MS21090-0838 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

MS21090-0838: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: PAN, head_height: 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.306 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN, thread_length: 0.385 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-078-0244, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS

MS21090-0838

NSN: 5305-00-078-0244
FSC: 5305 — Screws
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)

SPECIFICATIONS

material	STEEL OVERALL
head_style	PAN
head_height	0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
thread_class	2A A
head_diameter	0.306 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN
thread_length	0.385 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN
fastener_length	0.469 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
locking_feature	PATCH OR PELLET OR STRIP THREADS
thread_direction	RIGHT-HAND
surface_treatment	CADMIUM AND CHROMATE OVERALL
internal_drive_style	CROSS RECESS TYPE 1
nominal_thread_diameter	0.164 INCHES IN
NSN	5305-00-078-0244

COMPONENT DIAGRAM

KEY FEATURES

•

HEAD HEIGHT: 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN

•

FASTENER LENGTH: 0.469 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

THREAD LENGTH: 0.385 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN

•

MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A576 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OR QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL

•

NOMINAL THREAD DIAMETER: 0.164 INCHES IN

•

HEAD STYLE: PAN

•

THREAD DIRECTION: RIGHT-HAND

TECHNICAL CHARACTERISTICS

HEAD HEIGHT	0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM IN
FASTENER LENGTH	0.469 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416 TY2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH	0.385 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A576 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OR QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER	0.164 INCHES IN
HEAD STYLE	PAN
THREAD DIRECTION	RIGHT-HAND
LOCKING FEATURE	PATCH OR PELLET OR STRIP THREADS
SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL

SUBSTITUTES & CROSS-REFERENCES 2

24394-0007Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LK21090-0838Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusCancelled· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is MS21090-0838?

MS21090-0838 is a SCREW,CAP,SOCKET HEAD.

What parts can replace MS21090-0838?

There are 2 known substitutes for MS21090-0838: 24394-0007, LK21090-0838. Substitute compatibility should be verified for your specific system.

What is the NSN for MS21090-0838?

MS21090-0838 is cataloged in the U.S. Government catalog under NSN 5305-00-078-0244. This indicates validated use in U.S. government and defense supply chains.

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