | |||||||||||
| Lg. | Thread Lg. | Dia. | Ht. | Specifications Met | 1-4 | 5-Up | Pkg. Qty. | 1-4 | 5-Up | Pkg. Qty. | Pkg. | |||
18-8 Stainless Steel | ||||||||||||||
4-40 | ||||||||||||||
| 3/8" | 1/8" | 0.25" | 0.25" | ASTM A581, ASTM A582 | 000000000 | 00000 | 00000 | 25 | 000000000 | 000000 | 000000 | 5 | 0000000 | 00000 |
| 1/2" | 1/8" | 0.25" | 0.25" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 5/8" | 1/8" | 0.25" | 0.25" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 3/4" | 1/8" | 0.25" | 0.25" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 7/8" | 1/8" | 0.25" | 0.25" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1" | 1/8" | 0.25" | 0.25" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
6-32 | ||||||||||||||
| 1/2" | 7/32" | 0.313" | 0.313" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 5/8" | 7/32" | 0.313" | 0.313" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 3/4" | 7/32" | 0.313" | 0.313" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 7/8" | 7/32" | 0.313" | 0.313" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1" | 7/32" | 0.313" | 0.313" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
8-32 | ||||||||||||||
| 1/2" | 7/32" | 0.313" | 0.313" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 5/8" | 7/32" | 0.313" | 0.313" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 3/4" | 7/32" | 0.313" | 0.313" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 7/8" | 7/32" | 0.313" | 0.313" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1" | 7/32" | 0.313" | 0.313" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
10-24 | ||||||||||||||
| 1/2" | 1/4" | 0.375" | 0.438" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 5/8" | 1/4" | 0.375" | 0.438" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 3/4" | 1/4" | 0.375" | 0.438" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 7/8" | 1/4" | 0.375" | 0.438" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1" | 1/4" | 0.375" | 0.438" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1 1/8" | 1/4" | 0.375" | 0.438" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1 1/4" | 1/4" | 0.375" | 0.438" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1 3/8" | 1/4" | 0.375" | 0.438" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1 1/2" | 1/4" | 0.375" | 0.438" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
10-32 | ||||||||||||||
| 1/2" | 1/4" | 0.375" | 0.438" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 5/8" | 1/4" | 0.375" | 0.438" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 3/4" | 1/4" | 0.375" | 0.438" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 7/8" | 1/4" | 0.375" | 0.438" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1" | 1/4" | 0.375" | 0.438" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1 1/8" | 1/4" | 0.375" | 0.438" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1 1/4" | 1/4" | 0.375" | 0.438" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1 3/8" | 1/4" | 0.375" | 0.438" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1 1/2" | 1/4" | 0.375" | 0.438" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
1/4"-20 | ||||||||||||||
| 5/8" | 5/16" | 0.5" | 0.563" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 3/4" | 5/16" | 0.5" | 0.563" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 7/8" | 5/16" | 0.5" | 0.563" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 1" | 5/16" | 0.5" | 0.563" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 1 1/4" | 5/16" | 0.5" | 0.563" | ASTM A581, ASTM A582 | 000000000 | 00000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 1 1/2" | 5/16" | 0.5" | 0.563" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
1/4"-28 | ||||||||||||||
| 5/8" | 5/16" | 0.5" | 0.563" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 3/4" | 5/16" | 0.5" | 0.563" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 7/8" | 5/16" | 0.5" | 0.563" | ASTM A581, ASTM A582 | 000000000 | 00000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 1" | 5/16" | 0.5" | 0.563" | ASTM A581, ASTM A582 | 000000000 | 00000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 1 1/4" | 5/16" | 0.5" | 0.563" | ASTM A581, ASTM A582 | 000000000 | 00000 | 00000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
| 1 1/2" | 5/16" | 0.5" | 0.563" | ASTM A581, ASTM A582 | 000000000 | 00000 | 00000 | 25 | 000000000 | 00000 | 00000 | 5 | 000000 | 0000 |
M3 × 0.5 mm | ||||||||||||||
| 11mm | 3.2mm | 6.5mm | 6.5mm | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 3 | 000000000 | 0000 |
| 13mm | 3.2mm | 6.5mm | 6.5mm | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 3 | 000000000 | 0000 |
| 14.5mm | 3.2mm | 6.5mm | 6.5mm | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 3 | 000000000 | 0000 |
| 17.5mm | 3.2mm | 6.5mm | 6.5mm | ASTM A581, ASTM A582 | 000000000 | 00000 | 00000 | 25 | 000000000 | 00000 | 00000 | 3 | 000000000 | 0000 |
| 22mm | 3.2mm | 6.5mm | 6.5mm | ASTM A581, ASTM A582 | 000000000 | 00000 | 00000 | 25 | 000000000 | 00000 | 00000 | 3 | 000000000 | 0000 |
M3.5 × 0.6 mm | ||||||||||||||
| 11mm | 5.5mm | 8mm | 8mm | ASTM A581, ASTM A582 | 000000000 | 00000 | 0000 | 25 | 000000000 | 00000 | 00000 | 3 | 000000000 | 0000 |
| 13mm | 5.5mm | 8mm | 8mm | ASTM A581, ASTM A582 | 000000000 | 00000 | 0000 | 25 | 000000000 | 00000 | 00000 | 3 | 000000000 | 0000 |
| 14.5mm | 5.5mm | 8mm | 8mm | ASTM A581, ASTM A582 | 000000000 | 00000 | 0000 | 25 | 000000000 | 00000 | 00000 | 3 | 000000000 | 0000 |
| 17.5mm | 5.5mm | 8mm | 8mm | ASTM A581, ASTM A582 | 000000000 | 00000 | 00000 | 25 | 000000000 | 00000 | 00000 | 3 | 000000000 | 0000 |
| 22mm | 5.5mm | 8mm | 8mm | ASTM A581, ASTM A582 | 000000000 | 00000 | 00000 | 25 | 000000000 | 00000 | 00000 | 3 | 000000000 | 0000 |
M4 × 0.7 mm | ||||||||||||||
| 11mm | 5.5mm | 8mm | 8mm | ASTM A581, ASTM A582 | 000000000 | 00000 | 0000 | 25 | 000000000 | 00000 | 00000 | 3 | 000000000 | 0000 |
| 13mm | 5.5mm | 8mm | 8mm | ASTM A581, ASTM A582 | 000000000 | 00000 | 0000 | 25 | 000000000 | 00000 | 00000 | 3 | 000000000 | 0000 |
| 14.5mm | 5.5mm | 8mm | 8mm | ASTM A581, ASTM A582 | 000000000 | 00000 | 0000 | 25 | 000000000 | 00000 | 00000 | 3 | 000000000 | 0000 |
| 17.5mm | 5.5mm | 8mm | 8mm | ASTM A581, ASTM A582 | 000000000 | 00000 | 00000 | 25 | 000000000 | 00000 | 00000 | 3 | 000000000 | 0000 |
| 22mm | 5.5mm | 8mm | 8mm | ASTM A581, ASTM A582 | 000000000 | 00000 | 00000 | 25 | 000000000 | 00000 | 00000 | 3 | 000000000 | 0000 |
Rounded Head Captive Panel Screws
Install through a hole and thread on a retainer (sold separately) to keep these screws secure—no special tools are required. Use an optional spring (sold separately) to provide even compression against panels. Screws, retainers, and optional springs are made from chemical-resistant 18-8 stainless steel and may be mildly magnetic. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Screws | Retainers | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head | Each | Pkg. | Optional Springs | |||||||||||
| Lg. | Thread Lg. | Dia. | Ht. | Specifications Met | 1-4 | 5-Up | Pkg. Qty. | 1-4 | 5-Up | Pkg. Qty. | Pkg. | |||
18-8 Stainless Steel | ||||||||||||||
4-40  | ||||||||||||||
| 1/2" | 3/16" | 0.172" | 0.107" | ASTM A581, ASTM A582 | 000000000 | 00000 | 00000 | 25 | 000000000 | 000000 | 000000 | 5 | 0000000 | 00000 |
| 3/4" | 3/16" | 0.172" | 0.107" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
6-32 | ||||||||||||||
| 1/2" | 7/32" | 0.219" | 0.132" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 3/4" | 7/32" | 0.219" | 0.132" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1" | 7/32" | 0.219" | 0.132" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
8-32 | ||||||||||||||
| 1/2" | 7/32" | 0.25" | 0.156" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 3/4" | 7/32" | 0.25" | 0.156" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1" | 7/32" | 0.25" | 0.156" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
10-24 | ||||||||||||||
| 1/2" | 9/32" | 0.313" | 0.18" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 3/4" | 9/32" | 0.313" | 0.18" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1" | 9/32" | 0.313" | 0.18" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
10-32 | ||||||||||||||
| 1/2" | 9/32" | 0.313" | 0.18" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 3/4" | 9/32" | 0.313" | 0.18" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |
| 1" | 9/32" | 0.313" | 0.18" | ASTM A581, ASTM A582 | 000000000 | 0000 | 0000 | 25 | 000000000 | 00000 | 00000 | 5 | 0000000 | 0000 |