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Technical Data Sheet
PartsTable / COMPONENT / 1250-0146
1250-0146 ✓ 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: COPPER ALLOY OVERALL, thickness: 0.031 INCHES NOMINAL IN, hole_diameter: 0.218 INCHES NOMINAL IN, overall_diameter: 0.390 INCHES NOMINAL IN, surface_treatment: SILVER 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 5310-00-937-0650, 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
1250-0146
NSN: 5310-00-937-0650
FSC: 5310
CAGE: 28480 — HEWLETT-PACKARD COMPANY DBA HP (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
thickness0.031 INCHES NOMINAL IN
hole_diameter0.218 INCHES NOMINAL IN
overall_diameter0.390 INCHES NOMINAL IN
surface_treatmentSILVER OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-937-0650
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1250-0146 · 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: 0.390 INCHES NOMINAL IN
•
CENTER HOLE SHAPE STYLE: ROUND
•
MATERIAL: COPPER ALLOY OVERALL
•
SURFACE TREATMENT: SILVER OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.218 INCHES NOMINAL IN
•
THICKNESS: 0.031 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL DIAMETER0.390 INCHES NOMINAL IN
CENTER HOLE SHAPE STYLEROUND
MATERIALCOPPER ALLOY OVERALL
SURFACE TREATMENTSILVER OVERALL
PERIPHERAL SHAPE STYLEROUND
HOLE DIAMETER0.218 INCHES NOMINAL IN
THICKNESS0.031 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
5511-0562Interchangeable
interchangeable cross-reference
interchangeable
4536-9/16Interchangeable
interchangeable cross-reference
interchangeable
4005-0562Interchangeable
interchangeable cross-reference
interchangeable
20536Interchangeable
interchangeable cross-reference
interchangeable
500108Interchangeable
interchangeable cross-reference
interchangeable
4T2187Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1250-0146?
1250-0146 is a WASHER,FLAT.
What parts can replace 1250-0146?
There are 6 known substitutes for 1250-0146: 5511-0562, 4536-9/16, 4005-0562 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1250-0146?
1250-0146 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-937-0650. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026