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03A103-6L — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

03A103-6L: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: SPLINE DRIVE, lubrication: DRY FILM LUBRICANT, temp_rating: 900.0 FAHRENHEIT MAXIMUM DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF). This part is cataloged in the U.S.

Government catalog under NSN 5310-01-351-2861, 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
03A103-6L
NSN: 5310-01-351-2861
FSC: 5310 — Nuts and Washers
CAGE: 14153 — DEFENSE LOGISTICS AGENCY DBA DEFENSE SUPPLY CENTER PHILADELPHIA (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
nut_styleSPLINE DRIVE
lubricationDRY FILM LUBRICANT
temp_rating900.0 FAHRENHEIT MAXIMUM DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
overall_height0.405 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
washer_thickness0.045 INCHES MINIMUM IN
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.375 INCHES IN
NSN5310-01-351-2861
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 03A103-6L · 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
•
LUBRICATION: DRY FILM LUBRICANT
•
WASHER OUTSIDE DIAMETER: 0.659 INCHES MINIMUM AND 0.669 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
TEMP RATING: 900.0 FAHRENHEIT MAXIMUM DEGF
•
WASHER THICKNESS: 0.045 INCHES MINIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
LUBRICATIONDRY FILM LUBRICANT
OVERALL HEIGHT0.405 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER0.659 INCHES MINIMUM AND 0.669 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
TEMP RATING900.0 FAHRENHEIT MAXIMUM DEGF
WASHER THICKNESS0.045 INCHES MINIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.375 INCHES IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 3
SP52988-6DLSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
83673-6LSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
VN3201BE064Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 03A103-6L?
03A103-6L is a NUT,SELF-LOCKING,EXTENDED WASHER.
What parts can replace 03A103-6L?
There are 3 known substitutes for 03A103-6L: SP52988-6DL, 83673-6L, VN3201BE064. Substitute compatibility should be verified for your specific system.
What is the NSN for 03A103-6L?
03A103-6L is cataloged in the U.S. Government catalog under NSN 5310-01-351-2861. This indicates validated use in U.S. government and defense supply chains.
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