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P4078899 — PLATE,MOUNTING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

P4078899: PLATE,MOUNTING.

The PLATE,MOUNTING is a the manufacturer industrial component. Key specifications include shape: RECTANGULAR, length: 2.550 INCHES MINIMUM AND 2.550 INCHES MINIMUM AND 2.570 INCHES MAXIMUM2.570 INCHES MAXIMUM IN, material: STEEL UNS K02600, thickness: 0.740 INCHES MINIMUM AND 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM0.760 INCHES MAXIMUM IN, surface_treatment: ZINC, mounting_hole_type: UNTHREADED. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-374-0498, 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
P4078899
NSN: 5340-01-374-0498
FSC: 5340 — Hardware, Commercial
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
shapeRECTANGULAR
length2.550 INCHES MINIMUM AND 2.550 INCHES MINIMUM AND 2.570 INCHES MAXIMUM2.570 INCHES MAXIMUM IN
materialSTEEL UNS K02600
thickness0.740 INCHES MINIMUM AND 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM0.760 INCHES MAXIMUM IN
special_featuresONE ADDITIONAL HOLE,THREADED 0.500-13 UNC 2B; MOUNTING CONFIGURATION: 1.810 IN. C TO C ALONG LG AND 1.625 IN. C TO C ALONG W IN
surface_treatmentZINC
mounting_hole_typeUNTHREADED
mounting_hole_diameter0.338 INCHES MINIMUM AND 0.348 INCHES MAXIMUM ALL HOLES IN
mounting_hole_quantity4
material_document_and_classificationASTMA-36 ASSN STD SINGLE MATERIAL RESPONSE
surface_treatment_document_and_classificationASTM B633, TY 2 ASSN STD SINGLE TREATMENT RESPONSE
NSN5340-01-374-0498
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: P4078899 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: 4
•
LENGTH: 2.550 INCHES MINIMUM AND 2.550 INCHES MINIMUM AND 2.570 INCHES MAXIMUM2.570 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM B633, TY 2 ASSN STD SINGLE TREATMENT RESPONSE
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTMA-36 ASSN STD SINGLE MATERIAL RESPONSE
•
MOUNTING HOLE DIAMETER: 0.338 INCHES MINIMUM AND 0.348 INCHES MAXIMUM ALL HOLES IN
•
SHAPE: RECTANGULAR
•
SURFACE TREATMENT: ZINC
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY4
LENGTH2.550 INCHES MINIMUM AND 2.550 INCHES MINIMUM AND 2.570 INCHES MAXIMUM2.570 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM B633, TY 2 ASSN STD SINGLE TREATMENT RESPONSE
MATERIAL DOCUMENT AND CLASSIFICATIONASTMA-36 ASSN STD SINGLE MATERIAL RESPONSE
MOUNTING HOLE DIAMETER0.338 INCHES MINIMUM AND 0.348 INCHES MAXIMUM ALL HOLES IN
SHAPERECTANGULAR
SPECIAL FEATURESONE ADDITIONAL HOLE,THREADED 0.500-13 UNC 2B; MOUNTING CONFIGURATION: 1.810 IN. C TO C ALONG LG AND 1.625 IN. C TO C ALONG W IN
SURFACE TREATMENTZINC
MATERIALSTEEL UNS K02600
THICKNESS0.740 INCHES MINIMUM AND 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM0.760 INCHES MAXIMUM IN
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is P4078899?
P4078899 is a PLATE,MOUNTING.
What is the NSN for P4078899?
P4078899 is cataloged in the U.S. Government catalog under NSN 5340-01-374-0498. This indicates validated use in U.S. government and defense supply chains.
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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.