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6511-20-700-7101 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

6511-20-700-7101: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 2.780 INCHES NOMINAL IN, outside_diameter: 3.250 INCHES NOMINAL IN, special_features: KEYS PRE-BENT 45 DEGREES, style_designator: KEY, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-924-8048, 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
6511-20-700-7101
NSN: 5310-00-924-8048
FSC: 5310 — Nuts and Washers
CAGE: 54878 — ROTAIR AEROSPACE CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter2.780 INCHES NOMINAL IN
outside_diameter3.250 INCHES NOMINAL IN
special_featuresKEYS PRE-BENT 45 DEGREES
style_designatorKEY
surface_treatmentPASSIVATE OVERALL
material_thickness0.063 INCHES NOMINAL IN
width_between_flats2.659 INCHES MINIMUM AND 2.664 INCHES MAXIMUM IN
external_key_quantity17
external_straight_key_width0.230 INCHES NOMINAL IN
overall_distance_including_keys3.812 INCHES NOMINAL IN
material_document_and_classificationMIL-S-5059,1/4 HARD MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-924-8048
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 6511-20-700-7101 · 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
•
OVERALL DISTANCE INCLUDING KEYS: 3.812 INCHES NOMINAL IN
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5059,1/4 HARD MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 3.250 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.063 INCHES NOMINAL IN
•
WIDTH BETWEEN FLATS: 2.659 INCHES MINIMUM AND 2.664 INCHES MAXIMUM IN
•
EXTERNAL STRAIGHT KEY WIDTH: 0.230 INCHES NOMINAL IN
•
EXTERNAL KEY QUANTITY: 17
TECHNICAL CHARACTERISTICS
OVERALL DISTANCE INCLUDING KEYS3.812 INCHES NOMINAL IN
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5059,1/4 HARD MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER3.250 INCHES NOMINAL IN
MATERIAL THICKNESS0.063 INCHES NOMINAL IN
WIDTH BETWEEN FLATS2.659 INCHES MINIMUM AND 2.664 INCHES MAXIMUM IN
EXTERNAL STRAIGHT KEY WIDTH0.230 INCHES NOMINAL IN
EXTERNAL KEY QUANTITY17
SPECIAL FEATURESKEYS PRE-BENT 45 DEGREES
SURFACE TREATMENTPASSIVATE 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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6511-20-700-7101?
6511-20-700-7101 is a WASHER,KEY.
What is the NSN for 6511-20-700-7101?
6511-20-700-7101 is cataloged in the U.S. Government catalog under NSN 5310-00-924-8048. 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.