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634231 — WASHER,KEYWAY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

634231: WASHER,KEYWAY.

The WASHER,KEYWAY is a the manufacturer industrial component. Key specifications include hole_diameter: 1.505 INCHES MINIMUM AND 1.506 INCHES MAXIMUM IN, outside_diameter: 2.469 INCHES NOMINAL IN, material_thickness: 0.166 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN, external_keyway_width: 0.250 INCHES NOMINAL IN, external_keyway_length: 0.250 INCHES NOMINAL IN, material_document_and_classification: MIL-C-15345 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-977-2786, 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
634231
NSN: 5310-00-977-2786
FSC: 5310 — Nuts and Washers
CAGE: 0UBG9 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DIV EPD (USA)
SPECIFICATIONS
hole_diameter1.505 INCHES MINIMUM AND 1.506 INCHES MAXIMUM IN
outside_diameter2.469 INCHES NOMINAL IN
material_thickness0.166 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN
external_keyway_width0.250 INCHES NOMINAL IN
external_keyway_length0.250 INCHES NOMINAL IN
material_document_and_classificationMIL-C-15345 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-977-2786
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 634231 · 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
•
EXTERNAL KEYWAY WIDTH: 0.250 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-C-15345 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 2.469 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.166 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN
•
HOLE DIAMETER: 1.505 INCHES MINIMUM AND 1.506 INCHES MAXIMUM IN
•
EXTERNAL KEYWAY LENGTH: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
EXTERNAL KEYWAY WIDTH0.250 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-C-15345 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER2.469 INCHES NOMINAL IN
MATERIAL THICKNESS0.166 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN
HOLE DIAMETER1.505 INCHES MINIMUM AND 1.506 INCHES MAXIMUM IN
EXTERNAL KEYWAY LENGTH0.250 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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 634231?
634231 is a WASHER,KEYWAY.
What is the NSN for 634231?
634231 is cataloged in the U.S. Government catalog under NSN 5310-00-977-2786. 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.