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Technical Data Sheet
42N3E048 ✓ 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,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON LOCKING INSERT, nut_style: HEXAGON, nut_height: 0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN, temp_rating: 350.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-113-4169, 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
42N3E048
NSN: 5310-00-113-4169
FSC: 5310
CAGE: 019L2 — ESNA, LLC (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON LOCKING INSERT
nut_styleHEXAGON
nut_height0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
temp_rating350.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNF
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
surface_treatmentCADMIUM NUT
width_across_flats0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
nominal_thread_size0.250 INCHES IN
bearing_surface_typeFLAT OR CHAMFERED
NSN5310-00-113-4169
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 42N3E048 · 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
BEARING SURFACE TYPE: FLAT OR CHAMFERED
NOMINAL THREAD SIZE: 0.250 INCHES IN
MATERIAL: STEEL COMP 1118 NUT
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE NUT
NUT STYLE: HEXAGON
SURFACE TREATMENT: CADMIUM NUT
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
BEARING SURFACE TYPEFLAT OR CHAMFERED
NOMINAL THREAD SIZE0.250 INCHES IN
MATERIALSTEEL COMP 1118 NUT
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE NUT
NUT STYLEHEXAGON
SURFACE TREATMENTCADMIUM NUT
THREAD DIRECTIONRIGHT-HAND
MATERIALPLASTIC POLYAMIDE NYLON LOCKING INSERT
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
WIDTH ACROSS FLATS0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
MS21044N4Interchangeable
interchangeable cross-reference
interchangeable
F52NE048Interchangeable
interchangeable cross-reference
interchangeable
2332351-N14Interchangeable
interchangeable cross-reference
interchangeable
306700-2Interchangeable
Same NIIN cross-reference
interchangeable
870125-00Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 42N3E048?
42N3E048 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 42N3E048?
There are 5 known substitutes for 42N3E048: MS21044N4, F52NE048, 2332351-N14 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 42N3E048?
42N3E048 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-113-4169. This indicates validated use in U.S. government and defense supply chains.
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