Home / UNC Bolts, Nuts and Washers / 4-40 x 3/8 inch UNC Slot Fillister Head Machine Screw in A2 Stainless - ASME B18.6.3

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4-40 x 3/8 inch UNC Slot Fillister Head Machine Screw in A2 Stainless - ASME B18.6.3

UNC slotted fillister machine screws have a large cylindrical head, with a slightly convex top surface. These are similar to a Pan head machine screw, but offer a larger side height. These fillister head machine screws have a height to diameter ratio larger than a pan head machine screw. Fillister head screws are the preferred head type for counterbored holes and can also be used for protecting a surface by raising the level which the screw diver is used to tighten the fixing.

Image of UNC Fillister Head Slotted Machine Screws ASME B18.6.3 in A2 image

technical drawing of UNC Fillister Head Slotted Machine Screws ASME B18.6.3

Technical Summary

nominal diameter

4-40

tpi

threads per inch

head diameter

0.183

head height

0.107

slot thickness

0.039

recess depth

0.048

Standard

ASME B18.6.3

all dimensions in inches

				ASME B18.6.3 UNC Slot Fillister Machine Screw Standard HTML
				ASME B18.6.3 UNC Slot Fillister Machine Screw Standard PDF

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Description	Sale Qtys	Qty	Price	Breakdown	Despatch Estimate
4-40 x 3/8 inch UNC Slot Fillister Head Machine Screw in A2 Stainless WF89678			£1.70

4-40 x 3/8 inch UNC Slot Fillister Head Machine Screw in A2 Stainless WF89678

£1.70

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