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9984M59P05 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

9984M59P05: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include nut_style: DOUBLE HEXAGON, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.630 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN, thread_direction: RIGHT-HAND, washer_thickness: 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-182-6613, 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
9984M59P05
NSN: 5310-01-182-6613
FSC: 5310 — Nuts and Washers
CAGE: 06710 — VALLEY-TODECO, INC. DBA ARCONIC FASTENING SYSTEMS (USA)
SPECIFICATIONS
nut_styleDOUBLE HEXAGON
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
overall_height0.630 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN
special_featuresSPECIAL FEATURES USED TO SECURE- CLAMPS & BRACKETS OF ENGINE&EXPOSED TOEXTREME HEAT F118 ENGINE QUALIFIED; DRY FILM LUBRICANT
thread_directionRIGHT-HAND
washer_thickness0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
width_across_flats0.500 INCHES NOMINAL IN
nominal_thread_size0.375 INCHES IN
thread_quantity_per_inch24
criticality_code_justificationFEAT
material_document_and_classificationGEN.ELEC.B50TF15 CL-B MFR REF SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-182-6613
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 9984M59P05 · 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: 0.500 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: GEN.ELEC.-50TF19 CL-D MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
CRITICALITY CODE JUSTIFICATION: FEAT
•
WASHER THICKNESS: 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: GEN.ELEC.B50TF15 CL-B MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.630 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.500 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONGEN.ELEC.-50TF19 CL-D MFR REF SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
CRITICALITY CODE JUSTIFICATIONFEAT
WASHER THICKNESS0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONGEN.ELEC.B50TF15 CL-B MFR REF SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.375 INCHES IN
SPECIAL FEATURESSPECIAL FEATURES USED TO SECURE- CLAMPS & BRACKETS OF ENGINE&EXPOSED TOEXTREME HEAT F118 ENGINE QUALIFIED; DRY FILM LUBRICANT
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 5
998459O05Reference document
Same NSN cross-reference
Reference document — Secondary reference
9984M59P01Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
VN735YB064Reference document
Same NSN cross-reference
Reference document — Secondary reference
BA17030-01Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
9984M59P03Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 9984M59P05?
9984M59P05 is a NUT,SELF-LOCKING,EXTENDED WASHER.
What parts can replace 9984M59P05?
There are 5 known substitutes for 9984M59P05: 998459O05, 9984M59P01, VN735YB064 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 9984M59P05?
9984M59P05 is cataloged in the U.S. Government catalog under NSN 5310-01-182-6613. 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.