PartsTable
Technical Data Sheet
A10377 ✓ 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,SLOTTED,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1117 OVERALL, nut_style: SLOTTED, HEXAGON, nut_height: 0.256 INCHES MINIMUM AND 0.276 INCHES MAXIMUM IN, thread_class: 3B, 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 5310-00-500-9267, 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
A10377
NSN: 5310-00-500-9267
FSC: 5310
CAGE: U4574 — FNH UK LTD (GBR)
SPECIFICATIONS
materialSTEEL COMP 1117 OVERALL
nut_styleSLOTTED, HEXAGON
nut_height0.256 INCHES MINIMUM AND 0.276 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNS
thread_directionRIGHT-HAND
surface_treatmentPHOSPHATE OVERALL
width_across_flats0.684 INCHES MINIMUM AND 0.689 INCHES MAXIMUM IN
nominal_thread_size0.437 INCHES IN
bearing_surface_typeCHAMFERED OR WASHER FACED
bearing_surface_finish125.0 MICROINCHES
thread_quantity_per_inch24
NSN5310-00-500-9267
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A10377 · 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 CLASS: 3B
BEARING SURFACE FINISH: 125.0 MICROINCHES
NOMINAL THREAD SIZE: 0.437 INCHES IN
THREAD SERIES: UNS
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
THREAD QUANTITY PER INCH: 24
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT: PHOSPHATE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3B
BEARING SURFACE FINISH125.0 MICROINCHES
NOMINAL THREAD SIZE0.437 INCHES IN
THREAD SERIESUNS
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
THREAD QUANTITY PER INCH24
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTPHOSPHATE OVERALL
NUT STYLESLOTTED, HEXAGON
NUT HEIGHT0.256 INCHES MINIMUM AND 0.276 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
256-100006-001Interchangeable
interchangeable cross-reference
interchangeable
103-77Interchangeable
interchangeable cross-reference
interchangeable
SM-B-187571Interchangeable
interchangeable cross-reference
interchangeable
700-BR200A1Interchangeable
interchangeable cross-reference
interchangeable
10110Interchangeable
interchangeable cross-reference
interchangeable
01-0101-0377Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A10377?
A10377 is a NUT,PLAIN,SLOTTED,HEXAGON.
What parts can replace A10377?
There are 14 known substitutes for A10377: 256-100006-001, 103-77, SM-B-187571 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A10377?
A10377 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-500-9267. This indicates validated use in U.S. government and defense supply chains.
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