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34-02-21 — 34-02-21

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

34-02-21: 34-02-21.

The 34-02-21 is a the manufacturer industrial component. Key specifications include aperture_diameter: 4.370 INCHES NOMINAL IN, cross-sectional_thickness: 0.063 INCHES NOMINAL IN, center_to_center_distance_between_bolt_holes_along_width: 5.600 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, center_to_center_distance_between_bolt_holes_along_length: 16.850 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-352-6152, 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
34-02-21
NSN: 5315-00-352-6152
NIINs: 003526152, 011208089
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 09348 — LUCAS WESTERN INC (USA)
SPECIFICATIONS
aperture_diameter4.370 INCHES NOMINAL IN
cross-sectional_thickness0.063 INCHES NOMINAL IN
center_to_center_distance_between_bolt_holes_along_width5.600 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
center_to_center_distance_between_bolt_holes_along_length16.850 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
NSN5315-00-352-6152
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 34-02-21 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL,2.250 IN. DIA,8.875 IN. LG IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL,2.250 IN. DIA,8.875 IN. LG IN
SUBSTITUTES & CROSS-REFERENCES 1
ERSC21Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 34-02-21?
34-02-21 is a 34-02-21.
What parts can replace 34-02-21?
There is 1 known substitute for 34-02-21: ERSC21. Substitute compatibility should be verified for your specific system.
What is the NSN for 34-02-21?
34-02-21 is cataloged in the U.S. Government catalog under NSN 5315-00-352-6152. 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.