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11FM25AX5-16-18 — NUT,PLAIN,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

11FM25AX5-16-18: NUT,PLAIN,HEXAGON.

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thread_series: UNIFIED NATIONAL COARSE (UNC), surface_treatment: CADMIUM OR ZINC OVERALL, width_across_flats: 0.594 INCHES NOMINAL IN, nominal_thread_size: 0.312 INCHES IN, bearing_surface_type: WASHER FACED. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-017-4853, 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
11FM25AX5-16-18
NSN: 5310-00-017-4853
FSC: 5310 — Nuts and Washers
CAGE: 7PZX0 — FAIRBANKS MORSE, LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thread_seriesUNIFIED NATIONAL COARSE (UNC)
surface_treatmentCADMIUM OR ZINC OVERALL
width_across_flats0.594 INCHES NOMINAL IN
nominal_thread_size0.312 INCHES IN
bearing_surface_typeWASHER FACED
thread_quantity_per_inch18
material_document_and_classificationQQ-S-633 GRADE,A/A,CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-017-4853
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 11FM25AX5-16-18 · 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: 0.594 INCHES NOMINAL IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633 GRADE,A/A,CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD SIZE: 0.312 INCHES IN
•
SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
•
THREAD QUANTITY PER INCH: 18
•
MATERIAL: STEEL OVERALL
•
BEARING SURFACE TYPE: WASHER FACED
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.594 INCHES NOMINAL IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633 GRADE,A/A,CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD SIZE0.312 INCHES IN
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
THREAD QUANTITY PER INCH18
MATERIALSTEEL OVERALL
BEARING SURFACE TYPEWASHER FACED
SUBSTITUTES & CROSS-REFERENCES 3
MAFB241BPC46Reference document
Same NSN cross-reference
Reference document — Secondary reference
174853Reference document
Same NSN cross-reference
Reference document — Secondary reference
N11311NReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 11FM25AX5-16-18?
11FM25AX5-16-18 is a NUT,PLAIN,HEXAGON.
What parts can replace 11FM25AX5-16-18?
There are 3 known substitutes for 11FM25AX5-16-18: MAFB241BPC46, 174853, N11311N. Substitute compatibility should be verified for your specific system.
What is the NSN for 11FM25AX5-16-18?
11FM25AX5-16-18 is cataloged in the U.S. Government catalog under NSN 5310-00-017-4853. 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.