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6565-21-110-9107 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

6565-21-110-9107: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OVERALL, hole_diameter: 0.233 INCHES MINIMUM AND 0.238 INCHES MAXIMUM IN, outside_diameter: 0.4068 INCHES MINIMUM AND 0.4073 INCHES MAXIMUM IN, special_features: OD CHAMFERED BOTH SIDES 0.010 IN. BY 45 DEG IN, style_designator: RECESSED BOTH SIDES, top_recess_angle: 45.0 DEGREES NOMINAL.

This part is cataloged in the U.S. Government catalog under NSN 5310-00-945-2490, 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
6565-21-110-9107
NSN: 5310-00-945-2490
FSC: 5310 — Nuts and Washers
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OVERALL
hole_diameter0.233 INCHES MINIMUM AND 0.238 INCHES MAXIMUM IN
outside_diameter0.4068 INCHES MINIMUM AND 0.4073 INCHES MAXIMUM IN
special_featuresOD CHAMFERED BOTH SIDES 0.010 IN. BY 45 DEG IN
style_designatorRECESSED BOTH SIDES
top_recess_angle45.0 DEGREES NOMINAL
material_thickness0.085 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
bottom_recess_angle45.0 DEGREES NOMINAL
top_recess_diameter0.283 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN
bottom_recess_diameter0.283 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN
material_document_and_classificationMIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
NSN5310-00-945-2490
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 6565-21-110-9107 · 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
•
TOP RECESS DIAMETER: 0.283 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN
•
BOTTOM RECESS DIAMETER: 0.283 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN
•
TOP RECESS ANGLE: 45.0 DEGREES NOMINAL
•
STYLE DESIGNATOR: RECESSED BOTH SIDES
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.4068 INCHES MINIMUM AND 0.4073 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.085 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
•
BOTTOM RECESS ANGLE: 45.0 DEGREES NOMINAL
TECHNICAL CHARACTERISTICS
TOP RECESS DIAMETER0.283 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN
BOTTOM RECESS DIAMETER0.283 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN
TOP RECESS ANGLE45.0 DEGREES NOMINAL
STYLE DESIGNATORRECESSED BOTH SIDES
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.4068 INCHES MINIMUM AND 0.4073 INCHES MAXIMUM IN
MATERIAL THICKNESS0.085 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
BOTTOM RECESS ANGLE45.0 DEGREES NOMINAL
SPECIAL FEATURESOD CHAMFERED BOTH SIDES 0.010 IN. BY 45 DEG IN
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
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 6565-21-110-9107?
6565-21-110-9107 is a WASHER,RECESSED.
What is the NSN for 6565-21-110-9107?
6565-21-110-9107 is cataloged in the U.S. Government catalog under NSN 5310-00-945-2490. This indicates validated use in U.S. government and defense supply chains.
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