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4-40 Cup Point Socket Set Screws 18-8 / 304 Stainless Steel

  • Set Screws are a Blind or Headless Fastener That has an Internal Hex Drive.
  • A Cup Point Set Screw Fastener is Driven by a Socket Hex Allen Wrench.
  • A Stainless Steel Set Screw is Sometimes Called a Grub Screw.
  • The Hexagonal Drive or Hex Key L Wrench Allows For Stronger Tightening Compared to Screws that use a Phillips or Flat Head Screw Driver That Sometimes Tend To Strip The Head Of The Screw.
  • Grub Screws are Made to Fit Flush When Installed.
  • We Carry Cup Point Set Screws in 18-8 / 304 Stainless Steel Which Is More Corrosion Resistant.
  • These are the Most Popular Socket Cap Allen Wrench Set Screws for Many Production Applications.
  • #4-40 Right Hand Thread, UNC
  • Please View Matching Nuts & Washers Below.


Item # Image Description Price
SKS4-40X.094BAG
4-40 x 3/32 Socket Set Grub Screws Cup Point 18-8 Stainless Steel
4-40 x 3/32 Socket Set Grub Screws Cup Point 18-8 Stainless Steel
  • SOLD IN BOXES OF 100
  • Cup Point Grub Socket Set Screws
  • Made From 18-8  / 304 Stainless Steel
  • Hex Allen Key = .050
  • Contact Our Sales Department for Bulk Pricing.
$4.00

SKS4-40X.125BAG
4-40 x 1/8 Socket Set Grub Screws Cup Point 18-8 Stainless Steel
4-40 x 1/8 Socket Set Grub Screws Cup Point 18-8 Stainless Steel
  • SOLD IN BOXES OF 100
  • Cup Point Grub Socket Set Screws
  • Made From 18-8  / 304 Stainless Steel
  • Hex Allen Key = .050
  • Contact Our Sales Department for Bulk Pricing.
$4.00

SKS4-40X.185BAG
4-40 x 3/16 Socket Set Grub Screws Cup Point 18-8 Stainless Steel
4-40 x 3/16 Socket Set Grub Screws Cup Point 18-8 Stainless Steel
  • SOLD IN BOXES OF 100
  • Cup Point Grub Socket Set Screws
  • Made From 18-8  / 304 Stainless Steel
  • Hex Allen Key = .050
  • Contact Our Sales Department for Bulk Pricing.
$5.00

SKS4-40X.25BAG
4-40 x 1/4 Socket Set Grub Screws Cup Point 18-8 Stainless Steel
4-40 x 1/4 Socket Set Grub Screws Cup Point 18-8 Stainless Steel
  • SOLD IN BOXES OF 100
  • Cup Point Grub Socket Set Screws
  • Made From 18-8  / 304 Stainless Steel
  • Hex Allen Key = .050
  • Contact Our Sales Department for Bulk Pricing.
$5.00

SKS4-40X.325BAG
4-40 x 5/16 Socket Set Grub Screws Cup Point 18-8 Stainless Steel
4-40 x 5/16 Socket Set Grub Screws Cup Point 18-8 Stainless Steel
  • SOLD IN BOXES OF 100
  • Cup Point Grub Socket Set Screws
  • Made From 18-8  / 304 Stainless Steel
  • Hex Allen Key = .050
  • Contact Our Sales Department for Bulk Pricing.
$5.00

SKS4-40X.380BAG
4-40 x 3/8 Socket Set Grub Screws Cup Point 18-8 Stainless Steel
4-40 x 3/8 Socket Set Grub Screws Cup Point 18-8 Stainless Steel
  • SOLD IN BOXES OF 100
  • Cup Point Grub Socket Set Screws
  • Made From 18-8  / 304 Stainless Steel
  • Hex Allen Key = .050
  • Contact Our Sales Department for Bulk Pricing.
$6.00

SKS4-40X.500BAG
4-40 x 1/2 Socket Set Grub Screws Cup Point 18-8 Stainless Steel
4-40 x 1/2 Socket Set Grub Screws Cup Point 18-8 Stainless Steel
  • SOLD IN BOXES OF 100
  • Cup Point Grub Socket Set Screws
  • Made From 18-8  / 304 Stainless Steel
  • Hex Allen Key = .050
  • Contact Our Sales Department for Bulk Pricing.
$7.00

SKS4-40X.63BAG
4-40 x 5/8 Socket Set Grub Screws Cup Point 18-8 Stainless Steel
4-40 x 5/8 Socket Set Grub Screws Cup Point 18-8 Stainless Steel
  • SOLD IN BOXES OF 100
  • Cup Point Grub Socket Set Screws
  • Made From 18-8  / 304 Stainless Steel
  • Hex Allen Key = .050
  • Contact Our Sales Department for Bulk Pricing.
$8.00

SKS4-40X.75BAG
4-40 x 3/4 Socket Set Grub Screws Cup Point 18-8 Stainless Steel
4-40 x 3/4 Socket Set Grub Screws Cup Point 18-8 Stainless Steel
  • SOLD IN BOXES OF 100
  • Cup Point Grub Socket Set Screws
  • Made From 18-8  / 304 Stainless Steel
  • Hex Allen Key = .050
  • Contact Our Sales Department for Bulk Pricing.
$9.00

SKS4-40X1.00BAG
4-40 x 1 Socket Set Grub Screws Cup Point 18-8 Stainless Steel
4-40 x 1 Socket Set Grub Screws Cup Point 18-8 Stainless Steel
  • SOLD IN BOXES OF 100
  • Cup Point Grub Socket Set Screws
  • Made From 18-8  / 304 Stainless Steel
  • Hex Allen Key = .050
  • Contact Our Sales Department for Bulk Pricing.
$11.00

NHS4-40BAG
4-40 Finish Hex Machine Screw Nuts Stainless Steel
4-40 Finish Hex Machine Screw Nuts Stainless Steel
  • SOLD IN BOXES OF 100.
  • #4-40 Machine Nut 1/4" Wrench Size.
  • Thickness 3/32"
  • Made From 18-8 / 304 Stainless Steel.
  • Contact Our Sales Department For Bulk Pricing.
Special Pricing Available
$5.00

NILS4-40BAG
4-40 Nylon Insert Hex Lock Nuts 18-8 Stainless Steel
4-40 Nylon Insert Hex Lock Nuts 18-8 Stainless Steel
  • SOLD IN BOXES OF 100.
  • #4-40 Thread Nyloc Lock Nut
  • 1/4" Wrench Size.
  • Made From 18-8 / 304 Stainless Steel.
  • Contact Our Sales Department For Bulk Pricing.
$4.00

NKLOCK4-40BAG
4-40 Hex Kep K-Lock Nuts 18-8 / 304 Stainless Steel Keps
4-40 Hex Kep K-Lock Nuts 18-8 / 304 Stainless Steel Keps
  • SOLD IN BOXES OF 100.
  • 1/4" Wrench Size.
  • 18-8 / 304 Grade Stainless Steel
  • Contact Our Sales Department For Bulk Pricing.
$4.25

NILST4-40BAG
4-40 THIN Nylon Insert Hex Jam Lock Nuts 18-8 / 304 Stainless Steel
4-40 THIN Nylon Insert Hex Jam Lock Nuts 18-8 / 304 Stainless Steel
  • SOLD BY THE BOX OF 100.
  • Flats 0.251", Height 0.125"
  • 18-8 / 304 Grade Stainless Steel.
  • Contact Our Sales Department For Bulk Pricing.
Special Pricing Available
$5.00

WFS04BAG
#4 Flat Washers 18-8 / 304 Stainless Steel
#4 Flat Washers 18-8 / 304 Stainless Steel
  • SOLD IN BOXES OF 100.
  • #4 Standard Commercial Pattern Round Flat Washers.
  • Made From 18-8 / 304 Stainless Steel.
  • ID 0.125" OD 0.312" Thickness 0.031"
  • CONTACT OUR SALES DEPARTMENT FOR BULK PRICING.
$3.00

WLS04BAG
#4 Split Ring Lock Washers 18-8 / 304 Stainless Steel
#4 Split Ring Lock Washers 18-8 / 304 Stainless Steel
  • SOLD IN BOXES OF 100.
  • Medium Profile Split Ring Lock Washers.
  • Made From 18-8 / 304 Stainless Steel.
  • ID 0.114" OD 0.209" Thickness 0.025"
  • CONTACT OUR SALES DEPARTMENT FOR BULK PRICING.
Special Pricing Available
$3.00

WINLW04BAG
#4 Internal Tooth Lock Washers 410 Stainless Steel
#4 Internal Tooth Lock Washers 410 Stainless Steel
  • SOLD IN BOXES OF 100.
  • 410 Grade Stainless Steel.
  • Serrated INTERNAL Tooth Star Washers 
  • Please Contact Our Sales Department For Bulk Pricing.
$3.00

WSAE4-803BAG
#4 SAE Flat Washers 18-8 / 304 Stainless Steel
#4 SAE Flat Washers 18-8 / 304 Stainless Steel
  • SOLD BY THE BOX OF 100
  • 18-8 / 304 Stainless Steel
  • ID: .125
  • OD:  .250
  • Thickness: .017 - .028
  • SAE 15795-803
Special Pricing Available
$4.25

NHSCAP4-40BAG25
4-40 Hex Acorn Cap Nuts 18-8 / 304 Stainless Steel
4-40 Hex Acorn Cap Nuts 18-8 / 304 Stainless Steel
  • SOLD BY BAG OF 25.
  • 1/4" Wrench Size.
  • 1/4" Height Overall
  • Made From 18-8 / 304 Stainless Steel.
  • Contact Our Sales Department For Bulk Pricing.
Special Pricing Available
$7.50