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8H8490 — LOCKING PLATE,NUT AND BOLT

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

8H8490: LOCKING PLATE,NUT AND BOLT.

The LOCKING PLATE,NUT AND BOLT is a the manufacturer industrial component. Key specifications include width: 0.625 INCHES NOMINAL IN, material: STEEL, center_radius: 2.344 INCHES NOMINAL IN, plate_thickness: 0.036 INCHES NOMINAL IN, special_features: MOUNTING HOLESSLOTTED 0.344 IN. W X 0.813 IN.

LONG IN, style_designator: RADIUS. This part is cataloged in the U.S. Government catalog under NSN 5340-00-920-7467, 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
8H8490
NSN: 5340-00-920-7467
FSC: 5340 — Hardware, Commercial
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
width0.625 INCHES NOMINAL IN
materialSTEEL
center_radius2.344 INCHES NOMINAL IN
plate_thickness0.036 INCHES NOMINAL IN
special_featuresMOUNTING HOLESSLOTTED 0.344 IN. W X 0.813 IN. LONG IN
style_designatorRADIUS
mounting_hole_diameter0.344 INCHES NOMINAL IN
cross-sectional_shape_styleFLAT
distance_between_mounting_hole_centers3.150 INCHES NOMINAL IN
NSN5340-00-920-7467
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 8H8490 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
•
PLATE THICKNESS: 0.036 INCHES NOMINAL IN
•
DISTANCE BETWEEN MOUNTING HOLE CENTERS: 3.150 INCHES NOMINAL IN
•
CENTER RADIUS: 2.344 INCHES NOMINAL IN
•
STYLE DESIGNATOR: RADIUS
•
MOUNTING HOLE DIAMETER: 0.344 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: FLAT
•
WIDTH: 0.625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
PLATE THICKNESS0.036 INCHES NOMINAL IN
DISTANCE BETWEEN MOUNTING HOLE CENTERS3.150 INCHES NOMINAL IN
CENTER RADIUS2.344 INCHES NOMINAL IN
STYLE DESIGNATORRADIUS
MOUNTING HOLE DIAMETER0.344 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEFLAT
SPECIAL FEATURESMOUNTING HOLESSLOTTED 0.344 IN. W X 0.813 IN. LONG IN
WIDTH0.625 INCHES NOMINAL IN
MATERIALSTEEL
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8H8490?
8H8490 is a LOCKING PLATE,NUT AND BOLT.
What is the NSN for 8H8490?
8H8490 is cataloged in the U.S. Government catalog under NSN 5340-00-920-7467. 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.