PartsTable
Technical Data Sheet
Download PDF

5530K19 — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5530K19: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.3125 INCHES NOMINAL IN, thread_series: NPT, locking_feature: FREE-RUNNING ALL METAL DESIGN, special_features: HAS PTFE SEAL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-626-4028, 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
5530K19
NSN: 5310-01-626-4028
FSC: 5310 — Nuts and Washers
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.3125 INCHES NOMINAL IN
thread_seriesNPT
locking_featureFREE-RUNNING ALL METAL DESIGN
special_featuresHAS PTFE SEAL
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
width_across_flats1.125 INCHES NOMINAL IN
nominal_thread_size0.50 INCHES IN
bearing_surface_typeWASHER FACED
end_item_identification4940-01-601-1928
NSN5310-01-626-4028
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5530K19 · 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
•
WIDTH ACROSS FLATS: 1.125 INCHES NOMINAL IN
•
THREAD SERIES: NPT
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.50 INCHES IN
•
LOCKING FEATURE: FREE-RUNNING ALL METAL DESIGN
•
NUT HEIGHT: 0.3125 INCHES NOMINAL IN
•
SURFACE TREATMENT: ZINC OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.125 INCHES NOMINAL IN
THREAD SERIESNPT
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.50 INCHES IN
LOCKING FEATUREFREE-RUNNING ALL METAL DESIGN
NUT HEIGHT0.3125 INCHES NOMINAL IN
SPECIAL FEATURESHAS PTFE SEAL
SURFACE TREATMENTZINC OVERALL
NUT STYLEHEXAGON
END ITEM IDENTIFICATION4940-01-601-1928
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 5530K19?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 5530K19?
5530K19 is a NUT,SELF-LOCKING,HEXAGON.
What is the NSN for 5530K19?
5530K19 is cataloged in the U.S. Government catalog under NSN 5310-01-626-4028. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 5530K19

✓ 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.