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5/16-18 Flat Socket Head Screw 316 Stainless Steel

5/16"-18 | 316 Stainless Steel Flat Head Socket Cap Screws

Screw Diameter - Thread Pitch: 5/16"-18

5/16"-18 Flat Head Socket Cap Screws are machine screws with a Hex drive style.

  • Countersunk bottom that runs flush with the installation surface
  • Cylindrical head
  • Hexagonal drive style
  • Fully threaded up to the countersink
  • Corrosion and rust resistant
  • Ideal for exterior or long lasting applications exposed to fresh water moisture
Head height is measured from the bottom of the countersink to the top of the head

Sizes Listed As:
Diameter - Thread Pitch x Length from Top of Head

This item qualifies for FREE SHIPPING on orders $250+
Select Products Below See Product Specifications
NA = "Not Sold In Single Quantity"

Size
Select Package Quantity
SubTotal
5/16"-18 x 3/8" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0030
5/16"-18 x 3/8" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0030
1
 $4.60 (4.6/ea)
25
 $113.25 (4.53/ea)
100
 $212.00 (2.12/ea)
1000
 $1,850.00 (1.85/ea)
Subtotal: $0.00 /
5/16"-18 x 1/2" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0032
5/16"-18 x 1/2" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0032
1
 $2.01 (2.01/ea)
25
 $48.75 (1.95/ea)
100
 $122.00 (1.22/ea)
1000
 $1,060.00 (1.06/ea)
Subtotal: $0.00 /
5/16"-18 x 5/8" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0034
5/16"-18 x 5/8" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0034
1
 $2.18 (2.18/ea)
25
 $53.00 (2.12/ea)
100
 $157.00 (1.57/ea)
1000
 $1,360.00 (1.36/ea)
Subtotal: $0.00 /
Flat Socket Head Screw 316 SS - 5/16"-18 x 3/4"
SKU #45200-0002
Flat Socket Head Screw 316 SS - 5/16"-18 x 3/4"
SKU #45200-0002
1
 $1.52 (1.52/ea)
25
 $34.50 (1.38/ea)
100
 $125.00 (1.25/ea)
1000
 $1,080.00 (1.08/ea)
Subtotal: $0.00 /
5/16"-18 x 7/8" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0036
5/16"-18 x 7/8" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0036
1
 $2.25 (2.25/ea)
25
 $54.75 (2.19/ea)
100
 $214.00 (2.14/ea)
1000
 $2,120.00 (2.12/ea)
Subtotal: $0.00 /
5/16"-18 x 1" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0012
5/16"-18 x 1" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0012
1
 $1.62 (1.62/ea)
25
 $36.75 (1.47/ea)
100
 $134.00 (1.34/ea)
1000
 $1,170.00 (1.17/ea)
Subtotal: $0.00 /
5/16"-18 x 1-1/4" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0014
5/16"-18 x 1-1/4" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0014
1
 $2.33 (2.33/ea)
25
 $53.00 (2.12/ea)
100
 $193.00 (1.93/ea)
1000
 $1,680.00 (1.68/ea)
Subtotal: $0.00 /
5/16"-18 x 1-1/2" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0016
5/16"-18 x 1-1/2" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0016
1
 $2.39 (2.39/ea)
25
 $54.25 (2.17/ea)
100
 $197.00 (1.97/ea)
1000
 $1,710.00 (1.71/ea)
Subtotal: $0.00 /
5/16"-18 x 2" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0018
5/16"-18 x 2" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0018
1
 $2.56 (2.56/ea)
25
 $58.25 (2.33/ea)
100
 $212.00 (2.12/ea)
1000
 $1,850.00 (1.85/ea)
Subtotal: $0.00 /
5/16"-18 x 2-1/4" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0020
5/16"-18 x 2-1/4" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0020
1
 $1.80 (1.8/ea)
25
 $43.75 (1.75/ea)
100
 $167.00 (1.67/ea)
1000
 $1,660.00 (1.66/ea)
Subtotal: $0.00 /
5/16"-18 x 2-1/2" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0022
5/16"-18 x 2-1/2" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0022
1
 $1.86 (1.86/ea)
25
 $45.00 (1.8/ea)
100
 $125.00 (1.25/ea)
1000
 $1,080.00 (1.08/ea)
Subtotal: $0.00 /
5/16"-18 x 3" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0024
5/16"-18 x 3" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0024
1
 $2.18 (2.18/ea)
25
 $53.00 (2.12/ea)
100
 $134.00 (1.34/ea)
1000
 $1,170.00 (1.17/ea)
Subtotal: $0.00 /
5/16"-18 x 3-1/2" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0026
5/16"-18 x 3-1/2" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0026
1
 $5.41 (5.41/ea)
25
 $134.25 (5.37/ea)
100
 $193.00 (1.93/ea)
1000
 $1,680.00 (1.68/ea)
Subtotal: $0.00 /
5/16"-18 x 4" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0028
5/16"-18 x 4" Flat Socket Head Screw 316 Stainless Steel
SKU #45200-0028
1
 $5.91 (5.91/ea)
25
 $146.00 (5.84/ea)
100
 $197.00 (1.97/ea)
1000
 $1,710.00 (1.71/ea)
Subtotal: $0.00 /

Frequently Used With

Hex Socket Head Power Bits - 3/16 - Length 2"
Hex Socket Head Power Bits - 3/16 - Length 2" 1050-800-0041
Hex Socket Head Power Bits - 3/16 - Length 2
1
 $3.15 (3.15/ea)
10
 $29.80 (2.98/ea)
25
 $72.75 (2.91/ea)
50
 $129.50 (2.59/ea)
Subtotal: $0.00 /
Hex Allen Key Long Arm 3/16" Black Alloy
Hex Allen Key Long Arm 3/16" Black Alloy 1055-10022-0002
Hex Allen Key Long Arm 3/16
1
 $0.66 (0.66/ea)
25
 $15.50 (0.62/ea)
100
 $57.00 (0.57/ea)
1000
 $520.00 (0.52/ea)
Subtotal: $0.00 /
Hex Allen Key Short Arm 3/16 Black Alloy
Hex Allen Key Short Arm 3/16 Black Alloy 1055-20022-0002
Hex Allen Key Short Arm 3/16 Black Alloy
1
 $0.77 (0.77/ea)
25
 $18.00 (0.72/ea)
100
 $66.00 (0.66/ea)
1000
 $600.00 (0.6/ea)
Subtotal: $0.00 /
Hex Finish Nuts 316 SS - 5/16"-18 (1/2" Flats x 17/64" Thick)
Hex Finish Nuts 316 SS - 5/16"-18 (1/2" Flats x 17/64" Thick) 10900022
Hex Finish Nuts 316 SS - 5/16
1
 NA
25
 $3.50 (0.14/ea)
100
 $10.00 (0.1/ea)
1000
 $80.00 (0.08/ea)
Subtotal: $0.00 /
Product Specifications
Color
Silver
Corrosion Resistant
Yes
Countersink
82 Degrees
Diameter
5/16"
Drive Style
Internal Hex (Allen)
Grade
316
Head Diameter
Max 0.656 - Min 0.600
Head Height Max
0.198
Head Style
Flat
Hex Drive
3/16"
Marine Grade
Yes
Material
Stainless Steel
Overall Head Height
Max 0.198 - Min 0.181
Product Type
Socket Cap Screws
Standards Met
ASTM F 835
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

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Volume Pricing: Buy in volume, get a discount. The larger the pack, the lower the cost per piece. Visit the New Site Features Page for additional details.