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ASME B18.16.6 — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

ASME B18.16.6: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL AND ZINC OVERALL, nut_style: HEXAGONHEXAGON, nut_height: 0.198 INCHES NOMINAL0.198 INCHES NOMINAL IN, thread_class: 2B2B, thread_series: UNIFIED NATIONAL COARSE (UNC)UNIFIED NATIONAL COARSE (UNC), hardness_rating: 24.0 ROCKWELL C MINIMUM AND 24.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM32.0 ROCKWELL C MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-705-8857, 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
ASME B18.16.6
NSN: 5310-01-705-8857
FSC: 5310 — Nuts and Washers
CAGE: 05047 — THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS (USA)
SPECIFICATIONS
materialSTEEL AND ZINC OVERALL
nut_styleHEXAGONHEXAGON
nut_height0.198 INCHES NOMINAL0.198 INCHES NOMINAL IN
thread_class2B2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)UNIFIED NATIONAL COARSE (UNC)
hardness_rating24.0 ROCKWELL C MINIMUM AND 24.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM32.0 ROCKWELL C MAXIMUM
locking_featurePREVAILING TORQUE ALL METAL DESIGNPREVAILING TORQUE ALL METAL DESIGN
special_featuresPREVAILING TORQUE HEX NUT,UNC,GRADE C,STEEL/ZINC MATERIAL WITH YELLOW PASSIVATEPREVAILING TORQUE HEX NUT,UNC,GRADE C,STEEL/ZINC MATERIAL WITH YELLOW PASSIVATE
thread_directionRIGHT-HANDRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.375 INCHES0.375 INCHES IN
hole_configuration_styleCONFIGURATION CCONFIGURATION C
NSN5310-01-705-8857
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: ASME B18.16.6 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASME B18.16.6 NATIONAL STD SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)UNIFIED NATIONAL COARSE (UNC)
•
HARDNESS RATING: 24.0 ROCKWELL C MINIMUM AND 24.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM32.0 ROCKWELL C MAXIMUM
•
HOLE CONFIGURATION STYLE: CONFIGURATION CCONFIGURATION C
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASME B18.16.6 NATIONAL STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HANDRIGHT-HAND
•
NOMINAL THREAD SIZE: 0.375 INCHES0.375 INCHES IN
•
LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGNPREVAILING TORQUE ALL METAL DESIGN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASME B18.16.6 NATIONAL STD SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)UNIFIED NATIONAL COARSE (UNC)
HARDNESS RATING24.0 ROCKWELL C MINIMUM AND 24.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM32.0 ROCKWELL C MAXIMUM
HOLE CONFIGURATION STYLECONFIGURATION CCONFIGURATION C
MATERIAL DOCUMENT AND CLASSIFICATIONASME B18.16.6 NATIONAL STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HANDRIGHT-HAND
NOMINAL THREAD SIZE0.375 INCHES0.375 INCHES IN
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGNPREVAILING TORQUE ALL METAL DESIGN
NUT HEIGHT0.198 INCHES NOMINAL0.198 INCHES NOMINAL IN
SPECIAL FEATURESPREVAILING TORQUE HEX NUT,UNC,GRADE C,STEEL/ZINC MATERIAL WITH YELLOW PASSIVATEPREVAILING TORQUE HEX NUT,UNC,GRADE C,STEEL/ZINC MATERIAL WITH YELLOW PASSIVATE
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 1
54315-000Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ASME B18.16.6?
ASME B18.16.6 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace ASME B18.16.6?
There is 1 known substitute for ASME B18.16.6: 54315-000. Substitute compatibility should be verified for your specific system.
What is the NSN for ASME B18.16.6?
ASME B18.16.6 is cataloged in the U.S. Government catalog under NSN 5310-01-705-8857. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.