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SMB321391 — SMB321391

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

SMB321391: SMB321391.

The SMB321391 is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1095, construction: ONE-PIECE, hardness_rating: 48.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM, outside_diameter: 0.390 INCHES MINIMUM AND 0.422 INCHES MAXIMUM IN, aperture_diameter: 0.209 INCHES MINIMUM AND 0.229 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5365-00-705-6307, 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
SMB321391
NSN: 5365-00-705-6307
FSC: 5365 — Bushings, Rings, Shims, and Spacers
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
materialSTEEL COMP 1095
constructionONE-PIECE
hardness_rating48.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM
outside_diameter0.390 INCHES MINIMUM AND 0.422 INCHES MAXIMUM IN
aperture_diameter0.209 INCHES MINIMUM AND 0.229 INCHES MAXIMUM IN
NSN5365-00-705-6307
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SMB321391 TITLE COMPONENT PN SMB321391 MFR SMB321391
KEY FEATURES
•
HARDNESS RATING: 48.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM
•
OUTSIDE DIAMETER: 0.390 INCHES MINIMUM AND 0.422 INCHES MAXIMUM IN
•
APERTURE DIAMETER: 0.209 INCHES MINIMUM AND 0.229 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 1095
•
CONSTRUCTION: ONE-PIECE
TECHNICAL CHARACTERISTICS
HARDNESS RATING48.0 ROCKWELL C MINIMUM AND 51.0 ROCKWELL C MAXIMUM
OUTSIDE DIAMETER0.390 INCHES MINIMUM AND 0.422 INCHES MAXIMUM IN
APERTURE DIAMETER0.209 INCHES MINIMUM AND 0.229 INCHES MAXIMUM IN
MATERIALSTEEL COMP 1095
CONSTRUCTIONONE-PIECE
SUBSTITUTES & CROSS-REFERENCES 2
56546Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
5018-298Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SMB321391?
SMB321391 is a SMB321391.
What parts can replace SMB321391?
There are 2 known substitutes for SMB321391: 56546, 5018-298. Substitute compatibility should be verified for your specific system.
What is the NSN for SMB321391?
SMB321391 is cataloged in the U.S. Government catalog under NSN 5365-00-705-6307. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.