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PartsTable / COMPONENT / SL231-3-1-281
SL231-3-1-281 ✓ 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,SHEET SPRING is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: SHEET SPRING, nut_width: 0.380 INCHES MAXIMUM IN, nut_length: 0.680 INCHES NOMINAL IN, panel_thickness: 0.105 INCHES NOMINAL IN, special_features: SELF-LOCKING FEATURE INCLUDED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-003-9407, 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
SL231-3-1-281
NSN: 5310-00-003-9407
FSC: 5310
CAGE: 97393 — SPS TECHNOLOGIES LLC DBA SHUR-LOK COMPANY DIV AEROSPACE ENGINEERED PRODUCTS DIVISION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleSHEET SPRING
nut_width0.380 INCHES MAXIMUM IN
nut_length0.680 INCHES NOMINAL IN
panel_thickness0.105 INCHES NOMINAL IN
special_featuresSELF-LOCKING FEATURE INCLUDED
surface_treatmentCADMIUM OVERALL
material_thickness0.020 INCHES NOMINAL IN
mating_member_diameter_accommodated0.190 INCHES NOMINAL IN
surface_treatment_document_and_classificationQQ-P-416,TYPE 1,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OR QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-003-9407
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SL231-3-1-281 · 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 WIDTH: 0.380 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE 1,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OR QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
NUT STYLE: SHEET SPRING
•
MATERIAL: STEEL OVERALL
•
MATERIAL THICKNESS: 0.020 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MATING MEMBER DIAMETER ACCOMMODATED: 0.190 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
NUT WIDTH0.380 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 1,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OR QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SPECIAL FEATURESSELF-LOCKING FEATURE INCLUDED
NUT STYLESHEET SPRING
MATERIALSTEEL OVERALL
MATERIAL THICKNESS0.020 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OVERALL
MATING MEMBER DIAMETER ACCOMMODATED0.190 INCHES NOMINAL IN
PANEL THICKNESS0.105 INCHES NOMINAL IN
NUT LENGTH0.680 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
457-6031Interchangeable
interchangeable cross-reference
interchangeable
971003-221Interchangeable
interchangeable cross-reference
interchangeable
N8480Interchangeable
interchangeable cross-reference
interchangeable
350119Interchangeable
interchangeable cross-reference
interchangeable
131000-002Interchangeable
interchangeable cross-reference
interchangeable
3100000-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SL231-3-1-281?
SL231-3-1-281 is a NUT,SHEET SPRING.
What parts can replace SL231-3-1-281?
There are 13 known substitutes for SL231-3-1-281: 457-6031, 971003-221, N8480 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SL231-3-1-281?
SL231-3-1-281 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-003-9407. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026