Stainless Socket Button Head Vented Cap Screw: 2-56 x 1/4

SKU
J30-737-06004
Special Price .90¢    Regular Price $ 1.29

The J30-737-06004 from Industrial Hardware and Specialties is a chemically cleaned, stainless type 18-8, vented button head cap screw. The vented cap screw is 1/4" ( 0.25 ) long with a diameter thread pitch of 2-56 ( UNRC-3A ). The Stainless Socket Button Head Vented Cap Screw: 2-56 x 1/4 requires a 0.050" hex socket for installation. The hex socket button head vented cap screw is drilled with a 0.028" hole to allow for trapped gases to escape. It meets fastener standard ANSI/ASME B18.3, and thread standard ANSI/ASME B1.1.

Attributes

Industrial Hardware and Specialties vented caps screws are ideally suited for fastening inside high vacuum (UV), or ultra high vacuum (UHV) equipment as well as other high pressure environments. The Stainless Socket Button Head Vented Cap Screw: 2-56 x 1/4 comes with a 0.028" hole drilled through it's head. This feature helps to eliminate the possibility of virtual leaks as the hole allows gas molecules to vent into the vacuum system through the top of fastener and out of the system. This vented cap screw is made from stainless steel type 18-8 with a chemically cleaned finish. The J30-737-06004 has a button head, is 1/4" ( 0.25 ) long with a diameter thread pitch of 2-56 ( UNRC-3A ). The Stainless Socket Button Head Vented Cap Screw: 2-56 x 1/4 requires a 0.050" hex socket for installation.

More Information
VendorInSpec
Fastener Type Vented Cap Screw
Fastener StandardANSI/ASME B18.3
Drive TypeHex Socket
Head StyleButton Head
Diameter Thread Pitch (in)2-56
Thread Class FitUNRC-3A
Length (in.)1/4
Point TypeFlat or Slightly Concave & Chamfered
MaterialStainless Type 18-8
FinishChemically Cleaned
Thread Standard ANSI/ASME B1.1
Vent Hole Dia. (Nominal) (in.)0.028
Hole Tolerance (in.)+0.003 / -0.010
Drive Size0.050
Head Height (in.)0.046 / 0.038
Head Diameter ⌀0.164 / 0.156