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B2769 — WASHER,SHOULDERED AND RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

B2769: WASHER,SHOULDERED AND RECESSED.

The WASHER,SHOULDERED AND RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL COMP E4340 OVERALL, recess_angle: 90.0 DEGREES NOMINAL, hole_diameter: 2.678 INCHES MINIMUM AND 2.698 INCHES MAXIMUM IN, heat_treatment: NORMALIZED, surface_finish: 64.0 MICROINCHES ALL SURFACES, hardness_rating: 44.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-901-9830, 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
B2769
NSN: 5310-00-901-9830
FSC: 5310 — Nuts and Washers
CAGE: 17472 — EATON AEROSPACE LLC DBA EATON INOAC DIV FUEL & MOTION CONTROL SYSTEMS DIVISION (USA)
SPECIFICATIONS
materialSTEEL COMP E4340 OVERALL
recess_angle90.0 DEGREES NOMINAL
hole_diameter2.678 INCHES MINIMUM AND 2.698 INCHES MAXIMUM IN
heat_treatmentNORMALIZED
surface_finish64.0 MICROINCHES ALL SURFACES
hardness_rating44.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM
shoulder_height0.031 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
outside_diameter3.618 INCHES MINIMUM AND 3.623 INCHES MAXIMUM IN
style_designatorSHOULDERED AND RECESSED
shoulder_diameter2.774 INCHES MINIMUM AND 2.777 INCHES MAXIMUM IN
material_thickness0.073 INCHES MINIMUM AND 0.083 INCHES MAXIMUM IN
material_document_and_classificationMIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-901-9830
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: B2769 · 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: 64.0 MICROINCHES ALL SURFACES
•
SHOULDER HEIGHT: 0.031 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
•
HEAT TREATMENT: NORMALIZED
•
HARDNESS RATING: 44.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: SHOULDERED AND RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 3.618 INCHES MINIMUM AND 3.623 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.073 INCHES MINIMUM AND 0.083 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH64.0 MICROINCHES ALL SURFACES
SHOULDER HEIGHT0.031 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
HEAT TREATMENTNORMALIZED
HARDNESS RATING44.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORSHOULDERED AND RECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER3.618 INCHES MINIMUM AND 3.623 INCHES MAXIMUM IN
MATERIAL THICKNESS0.073 INCHES MINIMUM AND 0.083 INCHES MAXIMUM IN
SHOULDER DIAMETER2.774 INCHES MINIMUM AND 2.777 INCHES MAXIMUM IN
MATERIALSTEEL COMP E4340 OVERALL
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 B2769?
B2769 is a WASHER,SHOULDERED AND RECESSED.
What is the NSN for B2769?
B2769 is cataloged in the U.S. Government catalog under NSN 5310-00-901-9830. 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.