PartsTable
Technical Data Sheet
7377756 ✓ 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

NUT,PLAIN,SINGLE BALL SEAT,HEXAG. Key specifications include material: STEEL COMP 1213 OVERALL, nut_style: SINGLE BALL SEAT, HEXAGON, nut_height: 0.470 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, ball_seat_radius: 0.224 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-737-7756, 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
7377756
NSN: 5310-00-737-7756
FSC: 5310
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 1213 OVERALL
nut_styleSINGLE BALL SEAT, HEXAGON
nut_height0.470 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
ball_seat_radius0.224 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentZINC AND DICHROMATE OVERALL
width_across_flats0.372 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
nominal_thread_size0.216 INCHES IN
thread_quantity_per_inch28
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-737-7756
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 7377756 · 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 STYLE: SINGLE BALL SEAT, HEXAGON
WIDTH ACROSS FLATS: 0.372 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
THREAD SERIES: UNF
NOMINAL THREAD SIZE: 0.216 INCHES IN
THREAD QUANTITY PER INCH: 28
THREAD DIRECTION: RIGHT-HAND
MATERIAL: STEEL COMP 1213 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLESINGLE BALL SEAT, HEXAGON
WIDTH ACROSS FLATS0.372 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
THREAD SERIESUNF
NOMINAL THREAD SIZE0.216 INCHES IN
THREAD QUANTITY PER INCH28
THREAD DIRECTIONRIGHT-HAND
MATERIALSTEEL COMP 1213 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NUT HEIGHT0.470 INCHES NOMINAL IN
SURFACE TREATMENTZINC AND DICHROMATE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
A10335Interchangeable
interchangeable cross-reference
interchangeable
310335000Interchangeable
interchangeable cross-reference
interchangeable
417JInterchangeable
interchangeable cross-reference
interchangeable
26C12Interchangeable
interchangeable cross-reference
interchangeable
11A8299Interchangeable
interchangeable cross-reference
interchangeable
10092523Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 7377756?
7377756 is a NUT,PLAIN,SINGLE BALL SEAT,HEXAG.
What parts can replace 7377756?
There are 10 known substitutes for 7377756: A10335, 310335000, 417J and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 7377756?
7377756 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-737-7756. This indicates validated use in U.S. government and defense supply chains.
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