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4030T18P01 — NUT,SELF-LOCKING,ROUND

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4030T18P01: NUT,SELF-LOCKING,ROUND.

The NUT,SELF-LOCKING,ROUND is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL EXCEPT INSERT, nut_style: ROUND, nut_diameter: 1.725 INCHES MINIMUM AND 1.745 INCHES MAXIMUM IN, thread_class: 3B, nut_thickness: 0.350 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN, thread_series: UNJEF. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-144-3926, 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
4030T18P01
NSN: 5310-01-144-3926
FSC: 5310 — Nuts and Washers
CAGE: 99207 — GENERAL ELECTRIC COMPANY DBA GE AEROSPACE (USA)
SPECIFICATIONS
materialSTEEL OVERALL EXCEPT INSERT
nut_styleROUND
nut_diameter1.725 INCHES MINIMUM AND 1.745 INCHES MAXIMUM IN
thread_class3B
nut_thickness0.350 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
thread_seriesUNJEF
hardness_rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
drive_point_depth0.090 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
surface_treatmentOXIDE OVERALL EXCEPT INSERT
nominal_thread_size1.375 INCHES IN
NSN5310-01-144-3926
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4030T18P01 · 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
•
THREAD SERIES: UNJEF
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.375 INCHES IN
•
NUT DIAMETER: 1.725 INCHES MINIMUM AND 1.745 INCHES MAXIMUM IN
•
DRIVE POINT DEPTH: 0.090 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
•
LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT
•
NUT THICKNESS: 0.350 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
THREAD SERIESUNJEF
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.375 INCHES IN
NUT DIAMETER1.725 INCHES MINIMUM AND 1.745 INCHES MAXIMUM IN
DRIVE POINT DEPTH0.090 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
NUT THICKNESS0.350 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
DRIVE POINT DIAMETER0.128 INCHES MINIMUM AND 0.142 INCHES MAXIMUM IN
SURFACE TREATMENTOXIDE OVERALL EXCEPT INSERT
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 2
VBR10714Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
10109800Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4030T18P01?
4030T18P01 is a NUT,SELF-LOCKING,ROUND.
What parts can replace 4030T18P01?
There are 2 known substitutes for 4030T18P01: VBR10714, 10109800. Substitute compatibility should be verified for your specific system.
What is the NSN for 4030T18P01?
4030T18P01 is cataloged in the U.S. Government catalog under NSN 5310-01-144-3926. 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.