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A103AT ✓ 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 OVERALL, nut_style: HEXAGON, nut_height: 0.057 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-369-6158, 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
A103AT
NSN: 5310-00-369-6158
FSC: 5310
CAGE: K4975 — UFC AEROSPACE EUROPE LIMITED (GBR)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.057 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_across_flats0.180 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
nominal_thread_size0.086 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch56
nondefinitive_spec/std_data2 TYPE AND 13 STYLE
NSN5310-00-369-6158
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A103AT · 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
•
NOMINAL THREAD SIZE: 0.112 INCHES IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD QUANTITY PER INCH: 40
•
WIDTH ACROSS FLATS: 0.183 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
•
NUT HEIGHT: 0.063 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
•
NUT STYLE: HEXAGON
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.112 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH40
WIDTH ACROSS FLATS0.183 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
NUT HEIGHT0.063 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
NUT STYLEHEXAGON
THREAD CLASS2B
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
1019004-022Interchangeable
interchangeable cross-reference
interchangeable
A103ATInterchangeable
interchangeable cross-reference
interchangeable
5310009349738Interchangeable
interchangeable cross-reference
interchangeable
10121325Interchangeable
Same NIIN cross-reference
interchangeable
30-297-631-03Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A103AT?
A103AT is a NUT,PLAIN,HEXAGON.
What parts can replace A103AT?
There are 5 known substitutes for A103AT: 1019004-022, A103AT, 5310009349738 and 2 more. Substitute compatibility should be verified for your specific system.
Is A103AT still available?
A103AT is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026