15% off select Welch Allyn Parts! Click here.
![Screw, Machine, Flat, Ph, 4-40, .250, Steel Screw, Machine, Flat, Ph, 4-40, .250, Steel](/medias/HR-34457-o1.png?context=bWFzdGVyfGltYWdlc3w1NDk0MHxpbWFnZS9wbmd8YVcxaFoyVnpMMmcxTUM5b09HVXZPRGsxTkRNMk9UazVPRGczT0M1d2JtY3wyZDk5ODA1MjJhNThkNmNiODgyN2U4MjNkYWVkMTM3MTMwYTQxYmI4YjRlYzAxNmJiNTE4NGE3YjNiNzdmODc2)
Screw, Machine, Flat, Ph, 4-40, .250, Steel
Part #: 34457
Obsolete part - No Longer Available
![Screw, Machine, Hex, .250-20, .50, Steel Screw, Machine, Hex, .250-20, .50, Steel](/medias/HR-21913-o1.png?context=bWFzdGVyfGltYWdlc3wyMjY1MzB8aW1hZ2UvcG5nfGFXMWhaMlZ6TDJnME9DOW9Namt2T0RrNU16QTVOVEkxTkRBME5pNXdibWN8NDZiNTE1YzM3M2M3YjQ1NTMxZmE5NTliNWE2Njc3MzEyZWNlYzc5NTAyOTFmMTg0MmExZmJhZGE2ZTNjMDY0Nw)
Screw, Machine, Hex, .250-20, .50, Steel
Part #: 21913
Obsolete part - No Longer Available
![No Image Available](/_ui/responsive/theme-black/images/fallback-image-HR.png)
Screw, High/Low, Pan, Ph, #6, .313, Steel
Part #: 9034905
Obsolete part - No Longer Available
![No Image Available](/_ui/responsive/theme-black/images/fallback-image-HR.png)
Screw, Machine, Hex, 1/4-28, 5/8, Zinc
Part #: 4739
Obsolete part - No Longer Available
![No Image Available](/_ui/responsive/theme-black/images/fallback-image-HR.png)
Screw, Tap, Flat, Ph, #8, 1.250, Steel
Part #: 28619
Obsolete part - No Longer Available
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