PartsTable
Technical Data Sheet
SK1405 ✓ 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: COPPER ALLOY OVERALL, nut_style: HEXAGON, nut_height: 0.063 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), 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 5310-01-218-2311, 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
SK1405
NSN: 5310-01-218-2311
FSC: 5310
CAGE: 28198 — POSITRONIC INDUSTRIES INC DIV AMPHENOL MILITARY AEROSPACE OPERATIONS (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleHEXAGON
nut_height0.063 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
width_across_flats0.188 INCHES NOMINAL IN
nominal_thread_size0.112 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch40
NSN5310-01-218-2311
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SK1405 · 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: CHAMFERED
THREAD QUANTITY PER INCH: 40
NOMINAL THREAD SIZE: 0.112 INCHES IN
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
THREAD CLASS: 2B
NUT HEIGHT: 0.063 INCHES NOMINAL IN
MATERIAL: COPPER ALLOY OVERALL
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
BEARING SURFACE TYPECHAMFERED
THREAD QUANTITY PER INCH40
NOMINAL THREAD SIZE0.112 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD CLASS2B
NUT HEIGHT0.063 INCHES NOMINAL IN
MATERIALCOPPER ALLOY OVERALL
THREAD DIRECTIONRIGHT-HAND
NUT STYLEHEXAGON
WIDTH ACROSS FLATS0.188 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
100900Interchangeable
interchangeable cross-reference
interchangeable
MILM36755Interchangeable
interchangeable cross-reference
interchangeable
37AInterchangeable
interchangeable cross-reference
interchangeable
159-2601Interchangeable
interchangeable cross-reference
interchangeable
501-0008Interchangeable
interchangeable cross-reference
interchangeable
08TGSM513Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SK1405?
SK1405 is a NUT,PLAIN,HEXAGON.
What parts can replace SK1405?
There are 9 known substitutes for SK1405: 100900, MILM36755, 37A and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SK1405?
SK1405 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-218-2311. This indicates validated use in U.S. government and defense supply chains.
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