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94831A031 — NUT,PLAIN,EXTENDED WASHER,HEXAGO

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

94831A031: NUT,PLAIN,EXTENDED WASHER,HEXAGO.

NUT,PLAIN,EXTENDED WASHER,HEXAGO. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), overall_height: 0.344 INCHES NOMINAL IN, special_features: MATERIAL GRADE 2 STEEL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-589-9667, 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
94831A031
NSN: 5310-01-589-9667
FSC: 5310 — Nuts and Washers
CAGE: 2V507 — MCMASTER-CARR SUPPLY COMPANY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
overall_height0.344 INCHES NOMINAL IN
special_featuresMATERIAL GRADE 2 STEEL
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
width_across_flats0.562 INCHES NOMINAL IN
nominal_thread_size0.375 INCHES IN
washer_outside_diameter0.750 INCHES NOMINAL IN
thread_quantity_per_inch16
NSN5310-01-589-9667
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 94831A031 · 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
•
WASHER OUTSIDE DIAMETER: 0.750 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 0.562 INCHES NOMINAL IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
SURFACE TREATMENT: ZINC OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.344 INCHES NOMINAL IN
WASHER OUTSIDE DIAMETER0.750 INCHES NOMINAL IN
WIDTH ACROSS FLATS0.562 INCHES NOMINAL IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.375 INCHES IN
SPECIAL FEATURESMATERIAL GRADE 2 STEEL
SURFACE TREATMENTZINC OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYSERRATED FLANGE HEX LOCKNUT
NUT STYLEHEXAGON
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

No substitute or cross-reference records for this part.

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 94831A031?
94831A031 is a NUT,PLAIN,EXTENDED WASHER,HEXAGO.
What is the NSN for 94831A031?
94831A031 is cataloged in the U.S. Government catalog under NSN 5310-01-589-9667. 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.