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234999 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

234999: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 3.150 INCHES NOMINAL IN, overall_height: 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN, outside_diameter: 3.152 INCHES MINIMUM AND 3.157 INCHES MAXIMUM IN, style_designator: RECESSED, material_thickness: 0.030 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-205-9714, 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
234999
NSN: 5310-00-205-9714
NIINs: 002059714, 011215538
FSC: 5310 — Nuts and Washers
CAGE: 1J4P3 — PARADIGM MANCHESTER INC. DBA PURSUIT AEROSPACE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter3.150 INCHES NOMINAL IN
overall_height0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
outside_diameter3.152 INCHES MINIMUM AND 3.157 INCHES MAXIMUM IN
style_designatorRECESSED
material_thickness0.030 INCHES NOMINAL IN
material_document_and_classificationAISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-205-9714
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 234999 · 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: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL COMP 321 OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.333 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SURFACE TREATMENTPASSIVATE OVERALL
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL COMP 321 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.333 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN
THICKNESS0.015 INCHES MINIMUM AND 0.021 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 2
145928-4Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
235-3-2Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 234999?
234999 is a WASHER,FLAT.
What parts can replace 234999?
There are 2 known substitutes for 234999: 145928-4, 235-3-2. Substitute compatibility should be verified for your specific system.
What is the NSN for 234999?
234999 is cataloged in the U.S. Government catalog under NSN 5310-00-205-9714. 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.