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Socket Cap Screws, Black Oxide Stainless Steel 18-8, 1/4"-20

Socket Cap Screws, Black Oxide Stainless Steel 18-8, 1/4"-20

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

1/4"-20 Black Oxide Knurled Head Socket cap screws are machine screws with an Allen drive style.

  • Commonly referred to as allen bolts, socket head cap screws, or socket head screws
  • Externally grooved cap head
  • Can be driven manually, or with a Hex Allen Bit or Key
  • Cylindrical head and hexagonal drive style
  • Sleek black finished look
  • Type of threaded fastener whose head diameter is nominally 1.5 times or more that of the screw shank (major) diameter
Black Oxide Stainless Steel Screws are used in applications looking for a sleek black look, as well as a mild layer of additional protection. Black Oxide Stainless Steel Socket Cap Screws are more corrosion and abrasion resistant than standard 18-8 stainless steel. Black Oxide Stainless Steel is often used in the automotive industry and on tool, knife and firearm builds.

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/SKU
Select Package Quantity Price
SubTotal
1/4"-20 x 3/8" FT
SKU #12210002
1/4"-20 x 3/8" FT
SKU #12210002
1 $0.46 (0.46/ea)
100 $32.00 (0.32/ea)
1000 $300.00 (0.3/ea)
Subtotal: $0.00 /
1/4"-20 x 1/2" FT
SKU #12210014
1/4"-20 x 1/2" FT
SKU #12210014
1 $0.51 (0.51/ea)
100 $35.00 (0.35/ea)
1000 $330.00 (0.33/ea)
Subtotal: $0.00 /
1/4"-20 x 5/8" FT
SKU #12210026
1/4"-20 x 5/8" FT
SKU #12210026
1 $0.56 (0.56/ea)
100 $39.00 (0.39/ea)
1000 $370.00 (0.37/ea)
Subtotal: $0.00 /
1/4"-20 x 3/4" FT
SKU #12210038
1/4"-20 x 3/4" FT
SKU #12210038
1 $0.58 (0.58/ea)
100 $40.00 (0.4/ea)
1000 $380.00 (0.38/ea)
Subtotal: $0.00 /
1/4"-20 x 1" FT
SKU #12210050
1/4"-20 x 1" FT
SKU #12210050
1 $0.70 (0.7/ea)
100 $49.00 (0.49/ea)
1000 $460.00 (0.46/ea)
Subtotal: $0.00 /
1/4"-20 x 1-1/4" PT
SKU #12210062
1/4"-20 x 1-1/4" PT
SKU #12210062
1 $0.79 (0.79/ea)
100 $56.00 (0.56/ea)
1000 $520.00 (0.52/ea)
Subtotal: $0.00 /
1/4"-20 x 1-1/2" PT
SKU #12210074
1/4"-20 x 1-1/2" PT
SKU #12210074
1 $1.00 (1/ea)
100 $70.00 (0.7/ea)
1000 $660.00 (0.66/ea)
Subtotal: $0.00 /

Frequently Used With

Flat Washers 304 SS - 1/4" (.281 ID x 5/8 OD x .050 Thick)
Flat Washers 304 SS - 1/4" (.281 ID x 5/8 OD x .050 Thick) 1000-105142
Flat Washers 304 SS - 1/4
1 $0.09 (0.09/ea)
100 $3.00 (0.03/ea)
1000 $20.00 (0.02/ea)
Subtotal: $0.00
Lock Washer Split Ring 304 SS - 1/4" (.252 ID x .487 OD x .062 Thick)
Lock Washer Split Ring 304 SS - 1/4" (.252 ID x .487 OD x .062 Thick) 108102
Lock Washer Split Ring 304 SS - 1/4
1 $0.08 (0.08/ea)
100 $4.00 (0.04/ea)
1000 $30.00 (0.03/ea)
Subtotal: $0.00
Hex Finish Nuts 304 SS - 1/4"-20 (7/16" Flats x 7/32" Thick)
Hex Finish Nuts 304 SS - 1/4"-20 (7/16" Flats x 7/32" Thick) 123002
Hex Finish Nuts 304 SS - 1/4
1 $0.09 (0.09/ea)
100 $6.00 (0.06/ea)
1000 $50.00 (0.05/ea)
Subtotal: $0.00
Nylon Lock Nuts, Stainless Steel 304, 1/4-20 (.439 Flats x .328 Height)
Nylon Lock Nuts, Stainless Steel 304, 1/4-20 (.439 Flats x .328 Height) 128092
Nylon Lock Nuts, Stainless Steel 304, 1/4-20 (.439 Flats x .328 Height)
1 $0.15 (0.15/ea)
100 $11.00 (0.11/ea)
1000 $90.00 (0.09/ea)
Subtotal: $0.00
Hex Socket Head Power Bits - 3/16 - Length 2"
Hex Socket Head Power Bits - 3/16 - Length 2" 1050-800-0041
Hex Socket Head Power Bits - 3/16 - Length 2
1 $3.15 (3.15/ea)
10 $29.80 (2.98/ea)
50 $129.50 (2.59/ea)
Subtotal: $0.00
Hex Allen Key Long Arm 3/16" Black Alloy
Hex Allen Key Long Arm 3/16" Black Alloy 1055-10022-0002
Hex Allen Key Long Arm 3/16
1 $0.74 (0.74/ea)
100 $69.00 (0.69/ea)
1000 $650.00 (0.65/ea)
Subtotal: $0.00
Chrome Bolt Covers, Maltese Cross, For Button Socket Caps, 1/4"
Chrome Bolt Covers, Maltese Cross, For Button Socket Caps, 1/4" 1111-072-002
Chrome Bolt Covers, Maltese Cross, For Button Socket Caps, 1/4
1 $8.46 (8.46/ea)
10 $71.80 (7.18/ea)
100 $661.00 (6.61/ea)
Subtotal: $0.00
Product Specifications
Product Specifications
Additional Sizing Info
Lengths over 1" will have a Shoulder / Partial Thread
Chamfer on Radius
Max 0.008
Color
Black
Corrosion Resistant
Yes
Drive Style
Internal Hex (Allen)
Finish
Black Oxide
Grade
18-8
Head Diameter
Max 0.375 - Min 0.365
Head Style
Socket Cap
Hex Drive
3/16"
Material
Stainless Steel
Overall Head Height
Max 0.250 - Min 0.244
Product Type
Socket Cap Screw
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

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