PartsTable
Technical Data Sheet
AN121507 ✓ 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,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8740 OVERALL, nut_style: HEXAGON, nut_height: 0.474 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN, thread_class: 3B, thread_series: UNF, hardness_rating: 19.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MAXIMUM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-268-6038, 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
AN121507
NSN: 5310-00-268-6038
FSC: 5310
CAGE: 81352 — AIR FORCE-NAVY AERONAUTICAL SPECIFICATIONS PROMULGATED BY AERONAUTICAL STANDARDS GROUP
SPECIFICATIONS
materialSTEEL COMP 8740 OVERALL
nut_styleHEXAGON
nut_height0.474 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNF
hardness_rating19.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MAXIMUM
thread_directionRIGHT-HAND
countersink_angle85.0 DEGREES MINIMUM AND 95.0 DEGREES MAXIMUM NUT
surface_treatmentCADMIUM OVERALL
width_across_flats0.865 INCHES MINIMUM AND 0.877 INCHES MAXIMUM IN
nominal_thread_size0.562 INCHES IN
bearing_surface_typeWASHER FACED
NSN5310-00-268-6038
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: AN121507 · 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 DIRECTION: RIGHT-HAND
NUT HEIGHT: 0.474 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH: 18
HARDNESS RATING: 19.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MAXIMUM
THREAD SERIES: UNF
NOMINAL THREAD SIZE: 0.562 INCHES IN
MATERIAL: STEEL COMP 8740 OVERALL
WIDTH ACROSS FLATS: 0.865 INCHES MINIMUM AND 0.877 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
NUT HEIGHT0.474 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH18
HARDNESS RATING19.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MAXIMUM
THREAD SERIESUNF
NOMINAL THREAD SIZE0.562 INCHES IN
MATERIALSTEEL COMP 8740 OVERALL
WIDTH ACROSS FLATS0.865 INCHES MINIMUM AND 0.877 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2400 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
BEARING SURFACE FINISH63.0 MICROINCHES
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
5233140Interchangeable
interchangeable cross-reference
interchangeable
GPW1029Interchangeable
interchangeable cross-reference
interchangeable
25695Interchangeable
interchangeable cross-reference
interchangeable
H2410LInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN121507?
AN121507 is a NUT,PLAIN,HEXAGON.
What parts can replace AN121507?
There are 4 known substitutes for AN121507: 5233140, GPW1029, 25695 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AN121507?
AN121507 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-268-6038. This indicates validated use in U.S. government and defense supply chains.
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