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MM500578 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

MM500578: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include special_features: CAGE 1TGK4 IS ONLY A DISTRIBUTOR. THE OEM IS IN JAPAN.

OEM CAGE IS UNKNOWN AND WAS NOT PROVIDED., supplementary_features: NEXT ASSY FUEL INJ PUMP ASSY PART NO 316B65-14090, end_item_identification: NIIN 016179405 COMPRESSOR,DIVE TYPE 1, part_name_assigned_by_controlling_agency: WASHER,COPPER PLATE. This part is cataloged in the U.S. Government catalog under NSN 5310-01-644-8542, 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
MM500578
NSN: 5310-01-644-8542
FSC: 5310 — Nuts and Washers
CAGE: 1TGK4 — MITSUBISHI HEAVY INDUSTRIES AMERICA INC DIV MACHINE TOOL DIVISION (USA)
SPECIFICATIONS
special_featuresCAGE 1TGK4 IS ONLY A DISTRIBUTOR. THE OEM IS IN JAPAN. OEM CAGE IS UNKNOWN AND WAS NOT PROVIDED.
supplementary_featuresNEXT ASSY FUEL INJ PUMP ASSY PART NO 316B65-14090
end_item_identificationNIIN 016179405 COMPRESSOR,DIVE TYPE 1
part_name_assigned_by_controlling_agencyWASHER,COPPER PLATE
NSN5310-01-644-8542
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MM500578 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SUPPLEMENTARY FEATURES: NEXT ASSY FUEL INJ PUMP ASSY PART NO 316B65-14090
TECHNICAL CHARACTERISTICS
SUPPLEMENTARY FEATURESNEXT ASSY FUEL INJ PUMP ASSY PART NO 316B65-14090
SPECIAL FEATURESCAGE 1TGK4 IS ONLY A DISTRIBUTOR. THE OEM IS IN JAPAN. OEM CAGE IS UNKNOWN AND WAS NOT PROVIDED.
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER,COPPER PLATE
END ITEM IDENTIFICATIONNIIN 016179405 COMPRESSOR,DIVE TYPE 1
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
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 MM500578?
MM500578 is a WASHER,FLAT.
What is the NSN for MM500578?
MM500578 is cataloged in the U.S. Government catalog under NSN 5310-01-644-8542. 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.