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Technical Data Sheet
PartsTable / COMPONENT / 20158-40
20158-40 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: HEXAGON, nut_height: 0.175 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UN, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-469-7225, 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
20158-40
NSN: 5310-01-469-7225
FSC: 5310
CAGE: 01343 — ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleHEXAGON
nut_height0.175 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
thread_class2B
thread_seriesUN
thread_directionRIGHT-HAND
width_across_flats1.212 INCHES MINIMUM AND 1.255 INCHES MAXIMUM IN
nominal_thread_size0.875 INCHES IN
bearing_surface_typeCHAMFERED OR WASHER FACED
thread_pitch_diameters+0.8344 TO 0.8407 INCHES IN
end_item_identificationUSED ON NIMITZ CLASS CVN
thread_quantity_per_inch16
NSN5310-01-469-7225
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 20158-40 · 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 CLASS: 2B
•
THREAD PITCH DIAMETERS: +0.8344 TO 0.8407 INCHES IN
•
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
•
NOMINAL THREAD SIZE: 0.875 INCHES IN
•
THREAD QUANTITY PER INCH: 16
•
THREAD SERIES: UN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM-A582-TY416 ASSN STD ALL MATERIAL RESPONSES OVERALL
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2B
THREAD PITCH DIAMETERS+0.8344 TO 0.8407 INCHES IN
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
NOMINAL THREAD SIZE0.875 INCHES IN
THREAD QUANTITY PER INCH16
THREAD SERIESUN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM-A582-TY416 ASSN STD ALL MATERIAL RESPONSES OVERALL
MATERIALSTEEL CORROSION RESISTING OVERALL
END ITEM IDENTIFICATIONUSED ON NIMITZ CLASS CVN
NUT HEIGHT0.175 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
20158Interchangeable
interchangeable cross-reference
interchangeable
2410 1-29/32Interchangeable
interchangeable cross-reference
interchangeable
110 1-29/32Interchangeable
interchangeable cross-reference
interchangeable
10122Interchangeable
interchangeable cross-reference
interchangeable
GGG-D-751 TYBCL2Interchangeable
interchangeable cross-reference
interchangeable
B94.11MInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20158-40?
20158-40 is a NUT,PLAIN,HEXAGON.
What parts can replace 20158-40?
There are 15 known substitutes for 20158-40: 20158, 2410 1-29/32, 110 1-29/32 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20158-40?
20158-40 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-469-7225. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026