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4-40 Stainless Steel Phillips Round Head Machine Screws

  • 18-8 Stainless Steel Includes 303 & 304 Grades
  • #4-40 Right Hand Thread, UNC 
  • Fully Threaded For Use With A Pre Tapped Hole Or Matching Hex Nut.
  • Rust and Corrosion Resistant
  • Standards: ANSI B18.6.3
  • Please View Matching Nuts & Washers Below.


Item # Image Description Price
RHMSX4-40X.38BAG
4-40 x 3/8 Phillips Round Head Machine Screws Stainless Steel
4-40 x 3/8 Phillips Round Head Machine Screws Stainless Steel
  • SOLD IN BOXES OF 100
  • Phillips Drive
  • Made From 18-8 / 304 Stainless Steel
  • Contact Our Sales Department For Bulk Pricing
$6.00

RHMSX4-40X.50BAG
4-40 x 1/2 Phillips Round Head Machine Screws Stainless Steel
4-40 x 1/2 Phillips Round Head Machine Screws Stainless Steel
  • SOLD IN BOXES OF 100
  • Phillips Drive
  • Made From 18-8 / 304 Stainless Steel
  • Contact Our Sales Department For Bulk Pricing
$6.50

RHMSX4-40X.75BAG
4-40 x 3/4 Round Phil MS 18-8
4-40 x 3/4 Round Phil MS 18-8
  • SOLD IN BOXES OF 100
  • Phillips Drive
  • Made From 18-8 / 304 Stainless Steel
  • Contact Our Sales Department For Bulk Pricing
$8.00

RHMSX4-40X10BAG
4-40 x 1 Phillips Round Head Machine Screws Stainless Steel
4-40 x 1 Phillips Round Head Machine Screws Stainless Steel
  • SOLD IN BOXES OF 100
  • Phillips Drive
  • Made From 18-8 / 304 Stainless Steel
  • Contact Our Sales Department For Bulk Pricing
$8.50

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

QUAL 30-1P
#1 x 2 PHILLIPS DRIVE - POWER BIT - 1/4 HEX DRIVE
#1 x 2 PHILLIPS DRIVE - POWER BIT - 1/4 HEX DRIVE
  • SOLD BY THE PIECE.
  • #1 Phillips
  • 2" Long
  • Standard Style
  • Contact our sales department for bulk pricing.
    		•
    $1.85

    QUAL 250PB1
    #1 x 1 PHILLIPS DRIVE - INSERT BIT - 1/4 HEX DRIVE
    #1 x 1 PHILLIPS DRIVE - INSERT BIT - 1/4 HEX DRIVE
    • SOLD BY THE PIECE.
    • #1 Phillips
    • 1" Long
    • Standard Style
    • Contact our sales department for bulk pricing.
    $1.15

    QUAL 32-1P
    #1 x 2 3/4 PHILLIPS DRIVE - POWER BIT - 1/4 HEX DRIVE
    #1 x 2 3/4 PHILLIPS DRIVE - POWER BIT - 1/4 HEX DRIVE
  • SOLD BY THE PIECE.
  • #1 Phillips
  • 2 3/4" Long
  • Standard Style
  • Contact our sales department for bulk pricing.
    		•
    $1.95

    QUAL 36-1P
    #1 x 6 PHILLIPS DRIVE - POWER BIT - 1/4 HEX DRIVE
    #1 x 6 PHILLIPS DRIVE - POWER BIT - 1/4 HEX DRIVE
  • SOLD BY THE PIECE.
  • #1 Phillips
  • 6" Long
  • Standard Style
  • Contact our sales department for bulk pricing.
    		•
    $3.75

    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