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310498 — WASHER,FLAT

✓ Government record, cited
Legrand · NUT WASHER
PRODUCT OVERVIEW

310498: WASHER,FLAT.

The WASHER,FLAT is a Legrand industrial component. Key specifications include material: STEEL SHANK, grip_length: 1.250 INCHES NOMINAL IN, actuation_type: PUSH, shank_diameter: 0.4970 INCHES MINIMUM AND 0.4985 INCHES MAXIMUM IN, style_designator: BUTTON, button_handle_diameter: 1.37 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-176-6419, 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
310498
NSN: 5310-00-176-6419
NIINs: 001766419, 005296418, 016164120
FSC: 5310 — Nuts and Washers
CAGE: 1UVT5 — BRP US INC (USA)
SPECIFICATIONS
materialSTEEL SHANK
grip_length1.250 INCHES NOMINAL IN
actuation_typePUSH
shank_diameter0.4970 INCHES MINIMUM AND 0.4985 INCHES MAXIMUM IN
detent_quantity1
style_designatorBUTTON
button_handle_diameter1.37 INCHES NOMINAL IN
end_item_identification2320-01-534-1887
shoulder_to_head_end_distance0.720 INCHES NOMINAL IN
detent_to_tapered_end_distance0.460 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencyPIN, QRL .50X1.35 SS
NSN5310-00-176-6419
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 310498 · 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
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 310498?
310498 is a WASHER,FLAT manufactured by Legrand.
What is the NSN for 310498?
310498 is cataloged in the U.S. Government catalog under NSN 5310-00-176-6419. 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.