PartsTable
Technical Data Sheet
BN2 ✓ 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,ROUND is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 360 OVERALL, nut_style: ROUND, nut_diameter: 0.233 INCHES MINIMUM AND 0.236 INCHES MAXIMUM IN, thread_class: 2B, nut_thickness: 0.375 INCHES NOMINAL IN, thread_series: UNIFIED NATIONAL COARSE (UNC). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-690-4298, 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
BN2
NSN: 5310-00-690-4298
FSC: 5310
CAGE: 9R803 — MARCO MANUFACTURING CO INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY 360 OVERALL
nut_styleROUND
nut_diameter0.233 INCHES MINIMUM AND 0.236 INCHES MAXIMUM IN
thread_class2B
nut_thickness0.375 INCHES NOMINAL IN
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
drive_point_depth0.060 INCHES NOMINAL IN
drive_point_width0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
nominal_thread_size0.138 INCHES IN
counterbore_diameter0.140 INCHES MINIMUM AND 0.146 INCHES MAXIMUM NUT IN
drive_point_quantity2
NSN5310-00-690-4298
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: BN2 · 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 QUANTITY PER INCH: 32
COUNTERBORE DIAMETER: 0.140 INCHES MINIMUM AND 0.146 INCHES MAXIMUM NUT IN
MATERIAL: COPPER ALLOY 360 OVERALL
NUT COUNTERBORE DEPTH: 0.062 INCHES NOMINAL NUT IN
NUT THICKNESS: 0.375 INCHES NOMINAL IN
NUT STYLE: ROUND
DRIVE POINT WIDTH: 0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
NUT DIAMETER: 0.233 INCHES MINIMUM AND 0.236 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH32
COUNTERBORE DIAMETER0.140 INCHES MINIMUM AND 0.146 INCHES MAXIMUM NUT IN
MATERIALCOPPER ALLOY 360 OVERALL
NUT COUNTERBORE DEPTH0.062 INCHES NOMINAL NUT IN
NUT THICKNESS0.375 INCHES NOMINAL IN
NUT STYLEROUND
DRIVE POINT WIDTH0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
NUT DIAMETER0.233 INCHES MINIMUM AND 0.236 INCHES MAXIMUM IN
DRIVE POINT DEPTH0.060 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
72159Interchangeable
interchangeable cross-reference
interchangeable
A72159Interchangeable
interchangeable cross-reference
interchangeable
559-1561-111Interchangeable
interchangeable cross-reference
interchangeable
N400-512-125Interchangeable
interchangeable cross-reference
interchangeable
1227Interchangeable
interchangeable cross-reference
interchangeable
990C776H12Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BN2?
BN2 is a NUT,PLAIN,ROUND.
What parts can replace BN2?
There are 14 known substitutes for BN2: 72159, A72159, 559-1561-111 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BN2?
BN2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-690-4298. This indicates validated use in U.S. government and defense supply chains.
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