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177K290H01 — PLATE,MOUNTING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

177K290H01: PLATE,MOUNTING.

The PLATE,MOUNTING is a the manufacturer industrial component. Key specifications include shape: SPECIAL, width: 0.955 INCHES MINIMUM AND 0.955 INCHES MINIMUM AND 0.965 INCHES MAXIMUM0.965 INCHES MAXIMUM IN, length: 2.335 INCHES MINIMUM AND 2.335 INCHES MINIMUM AND 2.345 INCHES MAXIMUM2.345 INCHES MAXIMUM IN, thickness: 0.450 INCHES MINIMUM AND 0.450 INCHES MINIMUM AND 0.460 INCHES MAXIMUM0.460 INCHES MAXIMUM IN, surface_treatment: PASSIVATE, mounting_hole_type: UNTHREADED. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-618-6626, 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
177K290H01
NSN: 5340-01-618-6626
FSC: 5340 — Hardware, Commercial
CAGE: 97942 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN SYSTEMS CORP (USA)
SPECIFICATIONS
shapeSPECIAL
width0.955 INCHES MINIMUM AND 0.955 INCHES MINIMUM AND 0.965 INCHES MAXIMUM0.965 INCHES MAXIMUM IN
length2.335 INCHES MINIMUM AND 2.335 INCHES MINIMUM AND 2.345 INCHES MAXIMUM2.345 INCHES MAXIMUM IN
thickness0.450 INCHES MINIMUM AND 0.450 INCHES MINIMUM AND 0.460 INCHES MAXIMUM0.460 INCHES MAXIMUM IN
surface_treatmentPASSIVATE
mounting_hole_typeUNTHREADED
mounting_hole_diameter0.270 INCHES MINIMUM AND 0.275 INCHES MAXIMUM ALL HOLES IN
mounting_hole_quantity2
end_item_identification1230016143412
part_name_assigned_by_controlling_agencyMOUNTING FOOT
NSN5340-01-618-6626
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 177K290H01 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
•
MOUNTING HOLE QUANTITY: 2
•
LENGTH: 2.335 INCHES MINIMUM AND 2.335 INCHES MINIMUM AND 2.345 INCHES MAXIMUM2.345 INCHES MAXIMUM IN
•
MOUNTING HOLE DIAMETER: 0.270 INCHES MINIMUM AND 0.275 INCHES MAXIMUM ALL HOLES IN
•
SHAPE: SPECIAL
•
SURFACE TREATMENT: PASSIVATE
•
WIDTH: 0.955 INCHES MINIMUM AND 0.955 INCHES MINIMUM AND 0.965 INCHES MAXIMUM0.965 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY2
LENGTH2.335 INCHES MINIMUM AND 2.335 INCHES MINIMUM AND 2.345 INCHES MAXIMUM2.345 INCHES MAXIMUM IN
MOUNTING HOLE DIAMETER0.270 INCHES MINIMUM AND 0.275 INCHES MAXIMUM ALL HOLES IN
SHAPESPECIAL
SURFACE TREATMENTPASSIVATE
WIDTH0.955 INCHES MINIMUM AND 0.955 INCHES MINIMUM AND 0.965 INCHES MAXIMUM0.965 INCHES MAXIMUM IN
PART NAME ASSIGNED BY CONTROLLING AGENCYMOUNTING FOOT
END ITEM IDENTIFICATION1230016143412
THICKNESS0.450 INCHES MINIMUM AND 0.450 INCHES MINIMUM AND 0.460 INCHES MAXIMUM0.460 INCHES MAXIMUM IN
MOUNTING HOLE TYPEUNTHREADED
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
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 177K290H01?
177K290H01 is a PLATE,MOUNTING.
What is the NSN for 177K290H01?
177K290H01 is cataloged in the U.S. Government catalog under NSN 5340-01-618-6626. 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.