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2190-0047 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

2190-0047: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.146 INCHES NOMINAL IN, outside_diameter: 0.275 INCHES NOMINAL IN, style_designator: COUNTERSINK EXTERNAL TEETH, countersink_angle: 90.0 DEGREES NOMINAL, surface_treatment: CHROMIUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-401-6938, 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
2190-0047
NSN: 5310-00-401-6938
FSC: 5310 — Nuts and Washers
CAGE: 7ZXR5 — KEYSIGHT TECHNOLOGIES INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.146 INCHES NOMINAL IN
outside_diameter0.275 INCHES NOMINAL IN
style_designatorCOUNTERSINK EXTERNAL TEETH
countersink_angle90.0 DEGREES NOMINAL
surface_treatmentCHROMIUM OVERALL
material_thickness0.020 INCHES NOMINAL IN
NSN5310-00-401-6938
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2190-0047 · 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
•
STYLE DESIGNATOR: COUNTERSINK EXTERNAL TEETH
•
OUTSIDE DIAMETER: 0.275 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.020 INCHES NOMINAL IN
•
SURFACE TREATMENT: CHROMIUM OVERALL
•
COUNTERSINK ANGLE: 90.0 DEGREES NOMINAL
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 0.146 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORCOUNTERSINK EXTERNAL TEETH
OUTSIDE DIAMETER0.275 INCHES NOMINAL IN
MATERIAL THICKNESS0.020 INCHES NOMINAL IN
SURFACE TREATMENTCHROMIUM OVERALL
COUNTERSINK ANGLE90.0 DEGREES NOMINAL
MATERIALSTEEL OVERALL
HOLE DIAMETER0.146 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
1506-00Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 2190-0047?
2190-0047 is a WASHER,LOCK.
What parts can replace 2190-0047?
There is 1 known substitute for 2190-0047: 1506-00. Substitute compatibility should be verified for your specific system.
What is the NSN for 2190-0047?
2190-0047 is cataloged in the U.S. Government catalog under NSN 5310-00-401-6938. 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.