< 3/8-16 Stainless Steel Oval Head Machine Screws - Marsh Fasteners
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3/8-16 Stainless Steel Phillips Oval Head Machine Screws

  • 18-8 Stainless Steel Includes 303 & 304 Grades
  • 3/8"-16 Right Hand Thread, UNC 
  • Fully Threaded For Use With A Pre Tapped Hole Or Matching Hex Nut.
  • Rust and Corrosion Resistant
  • Oval Head Machine Screws Have a Countersunk Head with a Raised Dome Top.
  • Standards: ANSI B18.6.3
  • Please View Matching Nuts & Washers Below.


Item # Image Description Price
OHMSX3/816X100BAG10
3/8-16 x 1 Phillips Oval Head Machine Screws Stainless Steel
3/8-16 x 1 Phillips Oval 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!
$11.25

OHMSX3/816X125BAG10
3/8-16 x 1-1/4 Phillips Oval Head Machine Screws Stainless Steel
3/8-16 x 1-1/4 Phillips Oval 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!
$12.25

OHMSX3/816X150BAG10
3/8-16 x 1-1/2 Phillips Oval Head Machine Screws Stainless Steel
3/8-16 x 1-1/2 Phillips Oval 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!
$12.75

OHMSX3/816X200BAG10
3/8-16 x 2 Phillips Oval Head Machine Screws Stainless Steel
3/8-16 x 2 Phillips Oval 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!
$13.50

OHMSX3/816X250BAG10
3/8-16 x 2-1/2 Phillips Oval Head Machine Screws Stainless Steel
3/8-16 x 2-1/2 Phillips Oval 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!
$14.50

OHMSX3/816X300BAG10
3/8-16 x 3 Phillips Oval Head Machine Screws Stainless Steel
3/8-16 x 3 Phillips Oval 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!
$15.75

OHMSX3/816X350
3/8-16 x 3 1/2 Oval Phil MS 18-8 Stainless
3/8-16 x 3 1/2 Oval Phil MS 18-8 Stainless
  • 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!
$2.50

OHMSX3/816X400
3/8-16 x 4 Phillips Oval Head Machine Screws Stainless Steel
3/8-16 x 4 Phillips Oval 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!
$2.95

NHS3/8-16
3/8-16 Finish Hex Nuts 18-8 / 304 Stainless Steel
3/8-16 Finish Hex Nuts 18-8 / 304 Stainless Steel
  • SOLD BY THE PIECE.
  • 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.
$0.15

NILS3/8-16
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 THE PIECE.
  • 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.
$0.20

NHSCAP3/8-16
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 THE PIECE.
  • 5/8" Wrench Size.
  • 5/8" Height Overall.
  • Made From 18-8 / 304 Stainless Steel.
  • Contact Our Sales Department For Bulk Pricing.
$0.35

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

NWING3/8-16
3/8-16 Wing Nuts 18-8 / 304 Stainless Steel
3/8-16 Wing Nuts 18-8 / 304 Stainless Steel
  • SOLD BY THE PIECE.
  • 18-8 / 304 Stainless Steel.
  • Wing Nut Span = 1.50"
  • Contact Our Sales Department For Bulk Pricing.
$0.40

NKLOCK3/8-16
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 THE PIECE.
  • 7/16" Wrench Size.
  • 18-8 / 304 Grade Stainless Steel
  • Contact Our Sales Department For Bulk Pricing.
$0.30

NHFLG3/8-16
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 THE PIECE.
  • 18-8 / 304 Grade Stainless Steel.
  • Max Width Across Flats = .562
  • Contact Our Sales Department For Bulk Pricing.
$0.28

NJS3/8-16
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 THE PIECE.
  • 9/16" Wrench Size
  • Thickness: 7/32"
  • Contact Our Sales Department For Bulk Pricing
Special Pricing Available
$0.12

NILST3/8-16
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 THE PIECE.
  • Flats 0.563" Height 0.281"
  • 18-8 / 304 Grade Stainless Steel.
  • Contact Our Sales Department For Bulk Pricing.
$0.15

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

NHHS3/8-16
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 THE PIECE.
  • 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.
$0.30

NILSDOM3/8-16
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 The Piece
  • 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
$0.30

WFS3/8
3/8
3/8" Flat Washers 18-8 / 304 Stainless Steel
  • SOLD BY THE PIECE.
  • 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
$0.09

WLS3/8
3/8
3/8" Split Lock Washers 18-8 / 304 Stainless Steel
  • SOLD BY THE PIECE.
  • 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.
$0.08

WFDS3/8X125
3/8
3/8" x 1-1/4" Fender Washers 18-8 / 304 Stainless Steel
  • SOLD BY THE PIECE.
  • Large OD Flat Fender Washers
  • Made From 18-8 / 304 Stainless Steel
  • Thickness: .050
  • CONTACT OUR SALES DEPARTMENT FOR BULK PRICING.
$0.15

WFDS3/8X150
3/8
3/8" x 1-1/2" Fender Washers 18-8 / 304 Stainless Steel
  • SOLD BY THE PIECE.
  • Large OD Flat Fender Washers
  • Made From 18-8 / 304 Stainless Steel
  • Thickness: .062
  • CONTACT OUR SALES DEPARTMENT FOR BULK PRICING.
$0.20

WFSL3/8
3/8
3/8" x 1" Large OD Flat Washer 18-8 / 304 Stainless Steel
  • SOLD BY THE PIECE.
  • Made From 18-8 / 304 Stainless Steel.
  • 1" OD.
  • CONTACT OUR SALES DEPARTMENT FOR BULK PRICING.
$0.10

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")
$1.75

WFIS3/8
3/8
3/8" Cup Finishing Washers 18-8 / 304 Stainless Steel
  • SOLD BY THE PIECE
  • 18-8 / 304 Stainless Steel For Corrosion Resistance
  • ID: .467"
  • OD: .925"
  • Thickness: .250"
$0.16

WINLW3/8
3/8
3/8" Internal Tooth Lock Washers 410 Stainless Steel
  • SOLD BY THE PIECE.
  • 410 Grade Stainless Steel.
  • Serrated INTERNAL Tooth Star Washers. 
  • Please Contact Our Sales Department For Bulk Pricing.
$0.10

WEXLW3/8
3/8
3/8" External Tooth Lock Washers 410 Stainless Steel
  • SOLD BY THE PIECE.
  • 410 Grade Stainless Steel.
  • Serrated EXTERNAL Tooth Star Washers. 
  • Please Contact Our Sales Department For Bulk Pricing.
$0.15

WNPW3/8
3/8
3/8" Neoprene Bonded Sealing Washers 18-8 / 304 Stainless Steel
  • SOLD BY THE PIECE.
  • 18-8 / 304 Stainless Steel.
  • Neoprene Backed EPDM Rubber Seal Washer
  • OD: .875"
  • Please Contact Our Sales Department For Bulk Pricing.
$0.20

WAN3/8-616
3/8
3/8" AN Flat Washers 900 Series 18-8 / 304 Stainless Steel
  • SOLD BY THE PIECE
  • 18-8 / 304 Stainless Steel
  • ID: .390
  • OD: .625
  • Thickness: 1/16"
  • AN960C616
$0.07

WSAE3/8-814
3/8
3/8" SAE Flat Washers 18-8 / 304 Stainless Steel
  • SOLD BY THE PIECE
  • 18-8 Stainless Steel
  • ID: .406
  • OD:  .812
  • Thickness: .051 - .080
  • SAE 15795-814
$0.09

WFDS3/8X200
3/8
3/8" x 2" Fender Washers 18-8 / 304 Stainless Steel
  • SOLD BY THE PIECE.
  • Large OD Flat Fender Washers
  • Made From 18-8 / 304 Stainless Steel
  • Thickness: .062
  • CONTACT OUR SALES DEPARTMENT FOR BULK PRICING.
$0.40

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.
$4.50