1/4-28 Socket Head Screws 18-8 Stainless Steel

1/4"-28 Stainless Steel Socket Cap Screws

Screw Diameter - Thread Pitch: 1/4"-28


1/4"-28 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 - 1/4-28 x 1/4 FT
SKU #29002
Socket Cap Screws 304 SS - 1/4-28 x 1/4 FT
SKU #29002
1
NA
25
$5.50 (0.22/ea)
100
$18.00 (0.18/ea)
1000
$160.00 (0.16/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-28 x 5/16 FT
SKU #290102
Socket Cap Screws 304 SS - 1/4-28 x 5/16 FT
SKU #290102
1
NA
25
$7.00 (0.28/ea)
100
$22.00 (0.22/ea)
1000
$200.00 (0.2/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-28 x 3/8 FT
SKU #29012
Socket Cap Screws 304 SS - 1/4-28 x 3/8 FT
SKU #29012
1
NA
25
$5.75 (0.23/ea)
100
$19.00 (0.19/ea)
1000
$170.00 (0.17/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-28 x 7/16 FT
SKU #290202
Socket Cap Screws 304 SS - 1/4-28 x 7/16 FT
SKU #290202
1
NA
25
$7.50 (0.3/ea)
100
$25.00 (0.25/ea)
1000
$230.00 (0.23/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-28 x 1/2 FT
SKU #29022
Socket Cap Screws 304 SS - 1/4-28 x 1/2 FT
SKU #29022
1
NA
25
$5.75 (0.23/ea)
100
$20.00 (0.2/ea)
1000
$180.00 (0.18/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-28 x 5/8 FT
SKU #29032
Socket Cap Screws 304 SS - 1/4-28 x 5/8 FT
SKU #29032
1
NA
25
$6.75 (0.27/ea)
100
$22.00 (0.22/ea)
1000
$190.00 (0.19/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-28 x 3/4 FT
SKU #29042
Socket Cap Screws 304 SS - 1/4-28 x 3/4 FT
SKU #29042
1
NA
25
$6.75 (0.27/ea)
100
$23.00 (0.23/ea)
1000
$200.00 (0.2/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-28 x 7/8 FT
SKU #29052
Socket Cap Screws 304 SS - 1/4-28 x 7/8 FT
SKU #29052
1
NA
25
$7.50 (0.3/ea)
100
$24.00 (0.24/ea)
1000
$210.00 (0.21/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-28 x 1 FT
SKU #29062
Socket Cap Screws 304 SS - 1/4-28 x 1 FT
SKU #29062
1
NA
25
$7.75 (0.31/ea)
100
$25.00 (0.25/ea)
1000
$220.00 (0.22/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-28 x 1-1/8 FT
SKU #290702
Socket Cap Screws 304 SS - 1/4-28 x 1-1/8 FT
SKU #290702
1
NA
25
$11.00 (0.44/ea)
100
$41.00 (0.41/ea)
1000
$390.00 (0.39/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-28 x 1-1/4 FT
SKU #29072
Socket Cap Screws 304 SS - 1/4-28 x 1-1/4 FT
SKU #29072
1
NA
25
$8.75 (0.35/ea)
100
$27.00 (0.27/ea)
1000
$230.00 (0.23/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-28 x 1-3/8 FT
SKU #290802
Socket Cap Screws 304 SS - 1/4-28 x 1-3/8 FT
SKU #290802
1
NA
25
$14.25 (0.57/ea)
100
$53.00 (0.53/ea)
1000
$510.00 (0.51/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-28 x 1-1/2 PT
SKU #29082
Socket Cap Screws 304 SS - 1/4-28 x 1-1/2 PT
SKU #29082
1
NA
25
$9.00 (0.36/ea)
100
$30.00 (0.3/ea)
1000
$260.00 (0.26/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-28 x 1-5/8 PT
SKU #290902
Socket Cap Screws 304 SS - 1/4-28 x 1-5/8 PT
SKU #290902
1
$0.73 (0.73/ea)
25
$17.50 (0.7/ea)
100
$67.00 (0.67/ea)
1000
$660.00 (0.66/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-28 x 1-3/4 PT
SKU #29092
Socket Cap Screws 304 SS - 1/4-28 x 1-3/4 PT
SKU #29092
1
NA
25
$10.50 (0.42/ea)
100
$34.00 (0.34/ea)
1000
$290.00 (0.29/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-28 x 2 PT
SKU #29102
Socket Cap Screws 304 SS - 1/4-28 x 2 PT
SKU #29102
1
NA
25
$12.50 (0.5/ea)
100
$38.00 (0.38/ea)
1000
$330.00 (0.33/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-28 x 2-1/4 PT
SKU #291102
Socket Cap Screws 304 SS - 1/4-28 x 2-1/4 PT
SKU #291102
1
$0.79 (0.79/ea)
25
$19.25 (0.77/ea)
100
$74.00 (0.74/ea)
1000
$720.00 (0.72/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-28 x 2-1/2 PT
SKU #29112
Socket Cap Screws 304 SS - 1/4-28 x 2-1/2 PT
SKU #29112
1
$0.81 (0.81/ea)
25
$19.75 (0.79/ea)
100
$59.00 (0.59/ea)
1000
$520.00 (0.52/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-28 x 2-3/4 PT
SKU #29121-02
Socket Cap Screws 304 SS - 1/4-28 x 2-3/4 PT
SKU #29121-02
1
$1.91 (1.91/ea)
25
$46.00 (1.84/ea)
100
$176.00 (1.76/ea)
1000
$1,750.00 (1.75/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-28 x 3 PT
SKU #29122
Socket Cap Screws 304 SS - 1/4-28 x 3 PT
SKU #29122
1
$1.10 (1.1/ea)
25
$23.75 (0.95/ea)
100
$80.00 (0.8/ea)
1000
$700.00 (0.7/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-28 x 3-1/2 PT
SKU #29132
Socket Cap Screws 304 SS - 1/4-28 x 3-1/2 PT
SKU #29132
1
$2.71 (2.71/ea)
25
$62.50 (2.5/ea)
100
$231.00 (2.31/ea)
1000
$2,030.00 (2.03/ea)
Subtotal: $0.00 /
Socket Cap Screws 304 SS - 1/4-28 x 4 PT
SKU #29142
Socket Cap Screws 304 SS - 1/4-28 x 4 PT
SKU #29142
1
$3.93 (3.93/ea)
25
$87.50 (3.5/ea)
100
$296.00 (2.96/ea)
1000
$2,600.00 (2.6/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
$0.65 (0.65/ea)
25
$13.75 (0.55/ea)
100
$45.00 (0.45/ea)
1000
$400.00 (0.4/ea)
Subtotal: $0.00 /
1
$0.70 (0.7/ea)
25
$15.75 (0.63/ea)
100
$60.00 (0.6/ea)
1000
$570.00 (0.57/ea)
Subtotal: $0.00 /
1
NA
25
$2.75 (0.11/ea)
100
$7.00 (0.07/ea)
1000
$60.00 (0.06/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)
28 Per Inch
Thread Standard
UNF
Thread Type
Fine
Tolerance (IFI)
Actual measurements may vary slightly +/- depending on production run within IFI Tolerances