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6B7769 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

6B7769: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1115 OVERALL, recess_angle: 90.0 DEGREES NOMINAL, hole_diameter: 1.625 INCHES MINIMUM AND 1.628 INCHES MAXIMUM IN, recess_diameter: 1.752 INCHES NOMINAL IN, outside_diameter: 2.438 INCHES MINIMUM AND 2.439 INCHES MAXIMUM IN, style_designator: RECESSED. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-550-0766, 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
6B7769
NSN: 5310-00-550-0766
FSC: 5310 — Nuts and Washers
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL COMP 1115 OVERALL
recess_angle90.0 DEGREES NOMINAL
hole_diameter1.625 INCHES MINIMUM AND 1.628 INCHES MAXIMUM IN
recess_diameter1.752 INCHES NOMINAL IN
outside_diameter2.438 INCHES MINIMUM AND 2.439 INCHES MAXIMUM IN
style_designatorRECESSED
material_thickness0.594 INCHES NOMINAL IN
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-550-0766
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 6B7769 · 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
•
STYLE DESIGNATOR: RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 2.438 INCHES MINIMUM AND 2.439 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.594 INCHES NOMINAL IN
•
RECESS DIAMETER: 1.752 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 1115 OVERALL
•
HOLE DIAMETER: 1.625 INCHES MINIMUM AND 1.628 INCHES MAXIMUM IN
•
RECESS ANGLE: 90.0 DEGREES NOMINAL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORRECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER2.438 INCHES MINIMUM AND 2.439 INCHES MAXIMUM IN
MATERIAL THICKNESS0.594 INCHES NOMINAL IN
RECESS DIAMETER1.752 INCHES NOMINAL IN
MATERIALSTEEL COMP 1115 OVERALL
HOLE DIAMETER1.625 INCHES MINIMUM AND 1.628 INCHES MAXIMUM IN
RECESS ANGLE90.0 DEGREES NOMINAL
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6B7769?
6B7769 is a WASHER,RECESSED.
What is the NSN for 6B7769?
6B7769 is cataloged in the U.S. Government catalog under NSN 5310-00-550-0766. 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.