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41A3311 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

41A3311: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: RUBBER SILICONE CLASS Q OVERALL, thickness: 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN, hole_diameter: 0.226 INCHES MINIMUM AND 0.242 INCHES MAXIMUM IN, overall_diameter: 0.382 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-251-7574, 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
41A3311
NSN: 5310-01-251-7574
FSC: 5310 — Nuts and Washers
CAGE: 53655 — AVOX SYSTEMS INC DBA AVOX SYSTEMS INC (USA)
SPECIFICATIONS
materialRUBBER SILICONE CLASS Q OVERALL
thickness0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
hole_diameter0.226 INCHES MINIMUM AND 0.242 INCHES MAXIMUM IN
overall_diameter0.382 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationZZ-R-765 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-251-7574
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 41A3311 · 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
•
OVERALL DIAMETER: 0.382 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ZZ-R-765 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: RUBBER SILICONE CLASS Q OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.226 INCHES MINIMUM AND 0.242 INCHES MAXIMUM IN
•
THICKNESS: 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.382 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONZZ-R-765 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
MATERIALRUBBER SILICONE CLASS Q OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.226 INCHES MINIMUM AND 0.242 INCHES MAXIMUM IN
THICKNESS0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 1
56976-00Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 41A3311?
41A3311 is a WASHER,FLAT.
What parts can replace 41A3311?
There is 1 known substitute for 41A3311: 56976-00. Substitute compatibility should be verified for your specific system.
What is the NSN for 41A3311?
41A3311 is cataloged in the U.S. Government catalog under NSN 5310-01-251-7574. 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.