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2057-1596 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

2057-1596: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, hole_diameter: 0.317 INCHES NOMINAL IN, outside_diameter: 0.572 INCHES NOMINAL IN, surface_treatment: PASSIVATE OVERALL, material_thickness: 0.048 INCHES NOMINAL IN, external_straight_key_width: 0.114 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-674-0551, 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
2057-1596
NSN: 5310-00-674-0551
FSC: 5310 — Nuts and Washers
CAGE: 3B150 — RAYTHEON COMPANY DBA RAYTHEON CO (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
hole_diameter0.317 INCHES NOMINAL IN
outside_diameter0.572 INCHES NOMINAL IN
surface_treatmentPASSIVATE OVERALL
material_thickness0.048 INCHES NOMINAL IN
external_key_quantity3
external_straight_key_width0.114 INCHES NOMINAL IN
overall_distance_including_keys0.718 INCHES NOMINAL IN
NSN5310-00-674-0551
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2057-1596 · 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: 0.718 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.572 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.048 INCHES NOMINAL IN
•
EXTERNAL STRAIGHT KEY WIDTH: 0.114 INCHES NOMINAL IN
•
EXTERNAL KEY QUANTITY: 3
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
HOLE DIAMETER: 0.317 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DISTANCE INCLUDING KEYS0.718 INCHES NOMINAL IN
OUTSIDE DIAMETER0.572 INCHES NOMINAL IN
MATERIAL THICKNESS0.048 INCHES NOMINAL IN
EXTERNAL STRAIGHT KEY WIDTH0.114 INCHES NOMINAL IN
EXTERNAL KEY QUANTITY3
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL CORROSION RESISTING OVERALL
HOLE DIAMETER0.317 INCHES NOMINAL 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
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2057-1596?
2057-1596 is a WASHER,KEY.
What is the NSN for 2057-1596?
2057-1596 is cataloged in the U.S. Government catalog under NSN 5310-00-674-0551. 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.