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4491149-68SQ — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

4491149-68SQ: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include end_item_identification: MAST ANTENNA SYSTEM ANBRA34, criticality_code_justification: ZZZY, part_name_assigned_by_controlling_agency: INNER MAST UPPER BEARING ASSEMBLY (DRAWING NAME), reference_number_differentiating_characteristics: QUALITY ASSURANCE TESTED FOR SUBMARINE ANTENNA APPLICATION. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-537-6089, 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
4491149-68SQ
NSN: 5305-01-537-6089
FSC: 5305 — Screws
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
end_item_identificationMAST ANTENNA SYSTEM ANBRA34
criticality_code_justificationZZZY
part_name_assigned_by_controlling_agencyINNER MAST UPPER BEARING ASSEMBLY (DRAWING NAME)
reference_number_differentiating_characteristicsQUALITY ASSURANCE TESTED FOR SUBMARINE ANTENNA APPLICATION
NSN5305-01-537-6089
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 4491149-68SQ · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: QUALITY ASSURANCE TESTED FOR SUBMARINE ANTENNA APPLICATION
TECHNICAL CHARACTERISTICS
CRITICALITY CODE JUSTIFICATIONZZZY
PART NAME ASSIGNED BY CONTROLLING AGENCYINNER MAST UPPER BEARING ASSEMBLY (DRAWING NAME)
END ITEM IDENTIFICATIONMAST ANTENNA SYSTEM ANBRA34
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSQUALITY ASSURANCE TESTED FOR SUBMARINE ANTENNA APPLICATION
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES 1
4491149-68Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4491149-68SQ?
4491149-68SQ is a SCREW,CAP,SOCKET HEAD.
What parts can replace 4491149-68SQ?
There is 1 known substitute for 4491149-68SQ: 4491149-68. Substitute compatibility should be verified for your specific system.
What is the NSN for 4491149-68SQ?
4491149-68SQ is cataloged in the U.S. Government catalog under NSN 5305-01-537-6089. 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.