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1/2-13 Stainless Steel Slotted Flat Head Machine Screws

  • 18-8 Stainless Steel Includes 303 & 304 Grades
  • 1/2"-13 Right Hand Thread, UNC 
  • Fully Threaded For Use With A Pre Tapped Hole Or Matching Hex Nut.
  • Rust and Corrosion Resistant
  • Slot Head Machine Screws Sit Flush Once Installed
  • Standards: ANSI B18.6.3
  • Please View Matching Nuts & Washers Below.


Item # Image Description Price
FHMS1/2-13X.75BAG10
1/2-13 x 3/4 Slotted Flat Head Machine Screws Stainless Steel
1/2-13 x 3/4 Slotted Flat Head Machine Screws Stainless Steel
  • SOLD BY BAG OF 10.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 1/2"-13
  • Fully Threaded
  • Slotted Drive Head
  • Contact Our Sales Department For Buld Pricing!
$15.00

FHMS1/2-13X10BAG10
1/2-13 x 1 Slotted Flat Head Machine Screws Stainless Steel
1/2-13 x 1 Slotted Flat Head Machine Screws Stainless Steel
  • SOLD BY BAG OF 10.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 1/2"-13
  • Fully Threaded
  • Slotted Drive Head
  • Contact Our Sales Department For Buld Pricing!
$16.75

FHMS1/2-13X15BAG10
1/2-13 x 1-1/2 Slotted Flat Head Machine Screws Stainless Steel
1/2-13 x 1-1/2 Slotted Flat Head Machine Screws Stainless Steel
  • SOLD BY BAG OF 10.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 1/2"-13
  • Fully Threaded
  • Slotted Drive Head
  • Contact Our Sales Department For Buld Pricing!
$17.75

FHMS1/2-13X175BAG10
1/2-13 x 1-3/4 Slotted Flat Head Machine Screws Stainless Steel
1/2-13 x 1-3/4 Slotted Flat Head Machine Screws Stainless Steel
  • SOLD BY BAG OF 10.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 1/2"-13
  • Fully Threaded
  • Slotted Drive Head
  • Contact Our Sales Department For Buld Pricing!
$18.75

FHMS1/2-13X20
1/2-13 x 2 Slotted Flat Head Machine Screws Stainless Steel
1/2-13 x 2 Slotted Flat Head Machine Screws Stainless Steel
  • SOLD BY THE PEICE.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 1/2"-13
  • Fully Threaded
  • Slotted Drive Head
  • Contact Our Sales Department For Buld Pricing!
$2.00

FHMS1/2-13X25
1/2-13 x 2-1/2 Slotted Flat Head Machine Screws Stainless Steel
1/2-13 x 2-1/2 Slotted Flat Head Machine Screws Stainless Steel
  • SOLD BY THE PEICE.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 1/2"-13
  • Fully Threaded
  • Slotted Drive Head
  • Contact Our Sales Department For Buld Pricing!
$3.00

FHMS1/2-13X30
1/2-13 x 3 Slotted Flat Head Machine Screws Stainless Steel
1/2-13 x 3 Slotted Flat Head Machine Screws Stainless Steel
  • SOLD BY THE PEICE.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 1/2"-13
  • Fully Threaded
  • Slotted Drive Head
  • Contact Our Sales Department For Buld Pricing!
$4.00

FHMS1/2-13X35
1/2-13 x 3-1/2 Slotted Flat Head Machine Screws Stainless Steel
1/2-13 x 3-1/2 Slotted Flat Head Machine Screws Stainless Steel
  • SOLD BY THE PEICE.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 1/2"-13
  • Fully Threaded
  • Slotted Drive Head
  • Contact Our Sales Department For Buld Pricing!
$5.00

FHMS1/2-13X40
1/2-13 x 4 Slotted Flat Head Machine Screws Stainless Steel
1/2-13 x 4 Slotted Flat Head Machine Screws Stainless Steel
  • SOLD BY THE PEICE.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 1/2"-13
  • Fully Threaded
  • Slotted Drive Head
  • Contact Our Sales Department For Buld Pricing!
$6.00

FHMS1/2-13X45
1/2-13 x 4-1/2 Slotted Flat Head Machine Screws Stainless Steel
1/2-13 x 4-1/2 Slotted Flat Head Machine Screws Stainless Steel
  • SOLD BY THE PEICE.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 1/2"-13
  • Fully Threaded
  • Slotted Drive Head
  • Contact Our Sales Department For Buld Pricing!
$6.50

FHMS1/2-13X50
1/2-13 x 5 Slotted Flat Head Machine Screws Stainless Steel
1/2-13 x 5 Slotted Flat Head Machine Screws Stainless Steel
  • SOLD BY THE PEICE.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 1/2"-13
  • Fully Threaded
  • Slotted Drive Head
  • Contact Our Sales Department For Buld Pricing!
$7.00

FHMS1/2-13X60
1/2-13 x 6 Slotted Flat Head Machine Screws Stainless Steel
1/2-13 x 6 Slotted Flat Head Machine Screws Stainless Steel
  • SOLD BY THE PEICE.
  • 18-8 / 304 Stainless Steel
  • Diameter - Thread Pitch: 1/2"-13
  • Fully Threaded
  • Slotted Drive Head
  • Contact Our Sales Department For Buld Pricing!
$9.00

WFS1/2BAG25
1/2
1/2" Flat Washers 18-8 / 304 Stainless Steel
  • SOLD BY THE BAG OF 25
  • 1/2" Standard Commercial Pattern Round Flat Washers.
  • Made From 18-8 / 304 Stainless Steel
  • ID 0.531" OD 1-1/4" Thickness 0.062"
  • CONTACT OUR SALES DEPARTMENT FOR BULK PRICING. 
Special Pricing Available
$5.75

NHCOUP1/2-13
1/2-13 Coupling Extention Nuts 18-8 / 304 Stainless Steel
1/2-13 Coupling Extention Nuts 18-8 / 304 Stainless Steel
  • SOLD BY THE PIECE.
  • Made From 18-8 / 304 Stainless Steel.
  • 5/8" Wrench Size
  • Length: 1-1/4"
  • Contact Our Sales Department For Bulk Pricing.
Special Pricing Available
$2.25

NWING1/2-13
1/2-13 Wing Nuts 18-8 / 304 Stainless Steel
1/2-13 Wing Nuts 18-8 / 304 Stainless Steel
  • SOLD BY THE PIECE.
  • 18-8 / 304 Stainless Steel.
  • Wing Nut Span = 1.94"
  • Contact Our Sales Department For Bulk Pricing.
Special Pricing Available
$1.25

SKT1/2-13
1/2-13 Toggle Bolt Stainless Steel
1/2-13 Toggle Bolt Stainless Steel
  1. SOLD BY THE PIECE.
  2. FOR 1/2-13 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.
$7.85

NALLMTLJAM1/2-13
1/2-13 All Metal Jam Lock Nut Side Staked 304 Stainless Steel.
1/2-13 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.
$0.95

NHHS1/2-13
1/2-13 Heavy Hex Finish Nuts 18-8 / 304 Stainless Steel
1/2-13 Heavy Hex Finish Nuts 18-8 / 304 Stainless Steel
  • SOLD BY THE PIECE.
  • Extra Thick Hex Finish Nuts
  • Flats 7/8" Height 31/64"
  • Made From 18-8 / 304 Stainless Steel.
  • Contact Our Sales Department For Bulk Pricing.
Special Pricing Available
$1.25

NILSDOM1/2-13
1/2-13 Lock Nuts Purple Insert - Waxed 18-8 / 304 Stainless Steel
1/2-13 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 - Best for use on U-Bolts!
  • 3/4" Wrench Size
  • Contact Our Sales Department for Bulk and Wholesale Pricing
$0.75

WFDS1/2X200
1/2
1/2" 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.
Special Pricing Available
$0.45

WFDSHD1/2X200
1/2
1/2" x 2" 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")
$0.95

WNPW1/2
1/2
1/2" 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: 1.00"
  • Please Contact Our Sales Department For Bulk Pricing.
Special Pricing Available
$0.40

NILS1/2-13BAG10
1/2-13 Nylon Insert Hex Lock Nuts 18-8 Stainless Steel
1/2-13 Nylon Insert Hex Lock Nuts 18-8 Stainless Steel
  • SOLD BY BAG OF 10.
  • 1/2"-13 Thread Nyloc Lock Nut
  • 3/4" Wrench Size.
  • Made From 18-8 / 304 Stainless Steel.
  • Contact Our Sales Department For Bulk Pricing.
Special Pricing Available
$5.50

NILST1/2-13BAG10
1/2-13 THIN Nylon Insert Hex Jam Lock Nuts 18-8 / 304 Stainless Steel
1/2-13 THIN Nylon Insert Hex Jam Lock Nuts 18-8 / 304 Stainless Steel
  • SOLD BY BAG OF 10.
  • Flats 0.752" Height 0.328"
  • 18-8 / 304 Grade Stainless Steel.
  • Contact Our Sales Department For Bulk Pricing.
$8.25

NHSCAP1/2-13BAG5
1/2-13 Hex Acorn Cap Nuts 18-8 / 304 Stainless Steel
1/2-13 Hex Acorn Cap Nuts 18-8 / 304 Stainless Steel
  • SOLD BY BAG OF 5.
  • 3/4" Wrench Size.
  • 13/16" Height Overall.
  • Made From 18-8 / 304 Stainless Steel.
  • Contact Our Sales Department For Bulk Pricing.
$7.50

NHFLG1/2-13BAG10
1/2-13 Hex Serrated Flange Nuts 18-8 / 304 Stainless Steel
1/2-13 Hex Serrated Flange Nuts 18-8 / 304 Stainless Steel
  • SOLD BY BAG OF 10.
  • 18-8 / 304 Grade Stainless Steel.
  • Max Width Across Flats = .750
  • Contact Our Sales Department For Bulk Pricing.
Special Pricing Available
$7.50

WLS1/2BAG25
1/2
1/2" Split Lock Washers 18-8 / 304 Stainless Steel
  • SOLD BY BAG OF 25.
  • Medium Profile Split Ring Lock Washers.
  • Made From 18-8 / 304 Stainless Steel.
  • ID 0.502" OD 0.869" Thickness 0.125"
  • CONTACT OUR SALES DEPARTMENT FOR BULK PRICING.
Special Pricing Available
$5.50

WFDS1/2X150BAG10
1/2
1/2" 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
$3.50

WFDS1/2X200BAG10
1/2
1/2" 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
$4.75

WINLW1/2BAG25
1/2
1/2" 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

WEXLW1/2BAG25
1/2
1/2" 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
$6.25

WAN1/2-816BAG25
1/2
1/2" AN Flat Washers 900 Series 18-8 / 304 Stainless Steel
  • SOLD BY THE BAG OF 25
  • 18-8 / 304 Stainless Steel
  • ID: .516
  • OD: .876
  • Thickness: 1/16"
  • AN960C816
Special Pricing Available
$4.50

WSAE1/2-818BAG25
1/2
1/2" SAE Flat Washers 18-8 / 304 Stainless Steel
  • SOLD BY THE BAG OF 25
  • 18-8 / 304 Stainless Steel
  • ID: .531
  • OD:  1.062
  • Thickness: .074 - .121
  • SAE 15795-818
Special Pricing Available
$5.25

NALLMTLTOP1/2-13-316
1/2-13 All Metal Tri-Loc TOP Hex Lock Nuts 304 / 18-8 Stainless Steel
1/2-13 All Metal Tri-Loc TOP Hex Lock Nuts 304 / 18-8 Stainless Steel
  • SOLD BY THE PIECE.
  • Hex Tri-Loc TOP All Metal Hex Lock Nuts.
  • 18-8 / 304 Stainless Steel.
  • Contact Our Sales Department For Bulk Pricing.
$1.25