PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 72-6971-303
72-6971-303 ✓ 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: STEEL OVERALL, nut_style: ROUND, nut_diameter: 1.125 INCHES NOMINAL IN, nut_thickness: 0.344 INCHES NOMINAL IN, thread_series: UNS, 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 5310-00-185-6484, 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
72-6971-303
NSN: 5310-00-185-6484
FSC: 5310
CAGE: 7PZX0 — FAIRBANKS MORSE, LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleROUND
nut_diameter1.125 INCHES NOMINAL IN
nut_thickness0.344 INCHES NOMINAL IN
thread_seriesUNS
thread_directionRIGHT-HAND
drive_point_depth0.094 INCHES NOMINAL IN
drive_point_width0.125 INCHES NOMINAL IN
nominal_thread_size0.664 INCHES IN
drive_point_quantity4
thread_pitch_diameters+0.6437 TO 0.6467 INCHES IN
thread_quantity_per_inch32
NSN5310-00-185-6484
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 72-6971-303 · 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
•
NUT DIAMETER: 1.125 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD PITCH DIAMETERS: +0.6437 TO 0.6467 INCHES IN
•
THREAD SERIES: UNS
•
NOMINAL THREAD SIZE: 0.664 INCHES IN
•
THREAD QUANTITY PER INCH: 32
•
DRIVE POINT DEPTH: 0.094 INCHES NOMINAL IN
•
DRIVE POINT QUANTITY: 4
TECHNICAL CHARACTERISTICS (FLIS)
NUT DIAMETER1.125 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
THREAD PITCH DIAMETERS+0.6437 TO 0.6467 INCHES IN
THREAD SERIESUNS
NOMINAL THREAD SIZE0.664 INCHES IN
THREAD QUANTITY PER INCH32
DRIVE POINT DEPTH0.094 INCHES NOMINAL IN
DRIVE POINT QUANTITY4
MATERIALSTEEL OVERALL
NUT THICKNESS0.344 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
73044Interchangeable
interchangeable cross-reference
interchangeable
654132Interchangeable
interchangeable cross-reference
interchangeable
573324R91Interchangeable
interchangeable cross-reference
interchangeable
A308121AInterchangeable
interchangeable cross-reference
interchangeable
N03Interchangeable
interchangeable cross-reference
interchangeable
48185-351-00-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 72-6971-303?
72-6971-303 is a NUT,PLAIN,ROUND.
What parts can replace 72-6971-303?
There are 26 known substitutes for 72-6971-303: 73044, 654132, 573324R91 and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 72-6971-303?
72-6971-303 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-185-6484. 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