Cap Nut Open Washer Base
HyperLink PDF Spec Sheet



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Part Number Thread Size Width
Across
Flats 		Height Hex
Height 		Washer
Height 		Washe
Diameter
A B C E F
BF 296417 #10-24 0.375 0.312 0.160 0.035 0.440
BF 296418 #10-32 0.375 0.312 0.160 0.035 0.440
BF 296521 1/4-20 0.437 0.406 0.164 0.040 0.512
BF 296521-N 1/4-20 0.437 0.406 0.164 0.040 0.512
BF 296623 5/16-18 0.562 0.406 0.188 0.045 0.657
Full Washer Base
BF 297421 1/4-20 0.375 0.312 0.164 0.040 0.593

part image

Low cost zinc alloy open end cap nuts permit the use of the same part when thickness of the component parts to be fastened varies. The generous dimensions of the washer base will compensate for holes in the component parts which are slightly oversized.

part Image
Full Washer Base


Material and Thread Information
Material: Zinc Alloy SAE 903
Finish: Plain, Unless Specified
Threads: Unified Standard Class 2B ASME B 1.1-2003