MS21907 at a glance

Specification

Item	Value
Type	Fitting, elbow 45°, bulkhead, flareless tube
Status	Check the current issue of the standard before design use.

Dimension, in	-2	-3	-4	-5	-6	-8	-10	-12
OD — Tube O.D.	1/8	3/16	1/4	5/16	3/8	1/2	5/8	3/4
T — Thread T (MIL-S-8879)	.3125-24	.3750-24	.4375-20	.5000-20	.5625-18	.7500-16	.8750-14	1.0625-12
M — M (+.047 / -0)	1.281	1.328	1.453	1.453	1.562	1.812	2.047	2.250
Q — Q (+.047 / -0)	.625	.656	.687	.719	.812	.969	1.062	1.250
V — V	.312	.375	.437	.500	.562	.750	.875	1.062

Dimensions in inches as tabulated in the catalogue listing; the standard governs. Blank cells: not stated in the listing.

Part no.	Size	Tube O.D.	Thread T (MIL-S-8879)
MS21907-2	1/8	1/8	.3125-24
MS21907-3	3/16	3/16	.3750-24
MS21907-4	1/4	1/4	.4375-20
MS21907-5	5/16	5/16	.5000-20
MS21907-6	3/8	3/8	.5625-18
MS21907-8	1/2	1/2	.7500-16
MS21907-10	5/8	5/8	.8750-14
MS21907-12	3/4	3/4	1.0625-12

Part numbers as listed. The standard governs and may list other sizes.

Part	Meaning
Format	MS21907<material><dash>
D	Material: Aluminum 2024
-	Material: Steel
J	Material: Corrosion resistant steel 304
W	Material: Aluminum 7075
Example	MS21907-4 — Steel, 1/4 in tube

M for -4 and -5 is one shared cell (1.453) in the listing, repeated on each row.
V#P (corrosion resistant steel, cadmium plated) is a further listed form.

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MS21907 — Elbow, Bulkhead, Universal, 45°, Flareless Tube — nominal sizes and part numbers.