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Technical Data Sheet

FSU/MD-1801PF — NUT ASSEMBLY,RETAINER PLATE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

FSU/MD-1801PF: NUT ASSEMBLY,RETAINER PLATE.

The NUT ASSEMBLY,RETAINER PLATE is a the manufacturer industrial component. Key specifications include material: STEEL NUT, nut_style: PLATE, lubrication: DRY FILM LUBRICANT, thread_class: 3B, thread_series: UNJC, mounting_style: PLATE. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-690-1303, 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
FSU/MD-1801PF
NSN: 5310-01-690-1303
FSC: 5310 — Nuts and Washers
CAGE: 04967 — FASTENER SPECIALTY, INC. (USA)
SPECIFICATIONS
materialSTEEL NUT
nut_stylePLATE
lubricationDRY FILM LUBRICANT
nut_quantity4
thread_class3B
thread_seriesUNJC
mounting_stylePLATE
overall_height1.348 INCHES NOMINAL IN
overall_length1.348 INCHES NOMINAL IN
inside_diameter1.185 INCHES NOMINAL IN
flange_thickness0.106 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
NSN5310-01-690-1303
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: FSU/MD-1801PF · 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
•
LUBRICATION: DRY FILM LUBRICANT
•
CENTER TO CENTER NUT SPACING ALONG LENGTH: 1.062 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.106 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
•
THREAD SERIES: UNJC
•
NUT QUANTITY: 4
•
MOUNTING STYLE: PLATE
TECHNICAL CHARACTERISTICS
LUBRICATIONDRY FILM LUBRICANT
OVERALL HEIGHT1.348 INCHES NOMINAL IN
CENTER TO CENTER NUT SPACING ALONG LENGTH1.062 INCHES NOMINAL IN
FLANGE THICKNESS0.106 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
THREAD SERIESUNJC
NUT QUANTITY4
MOUNTING STYLEPLATE
OVERALL LENGTH1.348 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
INSIDE DIAMETER1.185 INCHES NOMINAL IN
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 FSU/MD-1801PF?
FSU/MD-1801PF is a NUT ASSEMBLY,RETAINER PLATE.
What is the NSN for FSU/MD-1801PF?
FSU/MD-1801PF is cataloged in the U.S. Government catalog under NSN 5310-01-690-1303. 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.