PartsTable
Technical Data Sheet
Download PDF

11241789 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

11241789: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.320 INCHES MINIMUM AND 0.415 INCHES MAXIMUM IN, thread_class: 2A A, thread_series: UNIFIED NATIONAL COARSE (UNC), locking_feature: TOP LOCK. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-722-1626, 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
11241789
NSN: 5310-01-722-1626
NIINs: 017221626, 017232558
FSC: 5310 — Nuts and Washers
CAGE: 3J0G7 — FASTENAL COMPANY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.320 INCHES MINIMUM AND 0.415 INCHES MAXIMUM IN
thread_class2A A
thread_seriesUNIFIED NATIONAL COARSE (UNC)
locking_featureTOP LOCK
special_featuresWEIGHT 0.0147
thread_directionRIGHT-HAND
washer_thickness0.415 INCHES NOMINAL IN
width_across_flats0.5510 INCHES MINIMUM AND 0.5645 INCHES MAXIMUM IN
nominal_thread_size16.0 INCHES IN
bearing_surface_typeCHAMFERED
NSN5310-01-722-1626
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 11241789 · 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: 0.5510 INCHES MINIMUM AND 0.5645 INCHES MAXIMUM IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
LOCKING FEATURE: TOP LOCK
•
NUT HEIGHT: 0.320 INCHES MINIMUM AND 0.415 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.5510 INCHES MINIMUM AND 0.5645 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.375 INCHES IN
LOCKING FEATURETOP LOCK
NUT HEIGHT0.320 INCHES MINIMUM AND 0.415 INCHES MAXIMUM IN
SPECIAL FEATURESFASTENAL ECOGUARD FINISH OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYTOP LOCK NUT
NUT STYLEHEXAGON
THREAD CLASS2A A
SUBSTITUTES & CROSS-REFERENCES 1
TPLK.GRC.ECO.05Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy 11241789?
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 11241789?
11241789 is a NUT,SELF-LOCKING,EXTENDED WASHER.
What parts can replace 11241789?
There is 1 known substitute for 11241789: TPLK.GRC.ECO.05. Substitute compatibility should be verified for your specific system.
What is the NSN for 11241789?
11241789 is cataloged in the U.S. Government catalog under NSN 5310-01-722-1626. 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 — 11241789

✓ 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.