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3/8"-16 Hex Cap Screw

3 reviews

Type 18-8 & 316 Stainless Steel

Choose from 4 diameters
Hard to find long lengths
Length is measured from under head to tip of screw
Be sure to use anti-seize compound or lubricant like WD-40 to prevent thread seizing.
Approved for use in ACQ Lumber

Need nuts and washers?
Nuts
Washers

1/4" 18-8SS & 316SS | 5/16" 18-8SS & 316SS | 3/8" 18-8SS & 316SS | 1/2" 18-8SS & 316SS

3/8"- 1618-8 Stainless Steel

Length
Code
Price
Qty

1"
C100CS

Code: C100CS
Price: 1+ $0.34/each
100+ $0.30/each
Quantity:

2"
C200CS

Code: C200CS
Price: 1+ $0.61/each
100+ $0.54/each
Quantity:

2-1/4"
C214CS

Code: C214CS
Price: 1+ $0.70/each
100+ $0.61/each
Quantity:

2-1/2"
C212CS

Code: C212CS
Price: 1+ $0.60/each
100+ $0.54/each
Quantity:

3"
C300CS

Code: C300CS
Price: 1+ $0.88/each
100+ $0.78/each
Quantity:

3-1/2"
C312CS

Code: C312CS
Price: 1+ $0.93/each
100+ $0.81/each
Quantity:

4"
C400CS

Code: C400CS
Price: 1+ $1.00/each
100+ $0.88/each
Quantity:

4-1/2"
C412CS

Code: C412CS
Price: 1+ $1.10/each
100+ $0.96/each
Quantity:

5"
C500CS

Code: C500CS
Price: 1+ $1.23/each
100+ $1.08/each
Quantity:

5-1/2"
C512CS

Code: C512CS
Price: 1+ $1.60/each
100+ $1.40/each
Quantity:

6"
C600CS

Code: C600CS
Price: 1+ $1.24/each
100+ $1.12/each
Quantity:

6-1/2"
C612CS

Code: C612CS
Price: 1+ $1.55/each
100+ $1.40/each
Quantity:

7"
C700CS

Code: C700CS
Price: 1+ $1.99/each
100+ $1.79/each
Quantity:

8"
C800CS

Code: C800CS
Price: 1+ $2.50/each
100+ $2.25/each
Quantity:

8-1/2"
C812CS

Code: C812CS
Price: 1+ $3.50/each
100+ $3.15/each
Quantity:

9"
C900CS

Code: C900CS
Price: 1+ $3.75/each
100+ $3.38/each
Quantity:

9-1/2"
C912CS

Code: C912CS
Price: 1+ $3.99/each
100+ $3.59/each
Quantity:

10"
C1000CS

Code: C1000CS
Price: 1+ $4.10/each
100+ $3.69/each
Quantity:

10-1/2"
C1012CS

Code: C1012CS
Price: 1+ $4.60/each
100+ $4.14/each
Quantity:

12"
C1200CS

Code: C1200CS
Price: 1+ $5.60/each
50+ $5.04/each
Quantity:

14"
C1400CS

Code: C1400CS
Price: 1+ $13.50/each
50+ $12.15/each
Quantity:

16"
C1600CS

Code: C1600CS
Price: 1+ $15.30/each
25+ $13.77/each
Quantity:

3/8"-16 316 Stainless Steel

Length
Code
Price
Qty

1"
C100CS6

Code: C100CS6
Price: 1+ $0.51/each
100+ $0.45/each
Quantity:

1-1/4"
C114CS6

Code: C114CS6
Price: 1+ $0.55/each
100+ $0.50/each
Quantity:

2"
C200CS6

Code: C200CS6
Price: 1+ $0.80/each
100+ $0.72/each
Quantity:

2-1/2"
C212CS6

Code: C212CS6
Price: 1+ $0.99/each
100+ $0.89/each
Quantity:

3"
C300CS6

Code: C300CS6
Price: 1+ $1.10/each
100+ $0.99/each
Quantity:

4"
C400CS6

Code: C400CS6
Price: 1+ $1.50/each
100+ $1.35/each
Quantity:

5"
C500CS6

Code: C500CS6
Price: 1+ $2.58/each
100+ $2.15/each
Quantity:

7"
C700CS6

Code: C700CS6
Price: 1+ $4.50/each
50+ $4.05/each
Quantity:

8"
C800CS6

Code: C800CS6
Price: 1+ $7.50/each
50+ $6.75/each
Quantity:

9"
C900CS6

Code: C900CS6
Price: 1+ $9.50/each
50+ $8.55/each
Quantity:

10"
C1000CS6

Code: C1000CS6
Price: 1+ $15.75/each
25+ $14.18/each
Quantity:

12"
C1200CS6

Code: C1200CS6
Price: 1+ $18.50/each
Quantity:

Additional Information
Q&A

Stainless steel hex cap screws - also referred to as hex cap bolts - have a smooth body with threading on the end.

Thread length is generally twice the diameter of the shank plus 1/4" for lengths up to 6" and twice the diameter plus 1/2" for lengths over 6". Some may have an additional 1/4" to 1/2" of threading depending on the manufacturer.

Hex cap screws are normally installed with two flat washers and a hex nut.

Available in both 18-8 & 316 stainless steel. Type 316 Stainless Steel should always be specified for salt water applications. It contains molybdenum for superior corrosion resistance in salt water and other highly corrosive environments.

Diameters up to 1-1/2" available. Get A Quote

3/8"-16 Hex Cap Screw

Type 18-8 & 316 Stainless Steel

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