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1/2-20 Socket Head Screws 18-8 Stainless Steel

1/2"-20 Stainless Steel Socket Cap Screws

Screw Diameter - Thread Pitch: 1/2"-20

1/2"-20 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

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

Size
Select Package Quantity
SubTotal
Socket Head Screws 18-8 SS - 1/2-20 x 3/4 (FT)
SKU #37002
Socket Head Screws 18-8 SS - 1/2-20 x 3/4 (FT)
SKU #37002
1
 $2.38 (2.38/ea)
100
 $195.00 (1.95/ea)
1000
 $1,720.00 (1.72/ea)
Subtotal: $0.00 /
Socket Head Screws 18-8 SS - 1/2-20 x 7/8 (FT)
SKU #37012
Socket Head Screws 18-8 SS - 1/2-20 x 7/8 (FT)
SKU #37012
1
 $5.12 (5.12/ea)
100
 $471.00 (4.71/ea)
1000
 $4,680.00 (4.68/ea)
Subtotal: $0.00 /
Socket Head Screws 18-8 SS - 1/2-20 x 1 (FT)
SKU #37022
Socket Head Screws 18-8 SS - 1/2-20 x 1 (FT)
SKU #37022
1
 $2.49 (2.49/ea)
100
 $205.00 (2.05/ea)
1000
 $1,790.00 (1.79/ea)
Subtotal: $0.00 /
Socket Head Screws 18-8 SS - 1/2-20 x 1-1/4 (FT)
SKU #37032
Socket Head Screws 18-8 SS - 1/2-20 x 1-1/4 (FT)
SKU #37032
1
 $2.63 (2.63/ea)
100
 $213.00 (2.13/ea)
1000
 $1,860.00 (1.86/ea)
Subtotal: $0.00 /
Socket Head Screws 18-8 SS - 1/2-20 x 1-1/2 (FT)
SKU #37042
Socket Head Screws 18-8 SS - 1/2-20 x 1-1/2 (FT)
SKU #37042
1
 $2.78 (2.78/ea)
100
 $228.00 (2.28/ea)
1000
 $1,990.00 (1.99/ea)
Subtotal: $0.00 /
Socket Head Screws 18-8 SS - 1/2-20 x 1-3/4 (FT)
SKU #37052
Socket Head Screws 18-8 SS - 1/2-20 x 1-3/4 (FT)
SKU #37052
1
 $3.36 (3.36/ea)
100
 $279.00 (2.79/ea)
1000
 $2,430.00 (2.43/ea)
Subtotal: $0.00 /
Socket Head Screws 18-8 SS - 1/2-20 x 2 (FT)
SKU #37062
Socket Head Screws 18-8 SS - 1/2-20 x 2 (FT)
SKU #37062
1
 $3.70 (3.7/ea)
100
 $306.00 (3.06/ea)
1000
 $2,670.00 (2.67/ea)
Subtotal: $0.00 /
Socket Head Screws 18-8 SS - 1/2-20 x 2-1/4 (PT)
SKU #37072
Socket Head Screws 18-8 SS - 1/2-20 x 2-1/4 (PT)
SKU #37072
1
 $4.15 (4.15/ea)
100
 $384.00 (3.84/ea)
1000
 $3,800.00 (3.8/ea)
Subtotal: $0.00 /
Socket Head Screws 18-8 SS - 1/2-20 x 2-1/2 (PT)
SKU #37082
Socket Head Screws 18-8 SS - 1/2-20 x 2-1/2 (PT)
SKU #37082
1
 $4.43 (4.43/ea)
100
 $364.00 (3.64/ea)
1000
 $3,180.00 (3.18/ea)
Subtotal: $0.00 /
Socket Head Screws 18-8 SS - 1/2-20 x 3 (PT)
SKU #37092
Socket Head Screws 18-8 SS - 1/2-20 x 3 (PT)
SKU #37092
1
 $4.68 (4.68/ea)
100
 $386.00 (3.86/ea)
1000
 $3,370.00 (3.37/ea)
Subtotal: $0.00 /
Socket Head Screws 18-8 SS - 1/2-20 x 3-1/4 (PT)
SKU #37102
Socket Head Screws 18-8 SS - 1/2-20 x 3-1/4 (PT)
SKU #37102
1
 $8.29 (8.29/ea)
100
 $762.00 (7.62/ea)
1000
 $7,590.00 (7.59/ea)
Subtotal: $0.00 /
Socket Head Screws 18-8 SS - 1/2-20 x 3-1/2 (PT)
SKU #37112
Socket Head Screws 18-8 SS - 1/2-20 x 3-1/2 (PT)
SKU #37112
1
 $8.25 (8.25/ea)
100
 $691.00 (6.91/ea)
1000
 $6,030.00 (6.03/ea)
Subtotal: $0.00 /
Socket Head Screws 18-8 SS - 1/2-20 x 4 (PT)
SKU #37122
Socket Head Screws 18-8 SS - 1/2-20 x 4 (PT)
SKU #37122
1
 $11.90 (11.9/ea)
100
 $985.00 (9.85/ea)
1000
 $8,600.00 (8.6/ea)
Subtotal: $0.00 /
Socket Head Screws 18-8 SS - 1/2-20 x 4-1/2 (PT)
SKU #37132
Socket Head Screws 18-8 SS - 1/2-20 x 4-1/2 (PT)
SKU #37132
1
 $17.25 (17.25/ea)
100
 $1,399.00 (13.99/ea)
1000
 $12,220.00 (12.22/ea)
Subtotal: $0.00 /
Socket Head Screws 18-8 SS - 1/2-20 x 5 (PT)
SKU #37142
Socket Head Screws 18-8 SS - 1/2-20 x 5 (PT)
SKU #37142
1
 $21.07 (21.07/ea)
100
 $1,797.00 (17.97/ea)
1000
 $15,680.00 (15.68/ea)
Subtotal: $0.00 /
Socket Head Screws 18-8 SS - 1/2-20 x 6 (PT)
SKU #37152
Socket Head Screws 18-8 SS - 1/2-20 x 6 (PT)
SKU #37152
1
 $22.32 (22.32/ea)
100
 $1,920.00 (19.2/ea)
1000
 $17,080.00 (17.08/ea)
Subtotal: $0.00 /



FREQUENTLY USED WITH

Hex Allen Key Long Arm 3/8" Black Alloy
Hex Allen Key Long Arm 3/8" Black Alloy 1055-10030-0002
Hex Allen Key Long Arm 3/8
1
 $1.89 (1.89/ea)
100
 $182.00 (1.82/ea)
1000
 $1,760.00 (1.76/ea)
Subtotal: $0.00 /
Hex Allen Key Short Arm 3/8 Black Alloy
Hex Allen Key Short Arm 3/8 Black Alloy 1055-20030-0002
Hex Allen Key Short Arm 3/8 Black Alloy
1
 $1.71 (1.71/ea)
100
 $161.00 (1.61/ea)
1000
 $1,510.00 (1.51/ea)
Subtotal: $0.00 /
Hex Finish Nuts 304 SS - 1/2"-20 (3/4" Flats x 7/16" Thick)
Hex Finish Nuts 304 SS - 1/2"-20 (3/4" Flats x 7/16" Thick) 123092
Hex Finish Nuts 304 SS - 1/2
1
 $0.47 (0.47/ea)
100
 $34.00 (0.34/ea)
1000
 $290.00 (0.29/ea)
Subtotal: $0.00 /
Product Specifications
Chamfer on Radius
Max 0.010
Color
Silver
Corrosion Resistant
Yes
Diameter
1/2"
Drive Style
Internal Hex (Allen)
Grade
18-8
Head Diameter
Max 0.750 - Min 0.735
Head Height Max
0.5
Head Side Height
Max 0.450
Head Style
Socket Cap
Hex Drive
3/8"
Material
Stainless Steel
Overall Head Height
Max 0.500 - Min 0.492
Product Type
Socket Cap Screws
System of Measurement (Unit)
Inch
Thread Direction
Right Hand
Thread Pitch (Count)
20 Per Inch
Thread Standard
UNF
Thread Type
Fine
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.