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5/16-18 Phillips Flat Head Machine Screws 316 Stainless Steel

  • These 5/16"-18 Flat Head Machine Screws in Type 316 Stainless Steel are Used Widely in the Marine and Other Industries Where a COUNTERSUNK Application is Required.
  • Made From Type 316 Stainless Steel, These are Excellent Where Corrosion Resistance is Needed and is More Durable and a Higher Quality Than the 18-8 Stainless Steel.
  • 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
FH316MSX5/1618X150
5/16-18 x 1-1/2
5/16-18 x 1-1/2" Phillips Flat Head Machine Screws 316 Stainless Steel
  • SOLD BY THE PIECE
  • #4 Phillips Drive
  • 5/16-18 Thread Pitch
  • 316 Marine Grade Stainless Steel.
  • Contact our Sales Department for Bulk Pricing.
$1.15

FH316MSX5/1618X200
5/16-18 x 2
5/16-18 x 2" Phillips Flat Head Machine Screws 316 Stainless Steel
  • SOLD BY THE PIECE
  • #4 Phillips Drive
  • 5/16-18 Thread Pitch
  • 316 Marine Grade Stainless Steel.
  • Contact our Sales Department for Bulk Pricing.
$1.55

FH316MSX5/1618X250
5/16-18 x 2-1/2
5/16-18 x 2-1/2" Phillips Flat Head Machine Screws 316 Stainless Steel
  • SOLD BY THE PIECE
  • #4 Phillips Drive
  • 5/16-18 Thread Pitch
  • 316 Marine Grade Stainless Steel.
  • Contact our Sales Department for Bulk Pricing.
$1.65

FH316MSX5/1618X300
5/16-18 x 3
5/16-18 x 3" Phillips Flat Head Machine Screws 316 Stainless Steel
  • SOLD BY THE PIECE
  • #4 Phillips Drive
  • 5/16-18 Thread Pitch
  • 316 Marine Grade Stainless Steel.
  • Contact our Sales Department for Bulk Pricing.
$1.65

WFTS5/16BAG
5/16 Flat Washer 316 Stainless
5/16 Flat Washer 316 Stainless
  1. SOLD IN BOXES OF 100.
  2. 3/4" OD.
  3. .050 Thickness
  4. 316 STAINLESS STEEL.
  5. CONTACT OUR SALES DEPARTMENT FOR BULK PRICING.
Special Pricing Available
$8.00

NHST5/16-18BAG25
5/16-18 Finish Hex Nut 316 Stainless
5/16-18 Finish Hex Nut 316 Stainless
  1. SOLD BY BAG OF 25..
  2. 1/2" WRENCH SIZE.
  3. 17/64" Thickness
  4. 316 STAINLESS STEEL
  5. CONTACT OUR SALES DEPARTMENT FOR BULK PRICING.
Special Pricing Available
$3.50

NLST5/16-18BAG25
5/16-18 Nylon Insert Lock Nuts 316 Stainless
5/16-18 Nylon Insert Lock Nuts 316 Stainless
  1. SOLD BY BAG OF 25..
  2. 316 STAINLESS STEEL
  3. CONTACT OUR SALES DEPARTMENT FOR BULK PRICING.
Special Pricing Available
$5.25

NHSTCAP5/16-18BAG10
5/16-18 Hex Cap Nut 316 Stainless
5/16-18 Hex Cap Nut 316 Stainless
  1. SOLD BY BAG OF 10..
  2. 316 STAINLESS STEEL
  3. CONTACT OUR SALES DEPARTMENT FOR BULK PRICING.
Special Pricing Available
$13.25

NHHST5/16-18BAG25
5/16-18 Heavy Hex Finish Nuts 316 Stainless Steel
5/16-18 Heavy Hex Finish Nuts 316 Stainless Steel
  • SOLD BY BAG OF 25.
  • Extra Thick Hex Finish Nuts
  • Flats 9/16" Height 19/64"
  • Marine Grade 316 Stainless Steel.
  • Contact Our Sales Department For Bulk Pricing.
$8.25

WLTS5/16BAG
5/16 Lock Washers 316 Stainless
5/16 Lock Washers 316 Stainless
  1. SOLD IN BOXES OF 100.
  2. 316 STAINLESS STEEL.
  3. CONTACT OUR SALES DEPARTMENT FOR BULK PRICING.
Special Pricing Available
$7.25

WFDTS5/16X125BAG25
5/16 x 1 1/4 Fender Washer Type 316 Stainless
5/16 x 1 1/4 Fender Washer Type 316 Stainless
  1. SOLD BY BAG OF 25.
  2. 1 1/4" OD
  3. .050 Thickness
  4. 316 STAINLESS STEEL.
  5. CONTACT OUR SALES DEPARTMENT FOR BULK PRICING.
Special Pricing Available
$6.50

WFDTS5/16X150BAG25
5/16 x 1 1/2 Fender Washer Type 316 Stainless
5/16 x 1 1/2 Fender Washer Type 316 Stainless
  1. SOLD BY BAG OF 25.
  2. 1 1/2" OD
  3. .062 Thickness
  4. 316 STAINLESS STEEL.
  5. CONTACT OUR SALES DEPARTMENT FOR BULK PRICING.
Special Pricing Available
$7.50

WSAET5/16BAG25
5/16 SAE Flat Washer 316 Stainless, 15795-812
5/16 SAE Flat Washer 316 Stainless, 15795-812
  1. SOLD BY BAG OF 25.
  2. 316 Stainless Steel
  3. ID: .343
  4. OD:  .687
  5. Thickness: .051 - .080
  6. SAE 15795-812
Special Pricing Available
$7.00