MS14155 at a glance

Specification

Item	Value
Type	Washer, recessed, countersunk both sides
Material	For bolts and nuts up to and including 180 ksi
Status	Check the current issue before design use.

Dimension, in	1/4	5/16	3/8	7/16	1/2
B — B	.500	.615	.761	.873	.999
B tolerance	± .005	± .005	± .005	± .005	± .005
D — D	.253	.316	.378	.441	.503
D tolerance	± .002	± .002	± .002	± .002	± .002
ID — I.D.	.342	.404	.499	.561	.624
V — V	.119	.119	.151	.151	.156

Dimensions as listed. Blank cells (shown as a dash): not stated in the documents we hold; take them from the standard.

Part no.	Size	B, in (± .005)	D, in (± .002)	I.D., in (± .005)	V, in (± .005 to ± .007)
MS14155-4	1/4	.500	.253	.342	.119
MS14155-5	5/16	.615	.316	.404	.119
MS14155-6	3/8	.761	.378	.499	.151
MS14155-7	7/16	.873	.441	.561	.151
MS14155-8	1/2	.999	.503	.624	.156

Part numbers commonly stocked. The standard governs and may list others.

Part	Meaning
Example	MS14155-4 — 1/4 nominal size

Tolerances as listed: B ± .005, D ± .002, I.D. ± .005; V ± .005 on -4 and -5, ± .007 on -6, -7 and -8.
The listing shows a 45° countersink on both faces (± 1°) and a V dimension; the letters follow the listing, check them against the standard.

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MS14155 — Washer, Recessed, Countersunk on Both Surfaces, for Wheel Bolts and Nuts — nominal sizes and part numbers.

Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.