PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 204-011-311-001
204-011-311-001 ✓ 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: STEEL COMP 416 OVERALL, thickness: 0.200 INCHES NOMINAL IN, hole_diameter: 0.260 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN, overall_diameter: 1.230 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN, surface_treatment: PASSIVATE OVERALL, peripheral_shape_style: ROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-893-4392, 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
204-011-311-001
NSN: 5310-00-893-4392
FSC: 5310
CAGE: 97499 — BELL TEXTRON INC (USA)
SPECIFICATIONS
materialSTEEL COMP 416 OVERALL
thickness0.200 INCHES NOMINAL IN
hole_diameter0.260 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
overall_diameter1.230 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN
surface_treatmentPASSIVATE OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-893-4392
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 204-011-311-001 · 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
•
MATERIAL: STEEL COMP 416 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
THICKNESS: 0.200 INCHES NOMINAL IN
•
PERIPHERAL SHAPE STYLE: ROUND
•
OVERALL DIAMETER: 1.230 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.260 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 416 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
THICKNESS0.200 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER1.230 INCHES MINIMUM AND 1.240 INCHES MAXIMUM IN
HOLE DIAMETER0.260 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
CENTER HOLE SHAPE STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
2951Interchangeable
interchangeable cross-reference
interchangeable
711498-36Interchangeable
interchangeable cross-reference
interchangeable
442-0043-004Interchangeable
interchangeable cross-reference
interchangeable
174-136Interchangeable
interchangeable cross-reference
interchangeable
MC2951Interchangeable
interchangeable cross-reference
interchangeable
F57826Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 204-011-311-001?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 204-011-311-001?
204-011-311-001 is a WASHER,FLAT.
What parts can replace 204-011-311-001?
There are 20 known substitutes for 204-011-311-001: 2951, 711498-36, 442-0043-004 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 204-011-311-001?
204-011-311-001 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-893-4392. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 204-011-311-001

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026