PartsTable
Technical Data Sheet

440NKS-/.040/ — NUT,PLAIN,CLINCH

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

440NKS-/.040/: NUT,PLAIN,CLINCH.

The NUT,PLAIN,CLINCH is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: CLINCH, nut_height: 0.100 INCHES NOMINAL IN, nut_diameter: 0.250 INCHES NOMINAL IN, pilot_length: 0.030 INCHES NOMINAL IN, thread_class: 2B. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-049-2202, 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
440NKS-/.040/
NSN: 5310-01-049-2202
FSC: 5310 — Nuts and Washers
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleCLINCH
nut_height0.100 INCHES NOMINAL IN
nut_diameter0.250 INCHES NOMINAL IN
pilot_length0.030 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
pilot_diameter0.164 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
nominal_thread_size0.112 INCHES IN
thread_quantity_per_inch40
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
NSN5310-01-049-2202
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 440NKS-/.040/ · 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: UNIFIED NATIONAL COARSE (UNC)
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.112 INCHES IN
•
NUT DIAMETER: 0.250 INCHES NOMINAL IN
•
PILOT DIAMETER: 0.164 INCHES MAXIMUM IN
•
PILOT LENGTH: 0.030 INCHES NOMINAL IN
•
NUT HEIGHT: 0.100 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.112 INCHES IN
NUT DIAMETER0.250 INCHES NOMINAL IN
PILOT DIAMETER0.164 INCHES MAXIMUM IN
PILOT LENGTH0.030 INCHES NOMINAL IN
NUT HEIGHT0.100 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
NUT STYLECLINCH
THREAD CLASS2B
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

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
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FREQUENTLY ASKED QUESTIONS
What is 440NKS-/.040/?
440NKS-/.040/ is a NUT,PLAIN,CLINCH.
What is the NSN for 440NKS-/.040/?
440NKS-/.040/ is cataloged in the U.S. Government catalog under NSN 5310-01-049-2202. 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.