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CAT210-4R — WASHER,KEYWAY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

CAT210-4R: WASHER,KEYWAY.

The WASHER,KEYWAY is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, hole_diameter: 0.311 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN, outside_diameter: 0.387 INCHES MINIMUM AND 0.393 INCHES MAXIMUM IN, special_features: "R" ON THE PART NUMBER MEANS RETAINING RING, style_designator: KEY, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-532-1507, 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
CAT210-4R
NSN: 5310-01-532-1507
FSC: 5310 — Nuts and Washers
CAGE: 29372 — HOWMET GLOBAL FASTENING SYSTEMS INC. DIV TRIDAIR PRODUCTS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
hole_diameter0.311 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN
outside_diameter0.387 INCHES MINIMUM AND 0.393 INCHES MAXIMUM IN
special_features"R" ON THE PART NUMBER MEANS RETAINING RING
style_designatorKEY
surface_treatmentPASSIVATE OVERALL
material_thickness0.028 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN
external_key_quantity2
internal_key_quantity2
external_straight_key_width0.046 INCHES NOMINAL IN
internal_straight_key_width0.046 INCHES NOMINAL IN
overall_distance_including_keys0.435 INCHES NOMINAL IN
NSN5310-01-532-1507
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: CAT210-4R · 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
•
INTERNAL STRAIGHT KEY WIDTH: 0.046 INCHES NOMINAL IN
•
OVERALL DISTANCE INCLUDING KEYS: 0.435 INCHES NOMINAL IN
•
STYLE DESIGNATOR: KEY
•
OUTSIDE DIAMETER: 0.387 INCHES MINIMUM AND 0.393 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.028 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN
•
EXTERNAL STRAIGHT KEY WIDTH: 0.046 INCHES NOMINAL IN
•
EXTERNAL KEY QUANTITY: 2
TECHNICAL CHARACTERISTICS
INTERNAL STRAIGHT KEY WIDTH0.046 INCHES NOMINAL IN
OVERALL DISTANCE INCLUDING KEYS0.435 INCHES NOMINAL IN
STYLE DESIGNATORKEY
OUTSIDE DIAMETER0.387 INCHES MINIMUM AND 0.393 INCHES MAXIMUM IN
MATERIAL THICKNESS0.028 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN
EXTERNAL STRAIGHT KEY WIDTH0.046 INCHES NOMINAL IN
EXTERNAL KEY QUANTITY2
SPECIAL FEATURES"R" ON THE PART NUMBER MEANS RETAINING RING
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL CORROSION RESISTING OVERALL
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is CAT210-4R?
CAT210-4R is a WASHER,KEYWAY.
What is the NSN for CAT210-4R?
CAT210-4R is cataloged in the U.S. Government catalog under NSN 5310-01-532-1507. 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.