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391-2167 — NUT,PLAIN,EXTENDED WASHER,HEXAGO

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

391-2167: NUT,PLAIN,EXTENDED WASHER,HEXAGO.

NUT,PLAIN,EXTENDED WASHER,HEXAGO. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: HEXAGON, thread_direction: RIGHT-HAND, nominal_thread_size: 0.375 INCHES IN, washer_outside_diameter: 0.75 INCHES NOMINAL IN, thread_quantity_per_inch: 16. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-724-4995, 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
391-2167
NSN: 5310-01-724-4995
FSC: 5310 — Nuts and Washers
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleHEXAGON
thread_directionRIGHT-HAND
nominal_thread_size0.375 INCHES IN
washer_outside_diameter0.75 INCHES NOMINAL IN
thread_quantity_per_inch16
part_name_assigned_by_controlling_agencyHEX FLANGE NUT
NSN5310-01-724-4995
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 391-2167 · 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: 0.75 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
NUT STYLE: HEXAGON
•
THREAD QUANTITY PER INCH: 16
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
TECHNICAL CHARACTERISTICS
WASHER OUTSIDE DIAMETER0.75 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.375 INCHES IN
PART NAME ASSIGNED BY CONTROLLING AGENCYHEX FLANGE NUT
NUT STYLEHEXAGON
THREAD QUANTITY PER INCH16
MATERIALSTEEL CORROSION RESISTING OVERALL
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 391-2167?
391-2167 is a NUT,PLAIN,EXTENDED WASHER,HEXAGO.
What is the NSN for 391-2167?
391-2167 is cataloged in the U.S. Government catalog under NSN 5310-01-724-4995. 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.