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13D0021-051 — WASHER,SPRING TENSION

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

13D0021-051: WASHER,SPRING TENSION.

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 304 OVERALL, hole_diameter: 0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN, outside_diameter: 0.420 INCHES NOMINAL IN, style_designator: SPRING TENSION, surface_treatment: PASSIVATE OVERALL, material_thickness: 0.020 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-503-3805, 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
13D0021-051
NSN: 5310-01-503-3805
FSC: 5310 — Nuts and Washers
CAGE: 64106 — AM MACHINING, INC. DBA AM MACHINING INC DIV APV MANUFACTURING & ENGINEERING CO. (USA)
SPECIFICATIONS
materialSTEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 304 OVERALL
hole_diameter0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
outside_diameter0.420 INCHES NOMINAL IN
style_designatorSPRING TENSION
surface_treatmentPASSIVATE OVERALL
material_thickness0.020 INCHES NOMINAL IN
end_item_identificationC-17A SUPPORT EQUIPMENT A
surface_treatment_document_and_classificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-503-3805
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 13D0021-051 · 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 TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
STYLE DESIGNATOR: SPRING TENSION
•
OUTSIDE DIAMETER: 0.420 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.020 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 304 OVERALL
•
HOLE DIAMETER: 0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATORSPRING TENSION
OUTSIDE DIAMETER0.420 INCHES NOMINAL IN
MATERIAL THICKNESS0.020 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
END ITEM IDENTIFICATIONC-17A SUPPORT EQUIPMENT A
MATERIALSTEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 304 OVERALL
HOLE DIAMETER0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
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 13D0021-051?
13D0021-051 is a WASHER,SPRING TENSION.
What is the NSN for 13D0021-051?
13D0021-051 is cataloged in the U.S. Government catalog under NSN 5310-01-503-3805. 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.