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Technical Data Sheet
189025 ✓ 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 303SE OVERALL, thickness: 0.030 INCHES NOMINAL IN, hole_diameter: 0.136 INCHES NOMINAL IN, overall_diameter: 0.250 INCHES NOMINAL IN, surface_treatment: PASSIVATE OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-084-2512, 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
189025
NSN: 5310-01-084-2512
FSC: 5310
CAGE: 31441 — AMERICAN SAFETY FLIGHT SYSTEMS INC (USA)
SPECIFICATIONS
materialSTEEL COMP 303SE OVERALL
thickness0.030 INCHES NOMINAL IN
hole_diameter0.136 INCHES NOMINAL IN
overall_diameter0.250 INCHES NOMINAL IN
surface_treatmentPASSIVATE OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationASTM A582,COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-084-2512
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 189025 · 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
CENTER HOLE SHAPE STYLE: ROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT: PASSIVATE OVERALL
PERIPHERAL SHAPE STYLE: ROUND
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582,COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL: STEEL COMP 303SE OVERALL
THICKNESS: 0.030 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE SHAPE STYLEROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
PERIPHERAL SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582,COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 303SE OVERALL
THICKNESS0.030 INCHES NOMINAL IN
OVERALL DIAMETER0.250 INCHES NOMINAL IN
HOLE DIAMETER0.136 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
342SInterchangeable
interchangeable cross-reference
interchangeable
148346Interchangeable
interchangeable cross-reference
interchangeable
71071Interchangeable
interchangeable cross-reference
interchangeable
A22029Interchangeable
interchangeable cross-reference
interchangeable
PP-7821/FSS-12(V)Interchangeable
interchangeable cross-reference
interchangeable
553-00071-99Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 189025?
189025 is a WASHER,FLAT.
What parts can replace 189025?
There are 9 known substitutes for 189025: 342S, 148346, 71071 and 6 more. Substitute compatibility should be verified for your specific system.
Is 189025 still available?
189025 is currently cancelled.
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