5/16-18 Phillips Flat Head Machine Screw 18-8 Stainless Steel"

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

Diameter - Thread Pitch: 5/16"-18


  • 18-8 Stainless steel includes 303 and 304 stainless steel
  • A machine screw is commonly identified by its small size
  • Considered the fastener industry standard for stainless steel
  • Flat head screws are made to sit flush against their installed material
  • Corrosion and rust resistant
  • Excellent in applications exposed to fresh water or moisture

5/16"-18 Stainless steel Phillips flat head machine screws are available in 18-8 stainless steel.

Select Products Below See Product Specifications

NA = "Not Sold In Single Quantity"

Size
Select Package Quantity
SubTotal
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 1/2"
SKU #2400002
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 1/2"
SKU #2400002
1
NA
25
$11.00 (0.44/ea)
100
$35.00 (0.35/ea)
1000
$300.00 (0.3/ea)
Subtotal: $0.00 /
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 5/8"
SKU #2400012
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 5/8"
SKU #2400012
1
NA
25
$11.25 (0.45/ea)
100
$36.00 (0.36/ea)
1000
$310.00 (0.31/ea)
Subtotal: $0.00 /
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 3/4"
SKU #2400022
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 3/4"
SKU #2400022
1
NA
25
$12.00 (0.48/ea)
100
$38.00 (0.38/ea)
1000
$330.00 (0.33/ea)
Subtotal: $0.00 /
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 1"
SKU #2400032
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 1"
SKU #2400032
1
NA
25
$13.00 (0.52/ea)
100
$40.00 (0.4/ea)
1000
$350.00 (0.35/ea)
Subtotal: $0.00 /
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 1-1/4"
SKU #2400042
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 1-1/4"
SKU #2400042
1
NA
25
$13.50 (0.54/ea)
100
$41.00 (0.41/ea)
1000
$360.00 (0.36/ea)
Subtotal: $0.00 /
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 1-1/2"
SKU #2400052
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 1-1/2"
SKU #2400052
1
NA
25
$13.75 (0.55/ea)
100
$42.00 (0.42/ea)
1000
$360.00 (0.36/ea)
Subtotal: $0.00 /
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 1-3/4"
SKU #2400062
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 1-3/4"
SKU #2400062
1
NA
25
$17.50 (0.7/ea)
100
$54.00 (0.54/ea)
1000
$470.00 (0.47/ea)
Subtotal: $0.00 /
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 2"
SKU #2400072
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 2"
SKU #2400072
1
$0.82 (0.82/ea)
25
$18.25 (0.73/ea)
100
$57.00 (0.57/ea)
1000
$500.00 (0.5/ea)
Subtotal: $0.00 /
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 2-1/4"
SKU #2400082
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 2-1/4"
SKU #2400082
1
$1.01 (1.01/ea)
25
$22.50 (0.9/ea)
100
$69.00 (0.69/ea)
1000
$600.00 (0.6/ea)
Subtotal: $0.00 /
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 2-1/2"
SKU #2400092
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 2-1/2"
SKU #2400092
1
$1.04 (1.04/ea)
25
$23.25 (0.93/ea)
100
$75.00 (0.75/ea)
1000
$660.00 (0.66/ea)
Subtotal: $0.00 /
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 3"
SKU #2400102
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 3"
SKU #2400102
1
$1.14 (1.14/ea)
25
$25.50 (1.02/ea)
100
$89.00 (0.89/ea)
1000
$780.00 (0.78/ea)
Subtotal: $0.00 /
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 3-1/2"
SKU #2400112
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 3-1/2"
SKU #2400112
1
$1.55 (1.55/ea)
25
$34.75 (1.39/ea)
100
$119.00 (1.19/ea)
1000
$1,040.00 (1.04/ea)
Subtotal: $0.00 /
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 4"
SKU #2400122
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 4"
SKU #2400122
1
$1.86 (1.86/ea)
25
$41.75 (1.67/ea)
100
$143.00 (1.43/ea)
1000
$1,250.00 (1.25/ea)
Subtotal: $0.00 /
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 5"
SKU #2400132
Phillips Flat Head Machine Screw 18-8 SS - 5/16"-18 x 5"
SKU #2400132
1
$3.10 (3.1/ea)
25
$69.75 (2.79/ea)
100
$234.00 (2.34/ea)
1000
$2,040.00 (2.04/ea)
Subtotal: $0.00 /

Frequently Used With

1
NA
25
$2.00 (0.08/ea)
100
$6.00 (0.06/ea)
1000
$40.00 (0.04/ea)
Subtotal: $0.00 /
1
NA
25
$2.25 (0.09/ea)
100
$7.00 (0.07/ea)
1000
$60.00 (0.06/ea)
Subtotal: $0.00 /

Product Specifications
ANSI
ANSI B18.6.3
Class
2A
Color
Silver
Corrosion Resistant
Yes
Countersink
82 Degree
Diameter
5/16"
Drive Style
Phillips
Fit
Class 2A
Grade
18-8
Head Diameter
Max 0.635 - Min 0.568
Head Height Max
0.191
Head Style
Flat
Material
Stainless Steel
Overall Head Height
Max 0.191 - Min 0.165
Phillips Drive
#4
Product Type
Machine Screws
Standards Met
ANSI B18.6.3
System of Measurement (Unit)
Inch
Thread Direction
Right Hand
Thread Pitch (Count)
18 Per Inch
Thread Standard
UNC
Thread Type
Coarse
Tolerance (IFI)
Actual measurements may vary slightly +/- depending on production run within IFI Tolerances