The Best 4-40 Set Screw of 2022 – Reviews & Buying Guide
After hours researching and comparing all models on the market, we find out the Best 4-40 Set Screw of 2022. Check our ranking below.
2,698 Reviews Scanned
Rank No. #1
DGBRSM 25pcs 4-40 x 1/8" Carbon Steel Allen Head Hex Hexagon Socket Set Screws Cup Point with Hex Key Wrench, Black
- High-quality material: fixing screws and wrenches are made of stainless steel, which is rust-free, pollution-free and durable.
- Set screws: thick threaded cup tip SS hex socket flat head screws. The head is flat and smooth, the strength is uniform, and the fixing effect is better.
- Scope of application: fully threaded headless screw with recessed hex screwdriver for mechanical applications.
- Product function: Compressive or clamping force is applied through the bottom tip protruding from the hole.
- Package contains: 25 x fixing screws + 1 x hex wrench.
Rank No. #2
BAIRONG 25pcs 4-40 x 1/8" Stainless Steel Allen Head Hex Hexagon Socket Set Screws Cup Point with Hex Key Wrench
- High-quality materials: The fixing screws and wrenches are made of stainless steel, not rusty, pollution-free, and durable.
- Fixing screw: Coarse thread CUP POINT SS hexagon socket flat head screw. The head is flat and smooth, the force is even, and the fastening effect is better.
- Scope of application: Fully threaded headless screws with recessed hex driver, suitable for mechanical applications.
- Product function: It exerts compressive force or clamping force through the bottom tip protruding from the hole.
- Package contains: 25 x fixing screw + 1 x hex wrench.
Rank No. #3
ZDingTech 50pcs Set Screws 4-40 x 3/16 inch 304 Stainless Steel Allen Head Hex Hexagon Socket Set Screws with 1.27mm Allen Wrench,Set Grub Screws Hex Allen Head Socket Set Screws.(3/16" Length)
- The 304 STAINLESS STEEL Set Screws: These 4-40 x 3/16 Hex Socket Set Screws are made of 304 stainless steel. No burr, Work Well. Tough enough to survive severe job-sites in high temperature, freezing weather and humidity, not easy to bend, hard material, to ensure your long-term use
- PREMIUM PRODUCT: The color of this 4-40 allen screws is Silver.The size is 4-40 x 3/16" (Length) CUP POINT SS Socket Set Grub Screws. Size: U.S. thread heights: 3/16" inch
- Total 50PCS 4-40 SET SCREWS and 1PCS Allen WRENCH: Package includes 50pcs allen head socket set screws with 1 bonus corresponding hex drive key:1.27mm allen wrench, offering ease of use by hand. Fixing screws: headless screws that are flush with or below the surface after installation. The internal socket driver needs to use an Allen key (hex wrench) to install
- Scope of application: Often used in machinery to secure gears to shafts. Function: Installs into an internally threaded hole to hold an object into place
- We are confident with our products and your satisfaction is our Top Priority
Rank No. #4
ZDingTech 100pcs Set Screws 4-40 x 1/8 inch 304 Stainless Steel Allen Head Hex Hexagon Socket Set Screws with 1.27mm Allen Wrench,Set Grub Screws Hex Allen Head Socket Set Screws.(1/8" Length)
- 304 STAINLESS STEEL Set Screws: These #4-40 x 1/8 Hex Socket Set Screws are made of 304 stainless steel. No burr, Work Well. Tough enough to survive severe job-sites in high temperature, freezing weather and humidity, not easy to bend, hard material, to ensure your long-term use
- PREMIUM PRODUCT: The color of this 4-40 allen screws is Silver.The size is 4-40 x 1/8" (Length) CUP POINT SS Socket Set Grub Screws. Size: U.S. thread heights: 1/8 inch
- Total 100PCS 4-40 SET SCREWS and 1PCS Allen WRENCH: Package includes 50pcs allen head socket set screws with 1 bonus corresponding hex drive key:1.27mm allen wrench, offering ease of use by hand. Fixing screws: headless screws that are flush with or below the surface after installation. The internal socket driver needs to use an Allen key (hex wrench) to install
- Scope of application: Often used in machinery to secure gears to shafts. Function: Installs into an internally threaded hole to hold an object into place
- 5. We are highly confident with our products and your satisfaction is our Top Priority
Rank No. #5
HanTof 440Pcs 22 Sizes,4#-40 to 1/4"-20 Standard SAE Allen Head Socket Hex Grub Screw Assortment Kit,Internal Hex Drive Cup-Point Set Screws Set with 5pcs Hex Wrenches,12.9 Class Alloy Steel-Black
- 22 Sizes: Each Sizes 20pcs,total 440pcs Standard SAE Allen Socket Head Hex Grub Screw Assortment Kit ,Internal Hex Drive Cup-Point Set Screws with 5pcs Hex Drive
- Durable material:12.9 Class Ultra Hard and Durable Alloy Steel, providing the good resisitance to corrosion and high temperature good tensile strength, durable.
- Set Includes: #4-40x1/8";#4-40x3/16";#4-40x1/4";#4-40x5/16";
#6-32x1/8";#6-32x3/16";#6-32x1/4";#6-32x5/16";
#8-32x3/16";#8-32x1/4";#8-32x5/16";#8-32x3/8" ;
#10-24x1/4";#10-24x5/16";#10-24x3/8";#10-24x1/2";
#10-32x1/4";#10-32x5/16";#10-32x3/8";#10-32x1/2";
1/4"-20x5/16";1/4"-20x3/8" - WIDE APPLICATIONS:Suitable for door handles, faucet, light fixture, knobs, armament repair, plumber and other small repairs around the shop, garage or home.
- Character: Set includes most common SAE standard sizes so you can easily replace a lost screw;All kinds of headless cup points grub screws are in plastic bags and organized in a plastic box to keep them neat,Easy to install and durable to use
Rank No. #6
uxcell a15120300ux0116 4#-40x1/8inch Hex Socket Set Cap Point Grub Screws Black 100pcs (Pack of 100)
- Drive Type: Hex Socket; Head Style: Flat Head; Material: 12.9 Alloy Steel
- Package Content: 100(+/-2%)pcs x Grub Screws; Product Name: Grub Screws
- Thread Size: 1/8"(L); Weight: 8g
- Main Color: Black; Total Length: 1/8"(L)
- Thread Diameter: 4#; Thread Counts: 40
Rank No. #7
DGBRSM 25pcs 4-40 x 1/2" Stainless Steel Allen Head Hex Hexagon Socket Set Screws Cup Point with Hex Key Wrench
- High-quality materials: The fixing screws and wrenches are made of stainless steel, not rusty, pollution-free, and durable.
- Fixing screw: Coarse thread CUP POINT SS hexagon socket flat head screw. The head is flat and smooth, the force is even, and the fastening effect is better.
- Scope of application: Fully threaded headless screws with recessed hex driver, suitable for mechanical applications.
- Product function: It exerts compressive force or clamping force through the bottom tip protruding from the hole.
- Package contains: 25 x fixing screw + 1 x hex wrench.
Rank No. #8
MonsterBolts - #4-40 x 1/8" Cup Point Set Screws, ASME B18.3, Stainless Steel, 10 Pack
- Brand : MonsterBolts
- Diameter - Thread Size : #4 - 40 TPI (UNC / Coarse Thread)
- Length : 1/8"
- Material : 18-8 Stainless Steel (A2)
- Specifications : ASME B18.3 / ASTM F912
Rank No. #9
LUORNG 25pcs 4-40 x 1/4" Allen Head Hex Hexagon Socket Set Screws Stainless Steel Cup Point Grub Screw Set Bolt with 1 Piece Hex Key Wrench
- Fixing screw: Coarse-toothed CUP POINT SS socket head flat head screw, with flat and smooth head, deep thread, uniform force, good tightening effect, and not easy to slip during rotation.
- High-quality material: The fixing screw and wrench are made of high-quality 304 stainless steel, which combines nickel-chromium, acid resistance, high hardness, no rust in humid environment, and strong oxidation resistance. Built to last. The material is environmentally friendly and pollution-free.
- Scope of application: Widely used in mechanical equipment, civil hardware and compact instruments, such as gear fixing, cam fixing, household door handles, hardware faucets, towel racks, etc.
- Function: It is usually used to fix the object without using a nut, and it can be installed concealed.
- The package contains: Fixing screw x 25 + Hex key x 1. Multipurpose hexagon socket head set screw, you can easily drive with a hexagon wrench, easy to operate.
Rank No. #10
ZDingTech 50pcs Set Screws 4-40 x 5/16 inch 304 Stainless Steel Allen Head Hex Socket Set Screws Grub Hex Head Sockets with 1.27mm Allen Wrench.(5/16" Length)
- 304 STAINLESS STEEL Set Screws: These 4-40 x 5/16 Hex Socket Set Screws are made of 304 stainless steel. No burr, Work Well. Tough enough, not easy to bend, hard material, to ensure your long-term use.
- PREMIUM PRODUCT: The color of this 4-40 allen screws is Silver.The size is 4-40 x 5/16" (Length) CUP POINT SS Socket Set Grub Screws. Size: U.S. thread heights: 5/16 inch
- 50PCS 4-40 SET SCREWS and 1PCS Allen WRENCH: Package includes 50pcs allen head socket set screws with 1 bonus corresponding hex drive key:1.27mm allen wrench, offering ease of use by hand. Fixing screws: headless screws that are flush with or below the surface after installation. The internal socket driver needs to use an Allen key (hex wrench) to install
- Scope of application:.Often used in machinery to secure gears to shafts. Function: Installs into an internally threaded hole to hold an object into place.ZDingTech 50pcs Set Screws 4-40 x 5/16 inch 304 Stainless Steel Allen Head Hex Hexagon Socket Set Screws with 1.27mm allen wrench,Set Grub Screws Hex Allen Head Socket Set Screws.(5/16" Length)
- We are confident with our products and your satisfaction is our Top Priority
Last update on 2025-03-14 / Affiliate links / Images from Amazon Product Advertising API
How Do You Buy The Best 4-40 Set Screw?
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- Features: What bells and whistles matter for an 4-40 Set Screw?
- Specifications: How powerful they are can be measured.
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- Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their 4-40 Set Screw.
- Product Quality: You don’t always get what you pay for with an 4-40 Set Screw, sometimes less, and sometimes more.
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