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3/8-16 Stainless Steel Phillips Flat Head Machine Screws

  • 18-8 Stainless Steel Includes 303 & 304 Grades
  • 3/8"-16 Right Hand Thread, UNC 
  • Fully Threaded
  • Rust and Corrosion Resistant
  • Flat Head Machine Screws Are Designed To Sit Flush Once Installed 
  • Standards: ANSI B18.6.3
  • Please View Matching Nuts & Washers Below.


Item # Image Description Price
FHMSX3/816X.750BAG10
3/8-16 x 3/4
3/8-16 x 3/4" Phillips Flat Head Machine Screws Stainless Steel
  • SOLD BY BAG OF 10.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 3/8"-16
  • Fully Threaded
  • Phillips Drive Head #4
  • Contact Our Sales Department For Buld Pricing!
Special Pricing Available
$5.50

FHMSX3/816X100BAG10
3/8-16 x 1
3/8-16 x 1" Phillips Flat Head Machine Screws Stainless Steel
  • SOLD BY BAG OF 10.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 3/8"-16
  • Fully Threaded
  • Phillips Drive Head #4
  • Contact Our Sales Department For Buld Pricing!
Special Pricing Available
$5.75

FHMSX3/816X125BAG10
3/8-16 x 1-1/4
3/8-16 x 1-1/4" Phillips Flat Head Machine Screws Stainless Steel
  • SOLD BY BAG OF 10.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 3/8"-16
  • Fully Threaded
  • Phillips Drive Head #4
  • Contact Our Sales Department For Buld Pricing!
Special Pricing Available
$6.00

FHMSX3/816X150BAG10
3/8-16 x 1-1/2
3/8-16 x 1-1/2" Phillips Flat Head Machine Screws Stainless Steel
  • SOLD BY BAG OF 10.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 3/8"-16
  • Fully Threaded
  • Phillips Drive Head #4
  • Contact Our Sales Department For Buld Pricing!
Special Pricing Available
$6.50

FHMSX3/816X175BAG10
3/8-16 x 1-3/4
3/8-16 x 1-3/4" Phillips Flat Head Machine Screws Stainless Steel
  • SOLD BY BAG OF 10.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 3/8"-16
  • Fully Threaded
  • Phillips Drive Head #4
  • Contact Our Sales Department For Buld Pricing!
Special Pricing Available
$7.00

FHMSX3/816X200BAG10
3/8-16 x 2
3/8-16 x 2" Phillips Flat Head Machine Screws Stainless Steel
  • SOLD BY BAG OF 10.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 3/8"-16
  • Fully Threaded
  • Phillips Drive Head #4
  • Contact Our Sales Department For Buld Pricing!
Special Pricing Available
$7.50

FHMSX3/816X250BAG10
3/8-16 x 2-1/2
3/8-16 x 2-1/2" Phillips Flat Head Machine Screws Stainless Steel
  • SOLD BY BAG OF 10.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 3/8"-16
  • Fully Threaded
  • Phillips Drive Head #4
  • Contact Our Sales Department For Buld Pricing!
Special Pricing Available
$8.50

FHMSX3/816X300BAG10
3/8-16 x 3
3/8-16 x 3" Phillips Flat Head Machine Screws Stainless Steel
  • SOLD BY BAG OF 10.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 3/8"-16
  • Fully Threaded
  • Phillips Drive Head #4
  • Contact Our Sales Department For Buld Pricing!
Special Pricing Available
$10.00

FHMSX3/816X350BAG10
3/8-16 x 3-1/2
3/8-16 x 3-1/2" Phillips Flat Head Machine Screws Stainless Steel
  • SOLD BY BAG OF 10.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 3/8"-16
  • Fully Threaded
  • Phillips Drive Head #4
  • Contact Our Sales Department For Buld Pricing!
Special Pricing Available
$12.00

FHMSX3/816X400BAG10
3/8-16 x 4
3/8-16 x 4" Phillips Flat Head Machine Screws Stainless Steel
  • SOLD BY BAG OF 10.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 3/8"-16
  • Fully Threaded
  • Phillips Drive Head #4
  • Contact Our Sales Department For Buld Pricing!
Special Pricing Available
$15.00

FHMSX3/816X450
3/8-16 x 4-1/2
3/8-16 x 4-1/2" Phillips Flat Head Machine Screws Stainless Steel
  • SOLD BY THE PIECE.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 3/8"-16
  • Fully Threaded
  • Phillips Drive Head #4
  • Contact Our Sales Department For Buld Pricing!
Special Pricing Available
$3.25

FHMSX3/816X500
3/8-16 x 5
3/8-16 x 5" Phillips Flat Head Machine Screws Stainless Steel
  • SOLD BY THE PIECE.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 3/8"-16
  • Fully Threaded
  • Phillips Drive Head #4
  • Contact Our Sales Department For Buld Pricing!
Special Pricing Available
$3.75

FHMSX3/816X600
3/8-16 x 6
3/8-16 x 6" Phillips Flat Head Machine Screws Stainless Steel
  • SOLD BY THE PIECE.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 3/8"-16
  • Fully Threaded
  • Phillips Drive Head #4
  • Contact Our Sales Department For Buld Pricing!
Special Pricing Available
$5.50

WFS3/8BAG50
3/8
3/8" Flat Washers 18-8 / 304 Stainless Steel
  • SOLD BY THE BAG OF 50
  • 3/8" Standard Commercial Pattern Round Flat Washers.
  • Made From 18-8 / 304 Stainless Steel
  • ID 0.406" OD 7/8" Thickness 0.050" 
  • CONTACT OUR SALES DEPARTMENT FOR BULK PRICING.
Special Pricing Available
$4.50

NHS3/8-16BAG10
3/8-16 Finish Hex Nuts 18-8 / 304 Stainless Steel
3/8-16 Finish Hex Nuts 18-8 / 304 Stainless Steel
  • SOLD BY BAG OF 10.
  • 3/8"-16 Coarse Thread Hex Nut,
  • 9/16" Flats-Wrench Size, 21/64" Thickness.
  • Made From 18-8 / 304 Stainless Steel.
  • Contact Our Sales Department For Bulk Pricing.
Special Pricing Available
$2.00

NILS3/8-16BAG10
3/8-16 Nylon Insert Hex Lock Nuts 18-8 Stainless Steel
3/8-16 Nylon Insert Hex Lock Nuts 18-8 Stainless Steel
  • SOLD BY BAG OF 10.
  • 3/8"-16 Thread Nyloc Lock Nut
  • 9/16" Wrench Size.
  • Made From 18-8 / 304 Stainless Steel.
  • Contact Our Sales Department For Bulk Pricing.
Special Pricing Available
$3.25

NHCOUP3/8-16
3/8-16 Coupling Extention Nuts 18-8 / 304 Stainless Steel
3/8-16 Coupling Extention Nuts 18-8 / 304 Stainless Steel
  • SOLD BY THE PIECE.
  • Made From 18-8 / 304 Stainless Steel.
  • 1/2" Wrench Size
  • Length: 1-1/8"
  • Contact Our Sales Department For Bulk Pricing.
$1.50

SKT3/8
3/8-16 Toggle Bolt Stainless Steel
3/8-16 Toggle Bolt Stainless Steel
    1. SOLD BY THE PIECE.
    2. FOR 3/8-16 Diameter Fasteners
    3. 304 Stainless Steel
    4. SNAPTOGGLE Heavy-Duty Toggle Bolts
    5. Toggle Bolts in Stainless Steel are excellent for blind fastening in many applications.
    6. Contact our sales department for additonal information and bulk pricing.
$5.50

NILST3/8-16BAG10
3/8-16 THIN Nylon Insert Hex Jam Lock Nuts 18-8 / 304 Stainless Steel
3/8-16 THIN Nylon Insert Hex Jam Lock Nuts 18-8 / 304 Stainless Steel
  • SOLD BY BAG OF 10.
  • Flats 0.563" Height 0.281"
  • 18-8 / 304 Grade Stainless Steel.
  • Contact Our Sales Department For Bulk Pricing.
Special Pricing Available
$5.00

NALLMTLJAM3/8-16
3/8-16 All Metal Jam Lock Nut Side Staked 304 Stainless Steel.
3/8-16 All Metal Jam Lock Nut Side Staked 304 Stainless Steel.
  • SOLD BY THE PIECE.
  • Hex Centerlock All Metal Thin Jam Lock Nuts.
  • 18-8 / 304 Stainless Steel.
  • Contact Our Sales Department For Bulk Pricing.
$0.25

WFDSHD3/8X125
3/8
3/8" x 1-1/4" Fender Washers HEAVY DUTY 1/8 Thick 18-8 Stainless Steel
  • SOLD BY THE PIECE
  • These Fender Washers Are Thicker Then The Standards.
  • Made From 18-8 / 304 Stainless Steel.
  • Thickness: .125 (1/8")
$0.30

NHSCAP3/8-16BAG10
3/8-16 Hex Acorn Cap Nuts 18-8 / 304 Stainless Steel
3/8-16 Hex Acorn Cap Nuts 18-8 / 304 Stainless Steel
  • SOLD BY BAG OF 10.
  • 5/8" Wrench Size.
  • 5/8" Height Overall.
  • Made From 18-8 / 304 Stainless Steel.
  • Contact Our Sales Department For Bulk Pricing.
Special Pricing Available
$6.50

NWING3/8-16BAG10
3/8-16 Wing Nuts 18-8 / 304 Stainless Steel
3/8-16 Wing Nuts 18-8 / 304 Stainless Steel
  • SOLD BY BAG OF 10.
  • 18-8 / 304 Stainless Steel.
  • Wing Nut Span = 1.50"
  • Contact Our Sales Department For Bulk Pricing.
Special Pricing Available
$5.00

NKLOCK3/8-16BAG25
3/8-16 Hex Kep K-Lock Nuts 18-8 / 304 Stainless Steel Keps
3/8-16 Hex Kep K-Lock Nuts 18-8 / 304 Stainless Steel Keps
  • SOLD BY BAG OF 25.
  • 7/16" Wrench Size.
  • 18-8 / 304 Grade Stainless Steel
  • Contact Our Sales Department For Bulk Pricing.
Special Pricing Available
$9.25

NHFLG3/8-16BAG25
3/8-16 Hex Serrated Flange Nuts 18-8 / 304 Stainless Steel
3/8-16 Hex Serrated Flange Nuts 18-8 / 304 Stainless Steel
  • SOLD BY BAG OF 25.
  • 18-8 / 304 Grade Stainless Steel.
  • Max Width Across Flats = .562
  • Contact Our Sales Department For Bulk Pricing.
$8.25

NJS3/8-16BAG25
3/8-16 Thin Hex Jam Nuts 18-8 / 304 Stainless Steel
3/8-16 Thin Hex Jam Nuts 18-8 / 304 Stainless Steel
  • SOLD BY BAG OF 25.
  • 9/16" Wrench Size
  • Thickness: 7/32"
  • Contact Our Sales Department For Bulk Pricing
Special Pricing Available
$5.25

NHHS3/8-16BAG10
3/8-16 Heavy Hex Finish Nuts 18-8 / 304 Stainless Steel
3/8-16 Heavy Hex Finish Nuts 18-8 / 304 Stainless Steel
  • SOLD BY BAG OF 10.
  • Extra Thick Hex Finish Nuts
  • Flats 11/16" Height 23/64"
  • Made From 18-8 / 304 Stainless Steel.
  • Contact Our Sales Department For Bulk Pricing.
Special Pricing Available
$5.25

NILSDOM3/8-16BAG10
3/8-16 Lock Nuts Purple Insert - Waxed 18-8 / 304 Stainless Steel
3/8-16 Lock Nuts Purple Insert - Waxed 18-8 / 304 Stainless Steel
  • SOLD BY BAG OF 10.
  • 18-8 / 304 Grade Stainlesss Steel
  • Waxed Lock Nut to Prevent Galling
  • 9/16" Wrench Size
  • Contact Our Sales Department for Bulk and Wholesale Pricing
Special Pricing Available
$5.25

WLS3/8BAG50
3/8
3/8" Split Lock Washers 18-8 / 304 Stainless Steel
  • SOLD BY BAG OF 50.
  • Medium Profile Split Ring Lock Washers.
  • Made From 18-8 / 304 Stainless Steel.
  • ID 0.377" OD 0.680" Thickness 0.078" 
  • CONTACT OUR SALES DEPARTMENT FOR BULK PRICING.
Special Pricing Available
$6.50

WFSL3/8BAG25
3/8
3/8" x 1" Large OD Flat Washer 18-8 / 304 Stainless Steel
  • SOLD BY BAG OF 25.
  • Made From 18-8 / 304 Stainless Steel.
  • 1" OD.
  • CONTACT OUR SALES DEPARTMENT FOR BULK PRICING.
Special Pricing Available
$3.50

WFIS3/8BAG25
3/8
3/8" Cup Finishing Washers 18-8 / 304 Stainless Steel
  • SOLD BY BAG OF 25.
  • 18-8 / 304 Stainless Steel For Corrosion Resistance
  • ID: .467"
  • OD: .925"
  • Thickness: .250"
Special Pricing Available
$7.50

WINLW3/8BAG25
3/8
3/8" Internal Tooth Lock Washers 410 Stainless Steel
  • SOLD BY BAG OF 25.
  • 410 Grade Stainless Steel.
  • Serrated INTERNAL Tooth Star Washers. 
  • Please Contact Our Sales Department For Bulk Pricing.
Special Pricing Available
$8.25

WEXLW3/8BAG25
3/8
3/8" External Tooth Lock Washers 410 Stainless Steel
  • SOLD BY BAG OF 25.
  • 410 Grade Stainless Steel.
  • Serrated EXTERNAL Tooth Star Washers. 
  • Please Contact Our Sales Department For Bulk Pricing.
Special Pricing Available
$6.00

WNPW3/8BAG25
3/8
3/8" Neoprene Bonded Sealing Washers 18-8 / 304 Stainless Steel
  • SOLD BY BAG OF 25.
  • 18-8 / 304 Stainless Steel.
  • Neoprene Backed EPDM Rubber Seal Washer
  • OD: .875"
  • Please Contact Our Sales Department For Bulk Pricing.
Special Pricing Available
$8.00

WAN3/8-616BAG25
3/8
3/8" AN Flat Washers 900 Series 18-8 / 304 Stainless Steel
  • SOLD BY THE BAG OF 25
  • 18-8 / 304 Stainless Steel
  • ID: .390
  • OD: .625
  • Thickness: 1/16"
  • AN960C616
Special Pricing Available
$4.50

WSAE3/8-814BAG25
3/8
3/8" SAE Flat Washers 18-8 / 304 Stainless Steel
  • SOLD BY THE BAG OF 25
  • 18-8 Stainless Steel
  • ID: .406
  • OD:  .812
  • Thickness: .051 - .080
  • SAE 15795-814
Special Pricing Available
$7.25

WFDS3/8X125BAG10
3/8
3/8" x 1-1/4" Fender Washers 18-8 / 304 Stainless Steel
  • SOLD BY BAG OF 10.
  • Large OD Flat Fender Washers
  • Made From 18-8 / 304 Stainless Steel
  • Thickness: .050
  • CONTACT OUR SALES DEPARTMENT FOR BULK PRICING.
Special Pricing Available
$3.25

WFDS3/8X150BAG10
3/8
3/8" x 1-1/2" Fender Washers 18-8 / 304 Stainless Steel
  • SOLD BY BAG OF 10.
  • Large OD Flat Fender Washers
  • Made From 18-8 / 304 Stainless Steel
  • Thickness: .062
  • CONTACT OUR SALES DEPARTMENT FOR BULK PRICING.
Special Pricing Available
$3.25

WFDS3/8X200BAG10
3/8
3/8" x 2" Fender Washers 18-8 / 304 Stainless Steel
  • SOLD BY BAG OF 10.
  • Large OD Flat Fender Washers
  • Made From 18-8 / 304 Stainless Steel
  • Thickness: .062
  • CONTACT OUR SALES DEPARTMENT FOR BULK PRICING.
Special Pricing Available
$4.25