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JH30-41 ✓ 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 LOCKNUT,ELECTRICAL CONDUIT is a the manufacturer industrial component. Key specifications include material: IRON MALLEABLE OR STEEL, drive_type: SPANNER, thread_size: 2-11-1/2, thread_type: STRAIGHT, first_end_style: SQUARE, outside_diameter: 2.950 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-487-5374, 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
JH30-41
NSN: 5315-00-487-5374
FSC: 5315
CAGE: 86887 — SIGMA TEK, INC. (USA)
SPECIFICATIONS
materialIRON MALLEABLE OR STEEL
drive_typeSPANNER
thread_size2-11-1/2
thread_typeSTRAIGHT
first_end_styleSQUARE
outside_diameter2.950 INCHES NOMINAL IN
overall_thickness0.140 INCHES NOMINAL IN
surface_treatmentCADMIUM OR ZINC
pin_overall_length1.500 INCHES NOMINAL IN
pin_overall_diameter0.0639 INCHES MINIMUM AND 0.0646 INCHES MAXIMUM IN
conduit_size_accommodated2.000 INCHES NOMINAL IN
nondefinitive_spec/std_data1 CLASS AND P KIND AND 3 TYPE
NSN5315-00-487-5374
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: JH30-41 · 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
•
PIN OVERALL LENGTH: 1.500 INCHES NOMINAL IN
•
MATERIAL: NICKEL ALLOY 400 OVERALL
•
PIN OVERALL DIAMETER: 0.0639 INCHES MINIMUM AND 0.0646 INCHES MAXIMUM IN
•
FIRST END STYLE: SQUARE
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
TECHNICAL CHARACTERISTICS (FLIS)
PIN OVERALL LENGTH1.500 INCHES NOMINAL IN
MATERIALNICKEL ALLOY 400 OVERALL
PIN OVERALL DIAMETER0.0639 INCHES MINIMUM AND 0.0646 INCHES MAXIMUM IN
FIRST END STYLESQUARE
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
1-200Interchangeable
interchangeable cross-reference
interchangeable
156Interchangeable
interchangeable cross-reference
interchangeable
16Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is JH30-41?
JH30-41 is a LOCKNUT,ELECTRICAL CONDUIT.
What parts can replace JH30-41?
There are 3 known substitutes for JH30-41: 1-200, 156, 16. Substitute compatibility should be verified for your specific system.
What is the NSN for JH30-41?
JH30-41 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-487-5374. 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