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Socket screws
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Socket button head
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Stainless steel 316
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Coarse (standard) thread
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1/4"-20
Socket button head, Stainless steel 316, 1/4"-20 x 2-1/2"
Prod. #
Length
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Price
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21747
2-1/2"
$1.44
/ ea
$48.16
/ 50
$419.00
/ 500
$1.44
/ ea
$48.16
/ 50
$419.00
/ 500
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Product details
Bolt Depot product#
21747
Units
US
Category
Socket screws
Screws with an Allen wrench drive.
Head style
Button
Button heads are rounded and low profile.
Drive type
Allen
Allen (hex socket) drive is a six-sided recess for use with an Allen wrench (hex key).
Material
Stainless steel
Grade
316
A highly corrosion resistant grade of stainless steel. Ideal in salt water and chlorine environments.
Thread density
Coarse
Diameter
1/4"
Thread count
20
Length
2-1/2"
Thread direction
Right hand
Drive depth
Minimum
0.087"
Head diameter
0.419"
-
0.437"
Head height
0.122"
-
0.132"
Drive size
5/32"
Fully threaded
Yes
Dimensional standard
ASME B18.3
Additional information
US Socket button head sizes
What driver size do I need?
Matching Products
Click on a product # for additional info
Prod. #
Description
Buy
15983
Hex nuts, Stainless steel 316, 1/4"-20
A standard six sided nut.
Add
$0.12
/ ea
$7.25
/
100
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16008
Hex nylon insert lock nuts, Stainless steel 316, 1/4"-20
A hex nut with a nylon ring to resist loosening.
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100
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16019
Flat washers, Stainless steel 316, 1/4"
General use flat washer
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Bits for Allen drive screws (a.k.a. socket products).