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6560-21 — OSCILLATOR,NONCRYSTAL CONTROLLED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

6560-21: OSCILLATOR,NONCRYSTAL CONTROLLED.

OSCILLATOR,NONCRYSTAL CONTROLLED. Key specifications include material: STEEL CORROSION RESISTING OVERALL, hole_diameter: 0.188 INCHES NOMINAL IN, overall_width: 5.220 INCHES NOMINAL IN, overall_height: 17.380 INCHES NOMINAL IN, overall_length: 19.000 INCHES NOMINAL IN, outside_diameter: 0.312 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-252-0212, 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
6560-21
NSN: 5310-00-252-0212
NIINs: 002520212, 004976283, 013572523
FSC: 5310 — Nuts and Washers
CAGE: 74025 — MARATHONNORCO AEROSPACE, INC. DBA MARATHON POWER TECHNOLOGIES COMPANY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
hole_diameter0.188 INCHES NOMINAL IN
overall_width5.220 INCHES NOMINAL IN
overall_height17.380 INCHES NOMINAL IN
overall_length19.000 INCHES NOMINAL IN
outside_diameter0.312 INCHES NOMINAL IN
style_designatorSPLIT HELICAL-RIGHT HAND
basic_shape_styleRECTANGULAR OR SQUARE
material_thickness0.032 INCHES NOMINAL IN
reference_number_differentiating_characteristicsAS DIFFERENTIATED BY SOURCE CONTROL NO.
NSN5310-00-252-0212
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 6560-21 · 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: SPLIT HELICAL-RIGHT HAND
•
OUTSIDE DIAMETER: 0.312 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.032 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
HOLE DIAMETER: 0.188 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
OUTSIDE DIAMETER0.312 INCHES NOMINAL IN
MATERIAL THICKNESS0.032 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING OVERALL
HOLE DIAMETER0.188 INCHES NOMINAL IN
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 6560-21?
6560-21 is a OSCILLATOR,NONCRYSTAL CONTROLLED.
What is the NSN for 6560-21?
6560-21 is cataloged in the U.S. Government catalog under NSN 5310-00-252-0212. 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.