Blog Fasteners101 FAQ's Reviews About Us Sign In / Create an Account
Go to homepage
Shipping Info
Request A Quote
Live Chat
CONTACT US
866-573-0445
Mon-Fri 8am-5pm EST
0
Shopping cart
0 / $0.00*
Orders & Buy Again
Skip image gallery
Print this page

Socket Cap Screws, Stainless Steel 18-8, 5/16"-24 x 5/8, Full Thread

Screw Diameter - Thread Pitch: 5/16"-24

5/16"-24 Stainless steel Knurled Head socket cap screws are bolts or machine screws with a Hex or Allen drive style.

  • Commonly referred to as allen bolts, socket head cap screws, or socket head screws
  • Driven manually, or with a Hex Allen Bit or Key
  • Cylindrical head
  • 18-8 Stainless Steel offer the Fastener Industry standard for corrosion and rust resistance
  • Recommended for use in exterior applications, or those that are exposed to fresh water moisture
The term socket head cap screw typically refers to a type of threaded fastener whose head diameter is nominally 1.5 times or more that of the screw shank (major) diameter.

Sizes Listed As:
Diameter - Thread Pitch x Length from Underside of Head
FT = Full Thread
PT = Partial Thread

Product number: 31012
Print this page
Click on a size/sku in the table to view product-specific details and specifications.
FT = Full Thread (threaded the entire length)  ·  PT = Partial Thread (unthreaded shoulder below the head)

Specifications

  • Chamfer on Radius: Max 0.008
  • Color: Silver
  • Condition: New
  • Corrosion Resistant: Yes
  • Diameter: 5/16"
  • Drive Style: Internal Hex (Allen)
  • Head Type: Socket Head
  • Thread Direction: Right Hand
  • Thread Type: Fine
  • Fit: 3A
  • FT = Full Thread: Yes
  • Grade: 18-8
  • Head Height: Max 0.312 - Min 0.306
  • Head Height Max: 0.312
  • Head Diameter: Max 0.469 - Min 0.457
  • Head Side Height: Min 0.281
  • Head Style: Socket Cap
  • Hex Drive: 1/4"
  • Length: 5/8
  • Material: Stainless Steel
  • Overall Head Height: Max 0.312 - Min 0.306
  • Part Number: 618930299625
  • Product Type: Socket Cap Screws
  • Size System: US
  • Size Type: Regular
  • System of Measurement: Inch
  • Thread Direction: Right Hand
  • Thread Pitch: 24 Per Inch
  • Thread Size: 5/16"-24
  • Thread Standard: UNC
  • Thread Type: Coarse
  • Tolerance (IFI): Actual measurements may vary slightly +/- depending on production run within IFI Tolerances
  • Weight: 1 lb

Frequently Used With

Flat Washers, Stainless Steel 304, 5/16" (.343 ID x 3/4 OD x .050 Thick) Flat Washers, Stainless Steel 304, 5/16" (.343 ID x 3/4 OD x .050 Thick)
Volume Pricing*
1
$0.09
($0.09/ea)
100
$5.00
($0.05/ea)
1000
$40.00
($0.04/ea)
$0.00
Lock Washers, Split Ring, Stainless Steel 304, 5/16" (.314 ID x .583 OD x .078 Thick) Lock Washers, Split Ring, Stainless Steel 304, 5/16" (.314 ID x .583 OD x .078 Thick)
Volume Pricing*
1
$0.11
($0.11/ea)
100
$6.00
($0.06/ea)
1000
$50.00
($0.05/ea)
$0.00
Hex Finish Nuts, Stainless Steel 304, 5/16"-24 (1/2" Flats x 17/64" Thick) Hex Finish Nuts, Stainless Steel 304, 5/16"-24 (1/2" Flats x 17/64" Thick)
Volume Pricing*
1
$0.16
($0.16/ea)
100
$11.00
($0.11/ea)
1000
$90.00
($0.09/ea)
$0.00
Nylon Lock Nuts, Stainless Steel 304, 5/16-24 (.502 Flats x .359 Height) Nylon Lock Nuts, Stainless Steel 304, 5/16-24 (.502 Flats x .359 Height)
Volume Pricing*
1
$0.24
($0.24/ea)
100
$16.00
($0.16/ea)
1000
$140.00
($0.14/ea)
$0.00
Hex Socket Head Allen Power Bits, 1/4, Length 2" Hex Socket Head Allen Power Bits, 1/4, Length 2"
Volume Pricing*
1
$3.15
($3.15/ea)
10
$29.80
($2.98/ea)
50
$129.50
($2.59/ea)
$0.00
Hex Allen Key, Short Arm, Black Alloy Steel, 1/4" Hex Allen Key, Short Arm, Black Alloy Steel, 1/4"
Volume Pricing*
1
$1.16
($1.16/ea)
100
$87.00
($0.87/ea)
1000
$660.00
($0.66/ea)
$0.00
Select Size/SKU & Quantity
16 Available Sizes
SIZE/SKU Review Volume Pricing* Enter Any Qty
5/16"-24 x 1/2" FT
31002
1
$0.47 ($0.47/ea)
100
$37.00 ($0.37/ea)
1000
$320.00 ($0.32/ea)
$0.00
5/16"-24 x 9/16" FT
31010-2
1
$3.51 ($3.51/ea)
100
$325.00 ($3.25/ea)
1000
$3,210.00 ($3.21/ea)
$0.00
5/16"-24 x 3/4" FT
31022
1
$0.50 ($0.50/ea)
100
$39.00 ($0.39/ea)
1000
$340.00 ($0.34/ea)
$0.00
5/16"-24 x 5/8" FT
31012
1
$0.49 ($0.49/ea)
100
$38.00 ($0.38/ea)
1000
$330.00 ($0.33/ea)
$0.00
5/16"-24 x 7/8" FT
31032
1
$0.55 ($0.55/ea)
100
$43.00 ($0.43/ea)
1000
$370.00 ($0.37/ea)
$0.00
5/16"-24 x 1" FT
31042
1
$0.57 ($0.57/ea)
100
$44.00 ($0.44/ea)
1000
$380.00 ($0.38/ea)
$0.00
5/16"-24 x 1-1/4" FT
31052
1
$0.62 ($0.62/ea)
100
$48.00 ($0.48/ea)
1000
$420.00 ($0.42/ea)
$0.00
5/16"-24 x 1-1/2" FT
31062
1
$0.70 ($0.70/ea)
100
$54.00 ($0.54/ea)
1000
$470.00 ($0.47/ea)
$0.00
5/16"-24 x 1-3/4" PT
31072
1
$0.79 ($0.79/ea)
100
$61.00 ($0.61/ea)
1000
$530.00 ($0.53/ea)
$0.00
5/16"-24 x 2" PT
31082
1
$0.82 ($0.82/ea)
100
$63.00 ($0.63/ea)
1000
$550.00 ($0.55/ea)
$0.00
5/16"-24 x 2-1/4" PT
31090-2
1
$1.24 ($1.24/ea)
100
$115.00 ($1.15/ea)
1000
$1,110.00 ($1.11/ea)
$0.00
5/16"-24 x 2-1/2" PT
31092
1
$1.11 ($1.11/ea)
100
$85.00 ($0.85/ea)
1000
$750.00 ($0.75/ea)
$0.00
5/16"-24 x 2-3/4" PT
311002
1
$1.85 ($1.85/ea)
100
$165.00 ($1.65/ea)
1000
$1,600.00 ($1.60/ea)
$0.00
5/16"-24 x 3" PT
31102
1
$1.75 ($1.75/ea)
100
$135.00 ($1.35/ea)
1000
$1,180.00 ($1.18/ea)
$0.00
5/16"-24 x 3-1/2" PT
31112
1
$1.76 ($1.76/ea)
100
$135.00 ($1.35/ea)
1000
$1,190.00 ($1.19/ea)
$0.00
5/16"-24 x 4" PT
31122
1
$2.02 ($2.02/ea)
100
$155.00 ($1.55/ea)
1000
$1,360.00 ($1.36/ea)
$0.00

*Volume pricing available on select products. Products without quantity breaks are priced per unit.

Page Total: $0.00

Subscribe to our regular newsletter now to stay tuned on the latest products and special offers.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Privacy*
This website uses cookies to ensure the best experience possible. More information...