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520363 — RETAINER,NUT AND BOLT

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

520363: RETAINER,NUT AND BOLT.

The RETAINER,NUT AND BOLT is a the manufacturer industrial component. Key specifications include material: STEEL, overall_width: 0.520 INCHES NOMINAL IN, overall_height: 0.370 INCHES NOMINAL IN, overall_length: 0.531 INCHES NOMINAL IN, special_features: NUT INCLUDED 0.138-32 UNC 2B RH THD, style_designator: CLIP. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-197-8201, 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
520363
NSN: 5340-01-197-8201
FSC: 5340 — Hardware, Commercial
CAGE: 01014 — AVTRON AEROSPACE INC (USA)
SPECIFICATIONS
materialSTEEL
overall_width0.520 INCHES NOMINAL IN
overall_height0.370 INCHES NOMINAL IN
overall_length0.531 INCHES NOMINAL IN
special_featuresNUT INCLUDED 0.138-32 UNC 2B RH THD
style_designatorCLIP
surface_treatmentPHOSPHATE
material_thickness0.020 INCHES NOMINAL IN
NSN5340-01-197-8201
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 520363 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
KEY FEATURES
•
STYLE DESIGNATOR: CLIP
•
MATERIAL THICKNESS: 0.020 INCHES NOMINAL IN
•
SURFACE TREATMENT: PHOSPHATE
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.370 INCHES NOMINAL IN
STYLE DESIGNATORCLIP
OVERALL LENGTH0.531 INCHES NOMINAL IN
OVERALL WIDTH0.520 INCHES NOMINAL IN
MATERIAL THICKNESS0.020 INCHES NOMINAL IN
SPECIAL FEATURESNUT INCLUDED 0.138-32 UNC 2B RH THD
SURFACE TREATMENTPHOSPHATE
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES 2
C7931-632-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
500K3297Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 520363?
520363 is a RETAINER,NUT AND BOLT.
What parts can replace 520363?
There are 2 known substitutes for 520363: C7931-632-4, 500K3297. Substitute compatibility should be verified for your specific system.
What is the NSN for 520363?
520363 is cataloged in the U.S. Government catalog under NSN 5340-01-197-8201. 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.