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Technical Data Sheet
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657-214 — 657-214

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

657-214: 657-214.

The 657-214 is a the manufacturer industrial component. Key specifications include special_features: PACKAGED ONE PER BOX, style_designator: TWO PIECE, tongue_hole_type: ROUND, THREADED, material_thickness: 0.312 INCHES NOMINAL IN, loop_inside_diameter: 2.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-447-3425, 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
657-214
NSN: 5310-00-447-3425
NIINs: 004473425, 013888804
FSC: 5310 — Nuts and Washers
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
special_featuresPACKAGED ONE PER BOX
style_designatorTWO PIECE
tongue_hole_typeROUND, THREADED
material_thickness0.312 INCHES NOMINAL IN
loop_inside_diameter2.250 INCHES NOMINAL IN
NSN5310-00-447-3425
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 657-214 · 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
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 657-214?
657-214 is a 657-214.
What is the NSN for 657-214?
657-214 is cataloged in the U.S. Government catalog under NSN 5310-00-447-3425. 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.