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Technical Data Sheet
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2 0040-157 — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

2 0040-157: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include nut_style: HEXAGON, nut_height: 12.0 MILLIMETERS NOMINAL MM, width_across_flats: 19.0 MILLIMETERS NOMINAL MM, bearing_surface_type: FLAT, end_item_identification: 1005-01-086-1400 GUN25MM M242. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-115-0755, 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
2 0040-157
NSN: 5310-01-115-0755
FSC: 5310 — Nuts and Washers
CAGE: S3465 — BAE SYSTEMS HAGGLUNDS AB (SWE)
SPECIFICATIONS
nut_styleHEXAGON
nut_height12.0 MILLIMETERS NOMINAL MM
width_across_flats19.0 MILLIMETERS NOMINAL MM
bearing_surface_typeFLAT
end_item_identification1005-01-086-1400 GUN25MM M242
NSN5310-01-115-0755
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2 0040-157 · 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: 19.0 MILLIMETERS NOMINAL MM
•
NUT HEIGHT: 12.0 MILLIMETERS NOMINAL MM
•
NUT STYLE: HEXAGON
•
BEARING SURFACE TYPE: FLAT
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS19.0 MILLIMETERS NOMINAL MM
NUT HEIGHT12.0 MILLIMETERS NOMINAL MM
NUT STYLEHEXAGON
END ITEM IDENTIFICATION1005-01-086-1400 GUN25MM M242
BEARING SURFACE TYPEFLAT
SUBSTITUTES & CROSS-REFERENCES 2
5310PL2035774Reference document
Same NSN cross-reference
Reference document — Informative reference only
12524617-3Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2 0040-157?
2 0040-157 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 2 0040-157?
There are 2 known substitutes for 2 0040-157: 5310PL2035774, 12524617-3. Substitute compatibility should be verified for your specific system.
What is the NSN for 2 0040-157?
2 0040-157 is cataloged in the U.S. Government catalog under NSN 5310-01-115-0755. 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.