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PartsTable / COMPONENT / 900331-2
900331-2 ✓ 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 SWITCH,INERTIAL NAV is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.032 INCHES NOMINAL IN, hole_diameter: 0.130 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN, overall_diameter: 0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, surface_treatment: ZINC OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-575-3467, 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
900331-2
NSN: 5310-00-575-3467
FSC: 5310
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.032 INCHES NOMINAL IN
hole_diameter0.130 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
overall_diameter0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
surface_treatmentZINC OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-575-3467
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 900331-2 · 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
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OVERALL DIAMETER: 0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
SURFACE TREATMENT: ZINC OVERALL
•
HOLE DIAMETER: 0.130 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
•
PERIPHERAL SHAPE STYLE: ROUND
•
THICKNESS: 0.032 INCHES NOMINAL IN
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OVERALL DIAMETER0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
SURFACE TREATMENTZINC OVERALL
HOLE DIAMETER0.130 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.032 INCHES NOMINAL IN
CENTER HOLE SHAPE STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
263680Interchangeable
interchangeable cross-reference
interchangeable
16-634-3Interchangeable
interchangeable cross-reference
interchangeable
16-634Interchangeable
interchangeable cross-reference
interchangeable
900331-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 900331-2?
900331-2 is a SWITCH,INERTIAL NAV.
What parts can replace 900331-2?
There are 4 known substitutes for 900331-2: 263680, 16-634-3, 16-634 and 1 more. Substitute compatibility should be verified for your specific system.
Is 900331-2 still available?
900331-2 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