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34D266 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

34D266: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, recess_depth: 0.023 INCHES NOMINAL IN, hole_diameter: 0.540 INCHES NOMINAL IN, heat_treatment: AS FABRICATED, surface_finish: 80.0 MICROINCHES BOTTOM, outside_diameter: 0.875 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-554-2395, 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
34D266
NSN: 5310-00-554-2395
FSC: 5310 — Nuts and Washers
CAGE: 0AHP5 — CURTISS-WRIGHT CONTROLS, INC. DIV ACTUATION DIVISION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
recess_depth0.023 INCHES NOMINAL IN
hole_diameter0.540 INCHES NOMINAL IN
heat_treatmentAS FABRICATED
surface_finish80.0 MICROINCHES BOTTOM
outside_diameter0.875 INCHES NOMINAL IN
style_designatorRECESSED BOTH SIDES
top_recess_angle45.0 DEGREES NOMINAL
surface_treatmentSILVER OVERALL
material_thickness0.105 INCHES NOMINAL IN
bottom_recess_angle45.0 DEGREES NOMINAL
top_recess_diameter0.570 INCHES MINIMUM AND 0.600 INCHES MAXIMUM IN
NSN5310-00-554-2395
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 34D266 · 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
•
TOP RECESS DIAMETER: 0.570 INCHES MINIMUM AND 0.600 INCHES MAXIMUM IN
•
BOTTOM RECESS DIAMETER: 0.570 INCHES MINIMUM AND 0.600 INCHES MAXIMUM IN
•
HEAT TREATMENT: AS FABRICATED
•
TOP RECESS ANGLE: 45.0 DEGREES NOMINAL
•
STYLE DESIGNATOR: RECESSED BOTH SIDES
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5640 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
SURFACE FINISH80.0 MICROINCHES TOP
SURFACE FINISH80.0 MICROINCHES BOTTOM
TOP RECESS DIAMETER0.570 INCHES MINIMUM AND 0.600 INCHES MAXIMUM IN
BOTTOM RECESS DIAMETER0.570 INCHES MINIMUM AND 0.600 INCHES MAXIMUM IN
HEAT TREATMENTAS FABRICATED
TOP RECESS ANGLE45.0 DEGREES NOMINAL
STYLE DESIGNATORRECESSED BOTH SIDES
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5640 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.875 INCHES NOMINAL IN
RECESS DEPTH0.023 INCHES NOMINAL 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: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 34D266?
34D266 is a WASHER,RECESSED.
What is the NSN for 34D266?
34D266 is cataloged in the U.S. Government catalog under NSN 5310-00-554-2395. 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.