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1A3544 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

1A3544: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.531 INCHES NOMINAL IN, outside_diameter: 1.000 INCHES NOMINAL IN, style_designator: KEY, material_thickness: 0.035 INCHES NOMINAL IN, external_straight_key_width: 0.375 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-352-7289, 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
1A3544
NSN: 5310-00-352-7289
FSC: 5310 — Nuts and Washers
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.531 INCHES NOMINAL IN
outside_diameter1.000 INCHES NOMINAL IN
style_designatorKEY
material_thickness0.035 INCHES NOMINAL IN
external_straight_key_width0.375 INCHES NOMINAL IN
distance_from_centerline_to_end_of_key0.688 INCHES NOMINAL IN
NSN5310-00-352-7289
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1A3544 · 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
•
STYLE DESIGNATOR: KEY
•
OUTSIDE DIAMETER: 1.000 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.035 INCHES NOMINAL IN
•
EXTERNAL STRAIGHT KEY WIDTH: 0.375 INCHES NOMINAL IN
•
DISTANCE FROM CENTERLINE TO END OF KEY: 0.688 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 0.531 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORKEY
OUTSIDE DIAMETER1.000 INCHES NOMINAL IN
MATERIAL THICKNESS0.035 INCHES NOMINAL IN
EXTERNAL STRAIGHT KEY WIDTH0.375 INCHES NOMINAL IN
DISTANCE FROM CENTERLINE TO END OF KEY0.688 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
HOLE DIAMETER0.531 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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1A3544?
1A3544 is a WASHER,KEY.
What is the NSN for 1A3544?
1A3544 is cataloged in the U.S. Government catalog under NSN 5310-00-352-7289. 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.