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226761 — WASHER,SHOULDERED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

226761: WASHER,SHOULDERED.

The WASHER,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, hole_diameter: 0.630 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN, heat_treatment: AS FABRICATED, overall_height: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN, surface_finish: 80.0 MICROINCHES BOTTOM, shoulder_height: 0.060 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-512-5458, 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
226761
NSN: 5310-00-512-5458
FSC: 5310 — Nuts and Washers
CAGE: 0AHP5 — CURTISS-WRIGHT CONTROLS, INC. DIV ACTUATION DIVISION (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
hole_diameter0.630 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
heat_treatmentAS FABRICATED
overall_height0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
surface_finish80.0 MICROINCHES BOTTOM
shoulder_height0.060 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
outside_diameter1.000 INCHES NOMINAL IN
style_designatorSHOULDERED
shoulder_diameter0.740 INCHES MINIMUM AND 0.748 INCHES MAXIMUM IN
material_document_and_classificationQQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-512-5458
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 226761 · 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
•
SURFACE FINISH: 80.0 MICROINCHES TOP
•
SHOULDER HEIGHT: 0.060 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
•
HEAT TREATMENT: AS FABRICATED
•
STYLE DESIGNATOR: SHOULDERED
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
SURFACE FINISH80.0 MICROINCHES TOP
SURFACE FINISH50.0 MICROINCHES INNER
SURFACE FINISH80.0 MICROINCHES BOTTOM
OVERALL HEIGHT0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
SHOULDER HEIGHT0.060 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
HEAT TREATMENTAS FABRICATED
STYLE DESIGNATORSHOULDERED
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.000 INCHES NOMINAL IN
SHOULDER DIAMETER0.740 INCHES MINIMUM AND 0.748 INCHES MAXIMUM IN
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 226761?
226761 is a WASHER,SHOULDERED.
What is the NSN for 226761?
226761 is cataloged in the U.S. Government catalog under NSN 5310-00-512-5458. 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.