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5266115 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5266115: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.187 INCHES MINIMUM AND 0.189 INCHES MAXIMUM IN, hole_diameter: 1.003 INCHES MINIMUM AND 1.004 INCHES MAXIMUM IN, hardness_rating: 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM, overall_diameter: 1.750 INCHES NOMINAL IN, peripheral_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-296-7828, 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
5266115
NSN: 5310-01-296-7828
FSC: 5310 — Nuts and Washers
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.187 INCHES MINIMUM AND 0.189 INCHES MAXIMUM IN
hole_diameter1.003 INCHES MINIMUM AND 1.004 INCHES MAXIMUM IN
hardness_rating58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM
overall_diameter1.750 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
inside_left_corner_chamfer_angle45.0 DEGREES NOMINAL
inside_right_corner_chamfer_angle45.0 DEGREES NOMINAL
outside_left_corner_chamfer_angle45.0 DEGREES NOMINAL
outside_right_corner_chamfer_angle45.0 DEGREES NOMINAL
NSN5310-01-296-7828
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5266115 · 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
•
OUTSIDE LEFT CORNER CHAMFER ANGLE: 45.0 DEGREES NOMINAL
•
OVERALL DIAMETER: 1.750 INCHES NOMINAL IN
•
INSIDE RIGHT CORNER CHAMFER ANGLE: 45.0 DEGREES NOMINAL
•
HARDNESS RATING: 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI-SAE01,DRILL ROD ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
INSIDE LEFT CORNER CHAMFER ANGLE: 45.0 DEGREES NOMINAL
•
OUTSIDE RIGHT CORNER CHAMFER ANGLE: 45.0 DEGREES NOMINAL
TECHNICAL CHARACTERISTICS
OUTSIDE LEFT CORNER CHAMFER ANGLE45.0 DEGREES NOMINAL
OVERALL DIAMETER1.750 INCHES NOMINAL IN
INSIDE RIGHT CORNER CHAMFER ANGLE45.0 DEGREES NOMINAL
HARDNESS RATING58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAISI-SAE01,DRILL ROD ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
INSIDE LEFT CORNER CHAMFER ANGLE45.0 DEGREES NOMINAL
OUTSIDE RIGHT CORNER CHAMFER ANGLE45.0 DEGREES NOMINAL
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL 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 5266115?
5266115 is a WASHER,FLAT.
What is the NSN for 5266115?
5266115 is cataloged in the U.S. Government catalog under NSN 5310-01-296-7828. 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.