1/4-20 Socket Head Screws 18-8 Stainless Steel

1/4"-20 Stainless Steel Socket Cap Screws

Screw Diameter - Thread Pitch: 1/4"-20


1/4"-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 Cap Screws 304 SS - 1/4-20 x 1/4" FT
SKU #28002
Socket Cap Screws 304 SS - 1/4-20 x 1/4" FT
SKU #28002
1
NA
25
$5.00 (0.2/ea)
100
$12.00 (0.12/ea)
1000
$100.00 (0.1/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 5/16" FT
SKU #28012
Socket Cap Screws 304 SS - 1/4-20 x 5/16" FT
SKU #28012
1
NA
25
$6.25 (0.25/ea)
100
$19.00 (0.19/ea)
1000
$160.00 (0.16/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 3/8" FT
SKU #28022
Socket Cap Screws 304 SS - 1/4-20 x 3/8" FT
SKU #28022
1
NA
25
$5.50 (0.22/ea)
100
$12.00 (0.12/ea)
1000
$110.00 (0.11/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 7/16" FT
SKU #28032
Socket Cap Screws 304 SS - 1/4-20 x 7/16" FT
SKU #28032
1
NA
25
$5.75 (0.23/ea)
100
$17.00 (0.17/ea)
1000
$150.00 (0.15/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 9/16" FT
SKU #28052
Socket Cap Screws 304 SS - 1/4-20 x 9/16" FT
SKU #28052
1
NA
25
$7.25 (0.29/ea)
100
$22.00 (0.22/ea)
1000
$200.00 (0.2/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 5/8" FT
SKU #28062
Socket Cap Screws 304 SS - 1/4-20 x 5/8" FT
SKU #28062
1
NA
25
$5.75 (0.23/ea)
100
$17.00 (0.17/ea)
1000
$150.00 (0.15/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 7/8" FT
SKU #28082
Socket Cap Screws 304 SS - 1/4-20 x 7/8" FT
SKU #28082
1
NA
25
$6.25 (0.25/ea)
100
$17.00 (0.17/ea)
1000
$150.00 (0.15/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 1" FT
SKU #28092
Socket Cap Screws 304 SS - 1/4-20 x 1" FT
SKU #28092
1
NA
25
$6.50 (0.26/ea)
100
$22.00 (0.22/ea)
1000
$190.00 (0.19/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 1-1/8" FT
SKU #28102
Socket Cap Screws 304 SS - 1/4-20 x 1-1/8" FT
SKU #28102
1
NA
25
$8.75 (0.35/ea)
100
$33.00 (0.33/ea)
1000
$310.00 (0.31/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 1-1/4" FT
SKU #28112
Socket Cap Screws 304 SS - 1/4-20 x 1-1/4" FT
SKU #28112
1
$0.33 (0.33/ea)
25
$6.25 (0.25/ea)
100
$20.00 (0.2/ea)
1000
$170.00 (0.17/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 1-3/8" FT
SKU #28122
Socket Cap Screws 304 SS - 1/4-20 x 1-3/8" FT
SKU #28122
1
NA
25
$10.50 (0.42/ea)
100
$39.00 (0.39/ea)
1000
$360.00 (0.36/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 1-1/2" PT
SKU #28132
Socket Cap Screws 304 SS - 1/4-20 x 1-1/2" PT
SKU #28132
1
NA
25
$8.75 (0.35/ea)
100
$25.00 (0.25/ea)
1000
$210.00 (0.21/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 1-3/4" PT
SKU #28142
Socket Cap Screws 304 SS - 1/4-20 x 1-3/4" PT
SKU #28142
1
NA
25
$10.25 (0.41/ea)
100
$30.00 (0.3/ea)
1000
$260.00 (0.26/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 2" PT
SKU #28152
Socket Cap Screws 304 SS - 1/4-20 x 2" PT
SKU #28152
1
NA
25
$11.25 (0.45/ea)
100
$32.00 (0.32/ea)
1000
$270.00 (0.27/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 2-1/4" PT
SKU #28162
Socket Cap Screws 304 SS - 1/4-20 x 2-1/4" PT
SKU #28162
1
NA
25
$12.75 (0.51/ea)
100
$48.00 (0.48/ea)
1000
$450.00 (0.45/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 2-1/2" PT
SKU #28172
Socket Cap Screws 304 SS - 1/4-20 x 2-1/2" PT
SKU #28172
1
NA
25
$14.25 (0.57/ea)
100
$41.00 (0.41/ea)
1000
$340.00 (0.34/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 2-3/4" PT
SKU #28182
Socket Cap Screws 304 SS - 1/4-20 x 2-3/4" PT
SKU #28182
1
NA
25
$14.25 (0.57/ea)
100
$56.00 (0.56/ea)
1000
$520.00 (0.52/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 3" PT
SKU #28192
Socket Cap Screws 304 SS - 1/4-20 x 3" PT
SKU #28192
1
$0.74 (0.74/ea)
25
$17.50 (0.7/ea)
100
$46.00 (0.46/ea)
1000
$390.00 (0.39/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 3-1/4" PT
SKU #28202
Socket Cap Screws 304 SS - 1/4-20 x 3-1/4" PT
SKU #28202
1
$0.89 (0.89/ea)
25
$21.50 (0.86/ea)
100
$85.00 (0.85/ea)
1000
$820.00 (0.82/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 3-1/2" PT
SKU #28212
Socket Cap Screws 304 SS - 1/4-20 x 3-1/2" PT
SKU #28212
1
$1.11 (1.11/ea)
25
$21.50 (0.86/ea)
100
$85.00 (0.85/ea)
1000
$390.00 (0.39/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 4" PT
SKU #28222
Socket Cap Screws 304 SS - 1/4-20 x 4" PT
SKU #28222
1
$1.45 (1.45/ea)
25
$31.25 (1.25/ea)
100
$103.00 (1.03/ea)
1000
$880.00 (0.88/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 4-1/2" PT
SKU #28232
Socket Cap Screws 304 SS - 1/4-20 x 4-1/2" PT
SKU #28232
1
$2.23 (2.23/ea)
25
$44.25 (1.77/ea)
100
$157.00 (1.57/ea)
1000
$1,390.00 (1.39/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 5" PT
SKU #28242
Socket Cap Screws 304 SS - 1/4-20 x 5" PT
SKU #28242
1
$3.02 (3.02/ea)
25
$68.75 (2.75/ea)
100
$213.00 (2.13/ea)
1000
$1,880.00 (1.88/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 5-1/2" PT
SKU #28252
Socket Cap Screws 304 SS - 1/4-20 x 5-1/2" PT
SKU #28252
1
$3.69 (3.69/ea)
25
$81.25 (3.25/ea)
100
$261.00 (2.61/ea)
1000
$2,310.00 (2.31/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 6" PT
SKU #28262
Socket Cap Screws 304 SS - 1/4-20 x 6" PT
SKU #28262
1
$4.05 (4.05/ea)
25
$93.75 (3.75/ea)
100
$320.00 (3.2/ea)
1000
$2,850.00 (2.85/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 6-1/2" PT
SKU #28272
Socket Cap Screws 304 SS - 1/4-20 x 6-1/2" PT
SKU #28272
1
$13.44 (13.44/ea)
25
$325.00 (13/ea)
100
$1,095.00 (10.95/ea)
1000
$9,800.00 (9.8/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 7" PT
SKU #28282
Socket Cap Screws 304 SS - 1/4-20 x 7" PT
SKU #28282
1
$12.50 (12.5/ea)
25
$300.00 (12/ea)
100
$1,014.00 (10.14/ea)
1000
$9,090.00 (9.09/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-20 x 8" PT
SKU #28292
Socket Cap Screws 304 SS - 1/4-20 x 8" PT
SKU #28292
1
$23.65 (23.65/ea)
25
$562.50 (22.5/ea)
100
$1,921.00 (19.21/ea)
1000
$17,190.00 (17.19/ea)
Subtotal: $0.00 /

Frequently Used With

1
$3.15 (3.15/ea)
10
$29.80 (2.98/ea)
25
$72.75 (2.91/ea)
50
$129.50 (2.59/ea)
Subtotal: $0.00 /
1
$0.77 (0.77/ea)
25
$18.00 (0.72/ea)
100
$66.00 (0.66/ea)
1000
$600.00 (0.6/ea)
Subtotal: $0.00 /
1
$0.66 (0.66/ea)
25
$15.50 (0.62/ea)
100
$57.00 (0.57/ea)
1000
$520.00 (0.52/ea)
Subtotal: $0.00 /
1
NA
25
$2.75 (0.11/ea)
100
$9.00 (0.09/ea)
1000
$80.00 (0.08/ea)
Subtotal: $0.00 /

Product Specifications
Chamfer on Radius
Max 0.008
Color
Silver
Corrosion Resistant
Yes
Diameter
1/4"
Drive Style
Internal Hex (Allen)
Grade
18-8
Head Diameter
Max 0.375 - Min 0.365
Head Height Max
0.25
Head Side Height
Min 0.225
Head Style
Socket Cap
Hex Drive
3/16"
Material
Stainless Steel
Overall Head Height
Max 0.250 - Min 0.244
Product Type
Socket Cap Screws
System of Measurement (Unit)
Inch
Thread Direction
Right Hand
Thread Pitch (Count)
20 Per Inch
Thread Standard
UNC
Thread Type
Coarse
Tolerance (IFI)
Actual measurements may vary slightly +/- depending on production run within IFI Tolerances