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Technical Data Sheet
303775 ✓ 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 OVERALL, thickness: 0.074 INCHES MINIMUM AND 0.121 INCHES MAXIMUM IN, hole_diameter: 0.526 INCHES MINIMUM AND 0.546 INCHES MAXIMUM IN, overall_diameter: 1.055 INCHES MINIMUM AND 1.092 INCHES MAXIMUM IN, surface_treatment: CADMIUM AND CHROMATE OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-123-2607, 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
303775
NSN: 5310-00-123-2607
FSC: 5310
CAGE: U1621 — SIMPSON-LAWRENCE LTD JOHNSON AND EVI RUDE OUTBOARD MOTORS (GBR)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.074 INCHES MINIMUM AND 0.121 INCHES MAXIMUM IN
hole_diameter0.526 INCHES MINIMUM AND 0.546 INCHES MAXIMUM IN
overall_diameter1.055 INCHES MINIMUM AND 1.092 INCHES MAXIMUM IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
nondefinitive_spec/std_dataA TYPE AND 1 GRADE AND A CLASS
departure_from_cited_documentAS MODIFIED BY THE FINISH
material_document_and_classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-123-2607
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 303775 · 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: 0.750 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL: STEEL COMP 302 OVERALL
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
HOLE DIAMETER: 0.450 INCHES MINIMUM AND 0.456 INCHES MAXIMUM IN
THICKNESS: 0.017 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN
PERIPHERAL SHAPE STYLE: ROUND
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL DIAMETER0.750 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 302 OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
HOLE DIAMETER0.450 INCHES MINIMUM AND 0.456 INCHES MAXIMUM IN
THICKNESS0.017 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN
PERIPHERAL SHAPE STYLEROUND
CENTER HOLE SHAPE STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
904233Interchangeable
interchangeable cross-reference
interchangeable
PL-H691D001 REV B IT NO 23Interchangeable
interchangeable cross-reference
interchangeable
MS15795-18Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 303775?
303775 is a WASHER,FLAT.
What parts can replace 303775?
There are 3 known substitutes for 303775: 904233, PL-H691D001 REV B IT NO 23, MS15795-18. Substitute compatibility should be verified for your specific system.
Is 303775 still available?
303775 is currently cancelled.
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