Zoro Select Knurled Thumb Screw 4-40 Thread Size 1 Inch Length 18-8 Stainless Steel Slotted Drive Pack Of 5
Why you'll like it
- Tool-Free Fastening — Diamond-pattern knurled head allows secure manual grip for quick tightening and loosening without tools.
- Premium Durability — Made from high-strength 18-8 stainless steel with a passivated finish for superior corrosion resistance.
- Dual Drive Design — Features both a knurled grip for fingers and a slotted top for standard screwdriver compatibility.
- Industrial Grade Strength — Offers a tensile strength of 80,000 psi and Rockwell hardness rating of B85 to B95 for heavy-duty reliability.
- Convenient Package — Includes a pack of five precision-threaded 4-40 screws with a 1-inch length for various assembly needs.
Product details
Description
Upgrade your assembly and adjustment tasks with the Zoro Select Knurled Thumb Screw, featuring a reliable 4-40 thread size and a 1-inch length. Crafted from premium 18-8 stainless steel with a passivated finish, these screws offer exceptional durability, corrosion resistance, and a robust tensile strength of 80,000 psi.
Designed with a diamond-pattern knurled cylindrical head and a straight-slot top, they allow for quick, secure hand-tightening as well as screwdriver adjustments when needed. Ideal for electronics, small enclosures, camera accessories, and light mechanical assemblies where frequent fastening and unfastening are required without compromising structural integrity.
Each pack includes five precision-engineered thumb screws built to meet strict industrial standards, providing a dependable solution for technicians, hobbyists, and professionals seeking efficient, tool-free operation.
How to use
- Align the 4-40 threaded shank with the pre-tapped hole or component.
- Rotate the knurled head clockwise by hand until secure, or use a 3/64-inch slotted screwdriver for final torque adjustments.
Ingredients
18-8 Stainless Steel, Passivated Finish
As printed by the brand. Check the pack label if you have an allergy.
Specifications
| Brand | Zoro Select |
|---|---|
| UPC | 768182362063 |
| Ships from | USA (sourced directly), checked in Navi Mumbai |
| Sold by | Dropy.in |
Ratings & reviews
From our customers
FAQs
What are the dimensions and thread size of these thumb screws?
These thumb screws feature a 4-40 thread size, a 1-inch screw length, a 3/16-inch head diameter, and a 3/8-inch head height, packaged in a set of five.
Are these screws suitable for electronic enclosures?
Yes, they are commonly used in electronics, small enclosures, and light machinery where frequent manual adjustments and secure fastening are required.
Can these screws be tightened with a tool?
Yes, while they are designed for tool-free hand tightening via the knurled head, they also feature a slotted drive top for screwdriver use.
Are these genuine USA-imported products available in India?
Yes, Dropy sources these authentic items directly from the USA, ensuring you receive genuine imported hardware delivered straight to your doorstep in India.
What material are these thumb screws made of?
They are manufactured from high-grade 18-8 stainless steel with a passivated finish to ensure long-lasting corrosion resistance and strength.
How long will delivery take?
Most orders arrive in 15–20 days: we source each product directly from the USA, check it at our Navi Mumbai warehouse and pack it on video. Items marked Dropy Express ship from our India warehouse and arrive in 3–5 days.
Is cash on delivery available?
Full cash on delivery is available all over India on Dropy Express items. For other orders from ₹2,499 to ₹15,000 you can use Partial COD: pay 25% online now and the rest in cash on delivery.
Are your products genuine?
Yes. Every product is 100% authentic, sourced directly from the USA, quality-checked and packed on video at our Navi Mumbai warehouse.
What if my order arrives damaged or wrong?
Write to us at [email protected] as soon as it arrives. Damaged, wrong or not as described, our Buyer Protection gives you a full refund. The details are in our Return, Refund & Cancellation Policy.
Is delivery free?
Delivery is free on orders from ₹1,499. Below that a ₹79 delivery fee applies.