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UP38924 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

UP38924: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, outside_diameter: 0.688 INCHES NOMINAL IN, special_features: PREBENT KEY ON 45 DEGREE ANGLE,OBLONG HOLE 0.187 IN. W BY 0.250 IN.

L IN, style_designator: KEY, material_thickness: 0.045 INCHES NOMINAL IN, external_prebent_key_width: 0.188 INCHES NOMINAL IN. This part is cataloged in the U.S. Government catalog under NSN 5310-00-407-6243, 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
UP38924
NSN: 5310-00-407-6243
FSC: 5310 — Nuts and Washers
CAGE: 31550 — L3HARRIS TECHNOLOGIES, INC. DBA HARRIS CORPORATION (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
outside_diameter0.688 INCHES NOMINAL IN
special_featuresPREBENT KEY ON 45 DEGREE ANGLE,OBLONG HOLE 0.187 IN. W BY 0.250 IN. L IN
style_designatorKEY
material_thickness0.045 INCHES NOMINAL IN
external_prebent_key_width0.188 INCHES NOMINAL IN
external_prebent_key_length0.187 INCHES NOMINAL IN
distance_from_centerline_to_inside_of_prebent_key0.484 INCHES NOMINAL IN
NSN5310-00-407-6243
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: UP38924 · 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
•
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY: 0.484 INCHES NOMINAL IN
•
EXTERNAL PREBENT KEY LENGTH: 0.187 INCHES NOMINAL IN
•
STYLE DESIGNATOR: KEY
•
OUTSIDE DIAMETER: 0.688 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.045 INCHES NOMINAL IN
•
EXTERNAL PREBENT KEY WIDTH: 0.188 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY0.484 INCHES NOMINAL IN
EXTERNAL PREBENT KEY LENGTH0.187 INCHES NOMINAL IN
STYLE DESIGNATORKEY
OUTSIDE DIAMETER0.688 INCHES NOMINAL IN
MATERIAL THICKNESS0.045 INCHES NOMINAL IN
SPECIAL FEATURESPREBENT KEY ON 45 DEGREE ANGLE,OBLONG HOLE 0.187 IN. W BY 0.250 IN. L IN
EXTERNAL PREBENT KEY WIDTH0.188 INCHES NOMINAL IN
MATERIALCOPPER ALLOY 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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is UP38924?
UP38924 is a WASHER,KEY.
What is the NSN for UP38924?
UP38924 is cataloged in the U.S. Government catalog under NSN 5310-00-407-6243. 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.