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D27539 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 938 OVERALL, thickness: 0.245 INCHES MINIMUM AND 0.246 INCHES MAXIMUM IN, hole_diameter: 1.391 INCHES NOMINAL IN, overall_diameter: 2.625 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-270-2168, 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
D27539
NSN: 5310-00-270-2168
FSC: 5310
CAGE: 23926 — KOMATSU AMERICA CORPORATION (USA)
SPECIFICATIONS
materialCOPPER ALLOY 938 OVERALL
thickness0.245 INCHES MINIMUM AND 0.246 INCHES MAXIMUM IN
hole_diameter1.391 INCHES NOMINAL IN
overall_diameter2.625 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-270-2168
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: D27539 · 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
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: COPPER ALLOY 938 OVERALL
•
THICKNESS: 0.245 INCHES MINIMUM AND 0.246 INCHES MAXIMUM IN
•
OVERALL DIAMETER: 2.625 INCHES NOMINAL IN
•
HOLE DIAMETER: 1.391 INCHES NOMINAL IN
•
CENTER HOLE SHAPE STYLE: ROUND
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
PERIPHERAL SHAPE STYLEROUND
MATERIALCOPPER ALLOY 938 OVERALL
THICKNESS0.245 INCHES MINIMUM AND 0.246 INCHES MAXIMUM IN
OVERALL DIAMETER2.625 INCHES NOMINAL IN
HOLE DIAMETER1.391 INCHES NOMINAL IN
CENTER HOLE SHAPE STYLEROUND
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
850693Interchangeable
interchangeable cross-reference
interchangeable
27-539Interchangeable
interchangeable cross-reference
interchangeable
X5008/12/149/8Interchangeable
interchangeable cross-reference
interchangeable
149 ITEM 8Interchangeable
interchangeable cross-reference
interchangeable
149/8Interchangeable
interchangeable cross-reference
interchangeable
29927Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D27539?
D27539 is a WASHER,FLAT.
What parts can replace D27539?
There are 6 known substitutes for D27539: 850693, 27-539, X5008/12/149/8 and 3 more. Substitute compatibility should be verified for your specific system.
Is D27539 still available?
D27539 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026