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2601099 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

2601099: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include overall_diameter: 4.0 MILLIMETERS NOMINAL MM, special_features: LOCATION OF THIS ITEM ON ASSEMBLY DWG IS FIGURE 10001075, POSITION 581, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND, end_item_identification: FRAME AND BODY GROUP, part_name_assigned_by_controlling_agency: DISK. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-561-3382, 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
2601099
NSN: 5310-01-561-3382
FSC: 5310 — Nuts and Washers
CAGE: 0S131 — HUBTEX NORTH AMERICA, INC. (USA)
SPECIFICATIONS
overall_diameter4.0 MILLIMETERS NOMINAL MM
special_featuresLOCATION OF THIS ITEM ON ASSEMBLY DWG IS FIGURE 10001075, POSITION 581
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identificationFRAME AND BODY GROUP
part_name_assigned_by_controlling_agencyDISK
NSN5310-01-561-3382
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2601099 · 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: 4.0 MILLIMETERS NOMINAL MM
•
PERIPHERAL SHAPE STYLE: ROUND
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER4.0 MILLIMETERS NOMINAL MM
SPECIAL FEATURESLOCATION OF THIS ITEM ON ASSEMBLY DWG IS FIGURE 10001075, POSITION 581
PERIPHERAL SHAPE STYLEROUND
PART NAME ASSIGNED BY CONTROLLING AGENCYDISK
END ITEM IDENTIFICATIONFRAME AND BODY GROUP
CENTER HOLE SHAPE STYLEROUND
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 2601099?
2601099 is a WASHER,FLAT.
What is the NSN for 2601099?
2601099 is cataloged in the U.S. Government catalog under NSN 5310-01-561-3382. 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.