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500018-SS-12 — NUT,SELF-LOCKING,ROUND

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

500018-SS-12: NUT,SELF-LOCKING,ROUND.

The NUT,SELF-LOCKING,ROUND is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: ROUND, nut_diameter: 0.531 INCHES NOMINAL IN, nut_thickness: 0.093 INCHES NOMINAL IN, thread_series: UNF, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-574-5387, 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
500018-SS-12
NSN: 5310-01-574-5387
FSC: 5310 — Nuts and Washers
CAGE: 51506 — ACCURATE SCREW MACHINE CORP DIV ACCURATE SCREW MACHINE CORPORATION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleROUND
nut_diameter0.531 INCHES NOMINAL IN
nut_thickness0.093 INCHES NOMINAL IN
thread_seriesUNF
thread_directionRIGHT-HAND
width_across_flats0.433 INCHES NOMINAL IN
nominal_thread_size0.190 INCHES IN
end_item_identificationAN/BLQ-10A (V) 4 SYSTEM FY06 PN77C 73370G001 A
part_name_assigned_by_controlling_agencyRETAINER NUT
NSN5310-01-574-5387
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 500018-SS-12 · 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
•
WIDTH ACROSS FLATS: 0.433 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.190 INCHES IN
•
NUT DIAMETER: 0.531 INCHES NOMINAL IN
•
NUT THICKNESS: 0.093 INCHES NOMINAL IN
•
NUT STYLE: ROUND
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.433 INCHES NOMINAL IN
THREAD SERIESUNF
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.190 INCHES IN
NUT DIAMETER0.531 INCHES NOMINAL IN
NUT THICKNESS0.093 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYRETAINER NUT
NUT STYLEROUND
END ITEM IDENTIFICATIONAN/BLQ-10A (V) 4 SYSTEM FY06 PN77C 73370G001 A
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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 500018-SS-12?
500018-SS-12 is a NUT,SELF-LOCKING,ROUND.
What is the NSN for 500018-SS-12?
500018-SS-12 is cataloged in the U.S. Government catalog under NSN 5310-01-574-5387. 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.