NAS1423 at a glance

Specification

Item	Value
Type	Jam nut
Material	Not stated in the documents we hold
Status	Check the current issue of the standard before design use.

Dimension, in	.1900-32	.2500-28	.3125-24	.3750-24	.5000-20	.6250-18	.7500-16
A — Across flats	.375	.438	.500	.563	.750	1.000	1.125
B — Across corners	.411	.484	.555	.628	.844	1.128	1.271
C — Thickness	.053	.056	.058	.060	.093	.093	.125
D — Hole diameter (drilled, 3 places)	.125	.125	.125	.125	.156	.203	.250

Dimensions in inches, as tabulated for the part. Blank cells (—): not stated in the documents we hold; take them from the standard.

Part numbers as listed for the part; the standard governs and may list others.

Part	Meaning
Example	NAS1423-4LH — .2500-28 drilled jam nut, left-hand thread

LH after the dash number indicates a left-hand thread.
The listing gives LH versions for dash 3 to 6 only.
Part number format as commonly written; check the standard for the exact format.
Approved data governs. Use the nut the SRM, drawing or IPC calls for.

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