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PartsTable / COMPONENT / 1650407-37
1650407-37 ✓ 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 303 OVERALL, thickness: 0.014 INCHES MINIMUM AND 0.018 INCHES MAXIMUM IN, hole_diameter: 0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, overall_diameter: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN, surface_treatment: PASSIVATE OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-802-0686, 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
1650407-37
NSN: 5310-00-802-0686
FSC: 5310
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
thickness0.014 INCHES MINIMUM AND 0.018 INCHES MAXIMUM IN
hole_diameter0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
overall_diameter0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
surface_treatmentPASSIVATE OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-802-0686
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1650407-37 · 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
•
OVERALL DIAMETER: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 303 OVERALL
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
THICKNESS: 0.014 INCHES MINIMUM AND 0.018 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE SHAPE STYLEROUND
OVERALL DIAMETER0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
MATERIALSTEEL COMP 303 OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
THICKNESS0.014 INCHES MINIMUM AND 0.018 INCHES MAXIMUM IN
HOLE DIAMETER0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
B87XInterchangeable
interchangeable cross-reference
interchangeable
BRG6Interchangeable
interchangeable cross-reference
interchangeable
6711343Interchangeable
interchangeable cross-reference
interchangeable
B87Interchangeable
interchangeable cross-reference
interchangeable
5940PL1292744Interchangeable
interchangeable cross-reference
interchangeable
10015524-012Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1650407-37?
1650407-37 is a WASHER,FLAT.
What parts can replace 1650407-37?
There are 8 known substitutes for 1650407-37: B87X, BRG6, 6711343 and 5 more. Substitute compatibility should be verified for your specific system.
Is 1650407-37 still available?
1650407-37 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026