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Carriage Bolts 316 Stainless Steel 5/16-18"

5/16"-18 316 Stainless Steel Carriage Bolt

Diameter - Thread Pitch: 5/16-18

  • Square section grips into the part being fixed (typically wood)
  • Carriage bolts are threaded all the way down to the square section beneath the head
  • Prevents the bolt from turning when the nut is tightened
  • 316 Stainless steel is corrosion and rust resistant
  • 316 Stainless steel is considered the fastener industry standard

5/16"-18 Carriage bolts have a domed or countersunk head, and the shank is topped by a short square section under the head.

All Carriage Bolts over 6" in length are Partially Threaded

Diameter x Thread Pitch x Length from Under Head
FT: Fully Threaded
PT: Partially Threaded

Select Products Below See Product Specifications
NA = "Not Sold In Single Quantity"

Size/SKU
Select Package Quantity Price
SubTotal
5/16"-18 x 3/4" FT
SKU #6006-006-002
5/16"-18 x 3/4" FT
SKU #6006-006-002
1 $0.75 (0.75/ea)
100 $56.00 (0.56/ea)
1000 $510.00 (0.51/ea)
Subtotal: $0.00 /
5/16"-18 x 1" FT
SKU #6006-006-004
5/16"-18 x 1" FT
SKU #6006-006-004
1 $0.83 (0.83/ea)
100 $62.00 (0.62/ea)
1000 $560.00 (0.56/ea)
Subtotal: $0.00 /
5/16"-18 x 1-1/4" FT
SKU #6006-006-006
5/16"-18 x 1-1/4" FT
SKU #6006-006-006
1 $1.01 (1.01/ea)
100 $76.00 (0.76/ea)
1000 $690.00 (0.69/ea)
Subtotal: $0.00 /
5/16"-18 x 1-1/2" FT
SKU #6006-006-008
5/16"-18 x 1-1/2" FT
SKU #6006-006-008
1 $1.17 (1.17/ea)
100 $89.00 (0.89/ea)
1000 $800.00 (0.8/ea)
Subtotal: $0.00 /
5/16"-18 x 1-3/4" FT
SKU #6006-006-010
5/16"-18 x 1-3/4" FT
SKU #6006-006-010
1 $1.40 (1.4/ea)
100 $107.00 (1.07/ea)
1000 $970.00 (0.97/ea)
Subtotal: $0.00 /
5/16"-18 x 2" FT
SKU #6006-006-012
5/16"-18 x 2" FT
SKU #6006-006-012
1 $1.37 (1.37/ea)
100 $104.00 (1.04/ea)
1000 $940.00 (0.94/ea)
Subtotal: $0.00 /
5/16"-18 x 2-1/4" FT
SKU #6006-006-014
5/16"-18 x 2-1/4" FT
SKU #6006-006-014
1 $1.60 (1.6/ea)
100 $116.00 (1.16/ea)
1000 $1,040.00 (1.04/ea)
Subtotal: $0.00 /
5/16"-18 x 2-1/2" FT
SKU #6006-006-016
5/16"-18 x 2-1/2" FT
SKU #6006-006-016
1 $1.57 (1.57/ea)
100 $119.00 (1.19/ea)
1000 $1,070.00 (1.07/ea)
Subtotal: $0.00 /
5/16"-18 x 2-3/4" FT
SKU #6006-006-018
5/16"-18 x 2-3/4" FT
SKU #6006-006-018
1 $2.00 (2/ea)
100 $151.00 (1.51/ea)
1000 $1,350.00 (1.35/ea)
Subtotal: $0.00 /
5/16"-18 x 3" FT
SKU #6006-006-020
5/16"-18 x 3" FT
SKU #6006-006-020
1 $1.78 (1.78/ea)
100 $136.00 (1.36/ea)
1000 $1,220.00 (1.22/ea)
Subtotal: $0.00 /
5/16"-18 x 3-1/2" FT
SKU #6006-006-022
5/16"-18 x 3-1/2" FT
SKU #6006-006-022
1 $2.06 (2.06/ea)
100 $157.00 (1.57/ea)
1000 $1,410.00 (1.41/ea)
Subtotal: $0.00 /
5/16"-18 x 4" FT
SKU #6006-006-024
5/16"-18 x 4" FT
SKU #6006-006-024
1 $2.17 (2.17/ea)
100 $165.00 (1.65/ea)
1000 $1,490.00 (1.49/ea)
Subtotal: $0.00 /
5/16"-18 x 4-1/2" FT
SKU #6006-006-026
5/16"-18 x 4-1/2" FT
SKU #6006-006-026
1 $2.20 (2.2/ea)
100 $168.00 (1.68/ea)
1000 $1,510.00 (1.51/ea)
Subtotal: $0.00 /
5/16"-18 x 5" FT
SKU #6006-006-028
5/16"-18 x 5" FT
SKU #6006-006-028
1 $2.27 (2.27/ea)
100 $174.00 (1.74/ea)
1000 $1,560.00 (1.56/ea)
Subtotal: $0.00 /
5/16"-18 x 6" FT
SKU #6006-006-030
5/16"-18 x 6" FT
SKU #6006-006-030
1 $2.37 (2.37/ea)
100 $181.00 (1.81/ea)
1000 $1,630.00 (1.63/ea)
Subtotal: $0.00 /
5/16"-18 x 8" PT
SKU #6006-006-032
5/16"-18 x 8" PT
SKU #6006-006-032
1 $5.21 (5.21/ea)
100 $371.00 (3.71/ea)
1000 $3,340.00 (3.34/ea)
Subtotal: $0.00 /

Frequently Used With

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 $0.16 (0.16/ea)
100 $9.00 (0.09/ea)
1000 $80.00 (0.08/ea)
Subtotal: $0.00
Lock Washer Split Ring 316 SS - 5/16" (0.314 ID x 0.583 OD x .078 THK)
Lock Washer Split Ring 316 SS - 5/16" (0.314 ID x 0.583 OD x .078 THK) 12400075
Lock Washer Split Ring 316 SS - 5/16
1 $0.12 (0.12/ea)
100 $7.00 (0.07/ea)
1000 $60.00 (0.06/ea)
Subtotal: $0.00
Flat Washers 316 SS - 5/16" (0.343 ID x 3/4 OD x .050 THK)
Flat Washers 316 SS - 5/16" (0.343 ID x 3/4 OD x .050 THK) 12280073
Flat Washers 316 SS - 5/16
1 $0.17 (0.17/ea)
100 $9.00 (0.09/ea)
1000 $70.00 (0.07/ea)
Subtotal: $0.00
MRO Solution 2400 - Marine Grade Anti-Seize Lubricant - 8 oz.
MRO Solution 2400 - Marine Grade Anti-Seize Lubricant - 8 oz. 1050-106
MRO Solution 2400 - Marine Grade Anti-Seize Lubricant - 8 oz.
Anti Seize MRO Solution 2400 - 8oz Prevent Fastener Galling & Locking Up with Anti-Seize Lubricants
Our Price: $18.11
Subtotal: $0.00
Product Specifications
Product Specifications
Color
Silver
Corner Radius on Square
0.031
Corrosion Resistant
Yes
Filet Radius
0.031
Grade
316
Head Diameter
Max 0.719 - Min 0.688
Head Height Max
0.176
Head Style
Dome
Marine Grade
Yes
Material
Stainless Steel
Overall Head Height
Max 0.176 - Min 0.156
Product Type
Carriage Bolt
Square Neck Depth
Max 0.187 - Min 0.156
Square Neck Width
Max 0.324 - Min 0.307
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.