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749502 — SCREW ASSEMBLY,PANEL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

749502: SCREW ASSEMBLY,PANEL.

The SCREW ASSEMBLY,PANEL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, special_features: PART OF ASSEMBLY USED ON AN NSSN DC POWER DISTRIBUTION SWITCHBOARD, 3H-5H, thread_direction: RIGHT-HAND, end_item_identification: NAVY EQUIPMENT, nominal_thread_diameter: 0.375 INCHES IN, thread_quantity_per_inch: 16. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-477-4411, 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
749502
NSN: 5340-01-477-4411
NIINs: 014774411, 014774461
FSC: 5340 — Hardware, Commercial
CAGE: 30086 — L3HARRIS MARITIME POWER & ENERGY SOLUTIONS, INC. DBA SPD ELECTRICAL SYSTEMS, INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
special_featuresPART OF ASSEMBLY USED ON AN NSSN DC POWER DISTRIBUTION SWITCHBOARD, 3H-5H
thread_directionRIGHT-HAND
end_item_identificationNAVY EQUIPMENT
nominal_thread_diameter0.375 INCHES IN
thread_quantity_per_inch16
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
material_document_and_classificationASTM-A108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5340-01-477-4411
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 749502 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
SUBSTITUTES & CROSS-REFERENCES 1
749502PC85Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 749502?
749502 is a SCREW ASSEMBLY,PANEL.
What parts can replace 749502?
There is 1 known substitute for 749502: 749502PC85. Substitute compatibility should be verified for your specific system.
What is the NSN for 749502?
749502 is cataloged in the U.S. Government catalog under NSN 5340-01-477-4411. 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.