PartsTable
Technical Data Sheet
12759-00965 ✓ 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: STEEL COMP 302 NUT, nut_style: HEXAGON, nut_height: 0.225 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, locking_feature: PREVAILING TORQUE ALL NONMETALLIC DESIGN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-583-5812, 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
12759-00965
NSN: 5310-01-583-5812
FSC: 5310
CAGE: 0Y3H3 — FASTENAL COMPANY DBA FASTENAL CO (USA)
SPECIFICATIONS
materialSTEEL COMP 302 NUT
nut_styleHEXAGON
nut_height0.225 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
locking_featurePREVAILING TORQUE ALL NONMETALLIC DESIGN
thread_directionRIGHT-HAND
width_across_flats0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
nominal_thread_size0.250 INCHES IN
bearing_surface_typeFLAT
end_item_identificationMRAP-RG-31; MRAP - M-ATV UI
thread_quantity_per_inch28
NSN5310-01-583-5812
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12759-00965 · 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 HEIGHT: 0.225 INCHES NOMINAL IN
MATERIAL: STEEL COMP 302 NUT
THREAD SERIES: UNF
THREAD QUANTITY PER INCH: 28
NOMINAL THREAD SIZE: 0.250 INCHES IN
BEARING SURFACE TYPE: FLAT
TECHNICAL CHARACTERISTICS (FLIS)
NUT HEIGHT0.225 INCHES NOMINAL IN
MATERIALSTEEL COMP 302 NUT
END ITEM IDENTIFICATIONMRAP-RG-31; MRAP - M-ATV UI
SPECIAL FEATURESNUT OVERALL HEIGHT WITH LOCKING INSERT IS 0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM; MATERIAL IS GRADE 18-8 STAINLESS STEEL; PREVAILING TORQUE DESIGN PER IFI 100/107, WITH A CLAMP LOAD OF 50 PERCENT OF GRADE A IN
THREAD SERIESUNF
THREAD QUANTITY PER INCH28
NOMINAL THREAD SIZE0.250 INCHES IN
BEARING SURFACE TYPEFLAT
MATERIALPLASTIC NYLON LOCKING INSERT
THREAD CLASS2B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
70880Interchangeable
interchangeable cross-reference
interchangeable
RR-C-271Interchangeable
interchangeable cross-reference
interchangeable
301708Interchangeable
interchangeable cross-reference
interchangeable
LD153-0010-0006Interchangeable
interchangeable cross-reference
interchangeable
401297Interchangeable
interchangeable cross-reference
interchangeable
26400Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12759-00965?
12759-00965 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 12759-00965?
There are 11 known substitutes for 12759-00965: 70880, RR-C-271, 301708 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12759-00965?
12759-00965 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-583-5812. This indicates validated use in U.S. government and defense supply chains.
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