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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
Select Package Quantity
SubTotal
Carriage Bolt 316 Stainless Steel 5/16"-18 x 3/4" FT
SKU #6006-006-002
Carriage Bolt 316 Stainless Steel 5/16"-18 x 3/4" FT
SKU #6006-006-002
1
 $2.01 (2.01/ea)
25
 $48.00 (1.92/ea)
100
 $184.00 (1.84/ea)
1000
 $1,830.00 (1.83/ea)
Subtotal: $0.00 /
Carriage Bolt 316 Stainless Steel 5/16"-18 x 1" FT
SKU #6006-006-004
Carriage Bolt 316 Stainless Steel 5/16"-18 x 1" FT
SKU #6006-006-004
1
 $2.28 (2.28/ea)
25
 $54.75 (2.19/ea)
100
 $211.00 (2.11/ea)
1000
 $2,090.00 (2.09/ea)
Subtotal: $0.00 /
Carriage Bolt 316 Stainless Steel 5/16"-18 x 1-1/4" FT
SKU #6006-006-006
Carriage Bolt 316 Stainless Steel 5/16"-18 x 1-1/4" FT
SKU #6006-006-006
1
 $2.71 (2.71/ea)
25
 $65.25 (2.61/ea)
100
 $252.00 (2.52/ea)
1000
 $2,490.00 (2.49/ea)
Subtotal: $0.00 /
Carriage Bolt 316 Stainless Steel 5/16"-18 x 1-1/2" FT
SKU #6006-006-008
Carriage Bolt 316 Stainless Steel 5/16"-18 x 1-1/2" FT
SKU #6006-006-008
1
 $3.27 (3.27/ea)
25
 $78.50 (3.14/ea)
100
 $300.00 (3/ea)
1000
 $2,990.00 (2.99/ea)
Subtotal: $0.00 /
Carriage Bolt 316 Stainless Steel 5/16"-18 x 1-3/4" FT
SKU #6006-006-010
Carriage Bolt 316 Stainless Steel 5/16"-18 x 1-3/4" FT
SKU #6006-006-010
1
 $3.77 (3.77/ea)
25
 $90.75 (3.63/ea)
100
 $347.00 (3.47/ea)
1000
 $3,440.00 (3.44/ea)
Subtotal: $0.00 /
Carriage Bolt 316 Stainless Steel 5/16"-18 x 2" FT
SKU #6006-006-012
Carriage Bolt 316 Stainless Steel 5/16"-18 x 2" FT
SKU #6006-006-012
1
 $3.87 (3.87/ea)
25
 $93.25 (3.73/ea)
100
 $358.00 (3.58/ea)
1000
 $3,570.00 (3.57/ea)
Subtotal: $0.00 /
Carriage Bolt 316 Stainless Steel 5/16"-18 x 2-1/4" FT
SKU #6006-006-014
Carriage Bolt 316 Stainless Steel 5/16"-18 x 2-1/4" FT
SKU #6006-006-014
1
 $4.42 (4.42/ea)
25
 $106.00 (4.24/ea)
100
 $405.00 (4.05/ea)
1000
 $4,020.00 (4.02/ea)
Subtotal: $0.00 /
Carriage Bolt 316 Stainless Steel 5/16"-18 x 2-1/2" FT
SKU #6006-006-016
Carriage Bolt 316 Stainless Steel 5/16"-18 x 2-1/2" FT
SKU #6006-006-016
1
 $4.42 (4.42/ea)
25
 $106.00 (4.24/ea)
100
 $405.00 (4.05/ea)
1000
 $4,020.00 (4.02/ea)
Subtotal: $0.00 /
Carriage Bolt 316 Stainless Steel 5/16"-18 x 2-3/4" FT
SKU #6006-006-018
Carriage Bolt 316 Stainless Steel 5/16"-18 x 2-3/4" FT
SKU #6006-006-018
1
 $5.17 (5.17/ea)
25
 $123.75 (4.95/ea)
100
 $475.00 (4.75/ea)
1000
 $4,740.00 (4.74/ea)
Subtotal: $0.00 /
Carriage Bolt 316 Stainless Steel 5/16"-18 x 3" FT
SKU #6006-006-020
Carriage Bolt 316 Stainless Steel 5/16"-18 x 3" FT
SKU #6006-006-020
1
 $5.18 (5.18/ea)
25
 $124.25 (4.97/ea)
100
 $475.00 (4.75/ea)
1000
 $4,740.00 (4.74/ea)
Subtotal: $0.00 /
Carriage Bolt 316 Stainless Steel 5/16"-18 x 3-1/2" FT
SKU #6006-006-022
Carriage Bolt 316 Stainless Steel 5/16"-18 x 3-1/2" FT
SKU #6006-006-022
1
 $6.04 (6.04/ea)
25
 $145.00 (5.8/ea)
100
 $555.00 (5.55/ea)
1000
 $5,530.00 (5.53/ea)
Subtotal: $0.00 /
Carriage Bolt 316 Stainless Steel 5/16"-18 x 4" FT
SKU #6006-006-024
Carriage Bolt 316 Stainless Steel 5/16"-18 x 4" FT
SKU #6006-006-024
1
 $7.81 (7.81/ea)
25
 $187.75 (7.51/ea)
100
 $719.00 (7.19/ea)
1000
 $7,160.00 (7.16/ea)
Subtotal: $0.00 /
Carriage Bolt 316 Stainless Steel 5/16"-18 x 4-1/2" FT
SKU #6006-006-026
Carriage Bolt 316 Stainless Steel 5/16"-18 x 4-1/2" FT
SKU #6006-006-026
1
 $8.11 (8.11/ea)
25
 $194.75 (7.79/ea)
100
 $745.00 (7.45/ea)
1000
 $7,440.00 (7.44/ea)
Subtotal: $0.00 /
Carriage Bolt 316 Stainless Steel 5/16"-18 x 5" FT
SKU #6006-006-028
Carriage Bolt 316 Stainless Steel 5/16"-18 x 5" FT
SKU #6006-006-028
1
 $8.46 (8.46/ea)
25
 $202.50 (8.1/ea)
100
 $773.00 (7.73/ea)
1000
 $7,720.00 (7.72/ea)
Subtotal: $0.00 /
Carriage Bolt 316 Stainless Steel 5/16"-18 x 6" FT
SKU #6006-006-030
Carriage Bolt 316 Stainless Steel 5/16"-18 x 6" FT
SKU #6006-006-030
1
 $12.37 (12.37/ea)
25
 $296.75 (11.87/ea)
100
 $1,136.00 (11.36/ea)
1000
 $11,330.00 (11.33/ea)
Subtotal: $0.00 /
Carriage Bolt 316 Stainless Steel 5/16"-18 x 8" PT
SKU #6006-006-032
Carriage Bolt 316 Stainless Steel 5/16"-18 x 8" PT
SKU #6006-006-032
1
 $13.60 (13.6/ea)
25
 $326.50 (13.06/ea)
100
 $1,248.00 (12.48/ea)
1000
 $12,460.00 (12.46/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
 NA
25
 $3.50 (0.14/ea)
100
 $10.00 (0.1/ea)
1000
 $80.00 (0.08/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
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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