Top 12 Set Screws

Set screws are screws primarily used for fastening purposes. These screws are used for holding together various objects and slabs without the use of a nut. The usefulness of set screws is extensive, ranging from simple fixtures to door handles and even light fittings. Bigger set screws are used in machinery for gear to shaft attachment.

Browse Best Set Screws

Glarks 200-Piece M3 4 5 6 8 Hex Allen Head Socket Set Screw Assortment Kit ...

  • Brand Name: Glarks
  • Model Name: GSC-3
  • Size Options: M3
  • Material Options: Stainless Steel
  • Satisfaction Score: 92%
  • Dimensions: 5.1 x 2.6 x 0.8 inches; 6.38 Ounces
  • Overall Score: 8.7
Store Website: www.amazon.com

HanTof 340Pcs Metric M2.5/M3/M4/M5/M6/M8 304 Stainless Steel Allen Head Socket ...

  • Brand Name: HanTof
  • Model Name: 1
  • Size Options: one size
  • Color Options: silver
  • Material Options: Stainless Steel
  • Satisfaction Score: 95%
  • Dimensions: 7.52 x 5.04 x 1.18 inches; 8.15 Ounces
  • Overall Score: 8.7
Store Website: www.amazon.com

Stainless Steel Replacement Allen AR Grip Screw with Exterior Washers - Set ...

  • Brand Name: MTC
  • Model Name: AX00077DX-02
  • Size Options: 0.875 inches
  • Color Options: Black
  • Material Options: Stainless Steel
  • Satisfaction Score: 98%
  • Dimensions: 7.4 x 5.31 x 2.6 inches; 1.16 Ounces
  • Overall Score: 9.3
Store Website: www.amazon.com

HanTof 380Pcs 4-40 to 3/8"-16 304 Stainless Steel Hex Allen Head Socket Set ...

  • Brand Name: HanTof
  • Model Name: HTF0021
  • Size Options: 4-40 to 3/8"-16
  • Color Options: Silver
  • Material Options: Stainless Steel
  • Item Weight: 15.2 ounces
  • Satisfaction Score: 95%
  • Dimensions: 8.4 x 5.8 x 1.3 inches; 15.2 Ounces
  • Overall Score: 9.1
Store Website: www.amazon.com

Delta Faucet RP25620 Set Screw Chrome Pack of 1 1

  • Brand Name: DELTA FAUCET
  • Model Name: RP25620
  • Size Options: 2 Piece
  • Color Options: Chrome
  • Material Options: Brass
  • Item Weight: 0.16 ounces
  • Satisfaction Score: 89%
  • Dimensions: 0.13 x 0.13 x 0.13 inches
  • Overall Score: 8.3
Store Website: www.amazon.com

VIGRUE 520Pcs M2.5/M3/M4/M5/M6/M8 Hex Allen Head Socket Set Screw Bolts Assortment ...

  • Brand Name: VIGRUE
  • Model Name: Grub Screw
  • Size Options: M2.5/M3/M4/M5/M6/M8, 4-40 to 3/8"-16
  • Material Options: Stainless Steel
  • Satisfaction Score: 97%
  • Dimensions: 6.4 x 4.2 x 1.2 inches; 1 Pounds
  • Overall Score: 9.5
Store Website: www.amazon.com

4-40 x 1″ Socket Set Screws Cup Point Stainless Steel 10 Pack .050 Hex ...

  • Brand Name: JT Custom
  • Model Name: JT1849311
  • Size Options: 1" Length, 1/2" Length, 1/4" Length, 1/8" Length, 3/4" Length and 5 other options.
  • Material Options: Stainless Steel
  • Item Weight: 0.16 ounces
  • Satisfaction Score: 99%
  • Dimensions: 2 x 0.25 x 4 inches
  • Overall Score: 9.3
Store Website: www.amazon.com

Hillman Fasteners 48416 5 LB 2.5x10 Tan Screw, White

  • Brand Name: Hillman Fasteners
  • Model Name: 48416
  • Color Options: White, 2 Sets, 3 Sets, 4 Sets, Pack of 3 White
  • Item Weight: 5 pounds
  • Satisfaction Score: 99%
  • Dimensions: 5.5 x 4.5 x 4.5 inches
  • Overall Score: 9.5
Store Website: www.amazon.com

QLOUNI 200pcs M3 M4 M5 M6 M8 Allen Head Socket Hex Grub Screw Set Cup Point ...

  • Brand Name: QLOUNI
  • Material Options: Stainless Steel
  • Item Weight: 4.8 ounces
  • Satisfaction Score: 91%
  • Dimensions: 5.1 x 2.8 x 0.8 inches
  • Overall Score: 8.9
Store Website: www.amazon.com

Pro Plug Tool for PVC Decking - For Use With The Pro Plug System for PVC

  • Brand Name: Starborn Industries
  • Model Name: BDA580
  • Material Options: Metal
  • Item Weight: 4 ounces
  • Satisfaction Score: 93%
  • Dimensions: 6 x 2 x 4 inches; 4 Ounces
  • Overall Score: 8.7
Store Website: www.amazon.com

Samsung 6009-001526 Screw-Set

  • Brand Name: SAMSUNG
  • Model Name: 6009-001526
  • Color Options: White
  • Material Options: ABS (Acrylonitrile Butadiene Styrene)
  • Item Weight: 0.176 ounces
  • Satisfaction Score: 91%
  • Dimensions: 1 x 1 x 1 inches
  • Overall Score: 8.7
Store Website: www.amazon.com

Set Screws Buying Guide

The minimization of non-essential components in any form of machinery is a core aspect of engineering and carpentry work. Removing redundant non-functional parts from any fixture or engineering contraption leads to construction efficiency and significantly reduces the odds of machinery breakdowns. Moreover, the lesser the number of parts, the easier it will be to repair machines and mend broken furniture. One key component common in engineering and carpentry work is the fastening of various parts, which is traditionally accomplished by the classic nuts and bolts. However, the benefits offered by set screws are more substantial.

 Why set screws, and why not nuts and bolts?

Optimization is the core philosophy of engineering. Any form of innovation and breakthrough in this field has always been a variation of the “one is better than two” philosophy. When a piece of work is accomplished by one component instead of two, then the single component responsible for the work is recruited.  The fastening of components, which is traditionally achieved through nuts and bolts forming two whole components, is also achieved by a set screw, an entire single component. It is because of this redundancy removal that set screws are preferred over nuts and bolts.

What are the set screw tips?

In a two-part mechanism that requires fastening, the set screws are inserted into the threaded hole, enabling the screw to secure its grip on both the components. Hence, the critical factor for ensuring a stable and sturdy grip is the set screw. Set screw come in multiple varieties, all of which cannot be described. However, a few important ones like the cup point and the knurled cup are worth mentioning since the two are predominant screw tip types.

The cup-point and knurl-cup dichotomy

Where set screw tips are concerned, engineers and manufacturing companies are polarized on the correct tip type. While many swear by the cup point tips, many others emphasize the knurl cups. Cup point tips are the most common type of set screw that is excellent at holding parts permanently and is versatile regarding the kind of surfaces they are capable of holding. However, knurl cups are more heavy-duty in their applications because they have the added capacity to resist vibratory force, making them useful in production lines and conveyor belts.

Set screws and their drive types

Based on how they are driven into the components, set screws are divided into three types: the straight slot, the hex socket, and the square socket. Straight slots are most common in woodwork and DIY applications and are driven in by flat-bladed screwdrivers. Hex sockets are meant for hexagonal recesses and are driven by an Allen Wrench, whereas square sockets are used for square-shaped protrusions that are also driven by a square-tipped Allen Wrench.