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1988099 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

1988099: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: PLASTIC OVERALL, hole_diameter: 13.84 MILLIMETERS MINIMUM AND 14.09 MILLIMETERS MAXIMUM MM, overall_diameter: 30.0 MILLIMETERS NOMINAL MM, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND, end_item_identification: CARRIER, PERS M-113A1, M-113A2, M-113A3,HOWITZER,M-109 SERIES. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-407-9027, 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
1988099
NSN: 5310-01-407-9027
FSC: 5310 — Nuts and Washers
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
materialPLASTIC OVERALL
hole_diameter13.84 MILLIMETERS MINIMUM AND 14.09 MILLIMETERS MAXIMUM MM
overall_diameter30.0 MILLIMETERS NOMINAL MM
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identificationCARRIER, PERS M-113A1, M-113A2, M-113A3,HOWITZER,M-109 SERIES
cross-sectional_shape_styleRECTANGULAR
NSN5310-01-407-9027
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1988099 · 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
•
OVERALL DIAMETER: 30.0 MILLIMETERS NOMINAL MM
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: PLASTIC OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 13.84 MILLIMETERS MINIMUM AND 14.09 MILLIMETERS MAXIMUM MM
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER30.0 MILLIMETERS NOMINAL MM
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
END ITEM IDENTIFICATIONCARRIER, PERS M-113A1, M-113A2, M-113A3,HOWITZER,M-109 SERIES
MATERIALPLASTIC OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER13.84 MILLIMETERS MINIMUM AND 14.09 MILLIMETERS MAXIMUM MM
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: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1988099?
1988099 is a WASHER,FLAT.
What is the NSN for 1988099?
1988099 is cataloged in the U.S. Government catalog under NSN 5310-01-407-9027. 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.