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404163 — WASHER,FLAT

✓ Government record, cited
Legrand · NUT WASHER
PRODUCT OVERVIEW

404163: WASHER,FLAT.

The WASHER,FLAT is a Legrand industrial component. Key specifications include phase: SINGLE, width: 2.375 INCHES NOMINAL IN, height: 2.375 INCHES NOMINAL IN, length: 6.500 INCHES NOMINAL IN, current_type: AC, pointer_type: INDICATING SINGLE POINTER. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-155-4309, 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
404163
NSN: 5310-01-155-4309
NIINs: 011554309, 014459580
FSC: 5310 — Nuts and Washers
CAGE: 72031 — DUTTON-LAINSON COMPANY (USA)
SPECIFICATIONS
phaseSINGLE
width2.375 INCHES NOMINAL IN
height2.375 INCHES NOMINAL IN
length6.500 INCHES NOMINAL IN
current_typeAC
pointer_typeINDICATING SINGLE POINTER
usage_designVERTICAL SPEED
scale_markingLETTERS AND MAJOR GRADUATION AND MINOR GRADUATION AND NUMERALS
pointer_finishNONLUMINOUS SINGLE POINTER
pointer_purposeVERTICAL VELOCITY
contact_quantity37
frequency_rating400.0 HERTZ NOMINAL
NSN5310-01-155-4309
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 404163 · Legrand ⚠ 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: 1.307 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
SURFACE TREATMENT: CHROMATE OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL COMP 1008 OR STEEL COMP 1010 OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.628 INCHES MINIMUM AND 0.632 INCHES MAXIMUM IN
•
THICKNESS: 0.179 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER1.307 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SURFACE TREATMENTCHROMATE OVERALL
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL COMP 1008 OR STEEL COMP 1010 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.628 INCHES MINIMUM AND 0.632 INCHES MAXIMUM IN
THICKNESS0.179 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
2AA621Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 404163?
404163 is a WASHER,FLAT manufactured by Legrand.
What parts can replace 404163?
There is 1 known substitute for 404163: 2AA621. Substitute compatibility should be verified for your specific system.
What is the NSN for 404163?
404163 is cataloged in the U.S. Government catalog under NSN 5310-01-155-4309. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.